I thought I would jot down a short thank you note to tell you how much I have appreciated your videos. Very rarely do you find someone who can communicate complex information in such a digestible manner. Delightfully delivered with an authority that leaves the viewer in no doubt we are listening to a master in their field. These videos are in a class of their own and I keep them in a special library. As a kid in the 1970s in the UK we had a BBC science journalist called James Burke and he was a very special communicator. I get the same excitement and connection with the subject material that I did all those years ago. Thank you very much Dan.
I was going to say the same thing -- this was a very clear explanation, and very soothing in style! There is definitely something great in the old BBC series -- and there was also another one "The Secret Life of machines with Tim Hunkin." It was a bit quirky and rustic, but also very calm and just pure genius in demonstrating how stuff works. If only we had more stuff like that!
@@martinda7446 Computer History Museum in Mountain View, California runs a marvelous project to preserve the heritage of semiconductor industry by interviewing people whose work contributed to it. And then they publish these lengthy, very detailed "Oral History" interviews, full of technical details, on their UA-cam channel. They also have a library of searchable transcripts on their website. Something like that needs to be done for other crafts. Dan has so much experience, so much to tell both about engineering and about life -- it would be a captivating tale for many people interested in technology and its real history -- with all the ups and downs that come with trying to create something new.
can't believe this, I was hoping for an upload for years , i enjoyed watching every single video in this channel thank you for your time and have a great day
Dan - I learn more from you in 45 minutes than I could from taking an entire 40-hour class. You have an amazing knack for distilling information down to the most critical and memorable elements, in an approachable way that someone who's merely curious about it with no experience can understand. I wish we could clone you and have access to your lifetime of lessons learned.
Check all other Dan's videos : you'll get 3 years of mechanical engineering M.Sc. level manufacturing courses in a handful of videos. Never so much used Pause button to take notes on a UA-cam video ever ! ;-)
I really appreciate the fact you included pricing for the printer, that kind of thing always seems to be a secret for most companies and it's difficult to get public figures.
Thing I love about this guy is his flat out honesty about being a partner in a sintering style 3D printer company. How many UA-cam creates do we watch that either flash name brand tools constantly throughout their videos, constantly name drop the brand name as if there is a minimum amount of times they have to drop the manufacturers name, flat out stop the video flow to introduce us to the sponsor of this video or (the ugliest and most disgusting types of all) flat out take over a channel and the creater becomes a salesman for the company and every video is either related to the product or the product placement throughout the video just wrecks that channel?? It'd be such a breath of fresh air if UA-cam creators would be that honest about sponsorship.
If you want to be a huge blessing to humanity, keep doing these videos regularly for the rest of your life to pass on your knowledge. Really. Thanks Dan!
@@dgelbart it's a trade of no recognition. We repair and see the engineering faults, after it has been pounded by industry. I play what if. And self taught myself physics, and solidworks, in order to get a invention to the prototype stage. Self funding is slow progress. So in order to complete the concept, I've invented some small hand tools to fund my work. I've made a random wire inserting tool. It's not finished but almost there. Time wise, it would take 15 hrs to fit coils manually on a 75 kw, 4-pole motor, With my tool, I've consistently got it down to 10hrs. And it's still not there. It can be 3d printed. Witch is my obsession. Thanks for replying
I've also come up with a concept for bonding 3d printer materials while there printed. It's a bit extreme, but it's based on the basic principles of heat and light.
Thank You for Coming Back ! You are Master of Your Trade and we all require your Knowledge to be shared with us! Thanks for Posting a new video and I hope you post regularly .
Mr Gelbart, I have watched your 18 part series on prototyping at least 3 times. While I'm not in the prototyping business, I find tidbits of your knowledge appearing in other places. Thank you.
I can't believe it, just a day ago I started watching your building prototype series again, wondering if you'd ever upload again and the next day... i thought i must be dreaming. thank you for all your videos, they are absolute gold, i can't emphasise how much they helped me!
Hi Dan, I had the good fortune to learn from you at ASML in CT. Those lessons specifically helped tremendously as I transitioned from precision mechanics to medical devices. Your reach is far! FYI, we have been using 3D printing in metal and plastics for production. Printing allows us to make organic shapes which helps us create complicated flexures with less parts. It also allows us to integrate industrial design into our products while avoiding the high cost of injection mold tooling. Our most successful implementation of 3D metal printing is to create micro structures similar to bone which allow better bone ingrowth into an implant.
Sir Dan, nice to see your video again!! Thanks for your video series, great improvement in my knowledge! It was almost impossible to build my first 3d printers, based on steel welded frame, without your video lessons. Many thanks!!!
In the last four years I was busy leading a very talented team of people at Rapidia, developing this 3D metal printing technology. Before that I was in medical devices (Kardium), before that in regular printing (Creo) , even before that in Imaging , before that in Telecom (the list goes on).
Thank you Mr. Gelbart for an extremely informative video. So much of this stuff was just referred to in my materials class in college, but you made it much more understandable.
Thank you! Your videos are among the best on youTube for providing concise, informed advice and knowledge regarding basic prototyping and related processes. I realize it's a huge time investment. But your knowledge and experience provides insight that is often unavailable outside an academic or commercial environment.
Wow! One of the most instructional videos I have watched this year. From reading some initial comments it appears that these vids are few and far between, but I shall enjoy looking back at earlier releases. Subscribed 👍
It's an amazing honor to us to have you back, your videos eare, and now are again, a very inspring font of information for me. Thanks for been back and continue to share your wisdow with us!!!
Thank you! I've been following your videos for a few years now and I keep being amazed at how simple everything sounds when you explain things. I keep coming back to your videos to pick up those little details I missed last time. Good to see you are back, still being able to teach me new things :-)
Dan, I hope you are doing well. Just watched all 18 episodes of your series. It is probably the best series about r&d or prototyping around. Watching your videos I just want more and more. 10/10 rank stuff !
Good to see a new video. I feel like I just got a new tool every time i watch one of your videos. I know many of the things you present, but I really enjoy the way you present it. Your videos are a treasure for future generations.
Oohh yeah, the Professor is back... What was I doing?? Make a coffee, sit back.. And watch whatever he will impart! Thank you. Looks like a very slick set up you guys have got to market, wish you success. It seems to me you would still need 'the back room' machines and machining skills to finish off most of the parts critical dimentions. But a nice step on the evolution of manufacturing. Ps, I still dream about making a lathe like yours. That vidio was such a tease. Carl from Oz..
Dan, I enjoyed watching your prototype series a lot and also learned a lot as I originally studied electrical engineering and work in the IT business for that last decades. I am glad you posted another video today. I hope more will follow soon.
Learned a lot from Your older videos and this new one was no disapointment for sure! Your presentations convey loads of very useful information for us who develop new products and build prototypes for a living. Thanks for taking the time to do this. I could certainly se uses for Your printer in my shop. Shortening the developement cycle would perhaps the strongest incentive.
YES!!! You have no idea how much I needed this, I’m hoping to get a job in a prototyping shop thats getting a 3D metal printer shortly. Love your videos, please don’t disappear again
Hi Dan, I just wanted to say I've seen the Rapidia system and a few samples of its capabilities a couple months ago in the Hatch incubator at UBC. Very innovative approach, and a highly impressive system with many exciting possibilities. At the time I did not know the connection to you, or that Rapidia is based in Vancouver, so it was a real pleasure seeing this video arrive on my youtube subscriptions. So congratulations in regards to Rapidia, and best of luck in its adoption moving forwards.
Hi Dan, keep up the great work. I found your channel because of your high precision lathe/grinder video and I'm hoping you make more videos, because you're very good at explaining things and you clearly have a lot of valuable information to share. Wish I had a professor like you!
I discovered Dan's video I think 2 weeks ago (from AVE). Was disappointed that videos were discontinued. Great to see new videos and surprised by this small coincidence.
What a shock.. Dan Gelbart. I worked for this guy at Creo for years. Sat in many of his lectures at annacis. Poured my heart and soul into something I believed in, only to get the standard corporate kick in the balls as it sold to Scitex..
Hello Mr Gelbart, I just recently found your video series, very nice to see more form you. Please continue the videos, especially for people who would like a more comprehensive understanding. Looks like 3D printing metal parts have become mainstream, not a novelty anymore, very cool. I guess "bigger" parts could also be made with the sintering method, by "water gluing" lol many parts togather. If then you have a big enough furnace to heat it afterwords.
Hi Dan nice to see you back thought my computer was having issues that something has to be wrong here, nice to see you still favoring your lathe build over this 3D event watching anyways. Multi-metal additive manufacturing is something we have seen work that is amazing to us. Great to see you looking well. Thank you, Lance & Patrick.
@Dan Gelbart Your channel has over 28k subscribers from the small number of videos that you've put out. That's unheard of, but there's a good reason for that. Your videos are interesting, informative, and an absolute pleasure to watch. I've honestly learnt more from your series on building prototypes than I think I have from the hundreds of other videos I've watched on the topic. Please, please, please would you do more videos to share your knowledge? I honestly don't even care if they are paid videos, I just want to learn more from you.
I was recently at a trade show where Desktop Metal Studio was being demonstrated, their price point for an "office" system was around $250k AU using FDM rods with binder, a washout station and a separate sintering station.. they claim to have a very specific "scaling" process to ensure the green parts are the correct size so that post sintering the finished part is correct size. I was very interested to hear about the waterbased binder re-activativing to join sub assemblies together, very clever! At the price point you discuss this is a very enticing offering!
Or reduce sag potential by about half by submerging parts in an ionic liquid inside a vacuum chamber. You would still need to vent off water vapour from the binder paste though.
Dan you are awesome! Thank you so much for producing all your videos! I wish you made more but I get that life can get in the way. Anywho hope life is treating you well!
Thanks Dan, a great video as always and awesome to see fresh content from you. This is my first look at this Rapidia system & it was very impressive. It seems to me size wouldn’t be a huge limitation for customers with specific requirements if a large part was broken down, alignment features possibly added, and the components pre-sintered/re-bonded as described. The inert furnace volume then being the limiting factor.
At Fokker Aerostructures in 2010 (I worked there for a while) electron beam additive manufacturing (Sciaky) was (informally) investigated for what I thought were the F-35 titanium flaperon spars which were then forged on one of the super heavy presses which are in the US. A batch would have a lead time of over a year. Additive manufacturing by melting (the Sciaky system is really a MIG welder) I knew would pose great difficulties.
Woo Hoo!!!! Thank you so much for posting another video, I sincerely appreciate your time and knowledge, it is really very generous of you to make and post them.
Mr Gelbart a man of your intelligence knowledge and clear power of delivery is such a rare opportunity . I have pondered over the years as to why no more videos and posted in a recent AVE video (regarding his mention of you and flexures) if anyone had any knowledge as to why the videos stopped and received no replies or awnser I ponder know more. Thank you.
I first watched your video on Thorium reactors which I found fascinating because it is a technology I believe in. When I was a young man I studied production engineering at a Technical college in London. The course was in the 1980s and was tailored towards the Aviation industry or Rolls Royce. My how things have changed. When I was studying I did get a lot of metallurgy education and sintering did come up in the area of Tungsten carbide tooling, but that as it. Thank you for your fascinating presentations. I did see a Curta Calculator on your desk in your pervious video. It would be nice to see a video about mechanical calculators. I have two Curta calculators.
Hi Dan! Nice to see you posting some videos, always something interesting at hand... i remember some of those little demo you would do, with Dave & I, in in your basement. I miss those good times, and Dave.... I hope that you're doing well in all ways.
Great discussion on when to use traditional processes ( CNC, investment cast, etc) vs Additive manufacturing like 3D metal. My takeaways: use 3D metal printing for with internal and/or external complexity, thin parts print faster, post-process machining is required and can be time-consuming, sintering has 16-20% shrinkage in volume, Support structures are needed to prevent warping during printing, annealing in an inert atmosphere to remove printing stresses, wire EDM is one method to remove supports, Cost is $1million for setup plus specialized facility to work in.
Cost of the laser systems (for the same build volume) is high, The sintering type system cost is about $170,000. No machining or post processing needed for sintering type systems in order to remove supports.
Also worth mentioning is 'lost PLA casting' and variations of this. I'm getting into PLA patternmaking too. Awaiting arrival of metal 3D printing but I think that other methods still have the edge.
great in depth info and dont worry, I found it very balanced, so you made sure that an eventual bias is not obvious. I do worry a bit with what you say at around 37:20 => we dont realy know what is in the gasses released by burning off support material.. as a M.D. in oncology I shiver at that thought :s
dr_BD yup a gas spectrometer reading then a safe out gas solution would be handy for across board liability. The same was needed when carbon fibre was in development and health dangers weren’t realised. A bubble through water filter at an additional neutralising gas symbiosis on the outgas.
A huge application field is also mixed materials. Just not through it right now but there are things like Meltio or LaserTec which are laser based but a bit different.
A new Dan Gelbart video after 4 years? There's no way this day could get better!
He's back. Cant believe it after discovering him month ago.
There's a reason I subscribed to his channel
That is a failure of your imagination.
WOW about time, more please.......
Thank you Dan, It's a good day. Any more Air Bearing lathe videos?
I thought I would jot down a short thank you note to tell you how much I have appreciated your videos.
Very rarely do you find someone who can communicate complex information in such a digestible manner. Delightfully delivered with an authority that leaves the viewer in no doubt we are listening to a master in their field.
These videos are in a class of their own and I keep them in a special library.
As a kid in the 1970s in the UK we had a BBC science journalist called James Burke and he was a very special communicator. I get the same excitement and connection with the subject material that I did all those years ago.
Thank you very much Dan.
Thanks you! When I have the time I'll produce more.
@@dgelbart Excellent.
I was going to say the same thing -- this was a very clear explanation, and very soothing in style!
There is definitely something great in the old BBC series -- and there was also another one "The Secret Life of machines with Tim Hunkin."
It was a bit quirky and rustic, but also very calm and just pure genius in demonstrating how stuff works.
If only we had more stuff like that!
@@cogoid yes, Tim Hunkin was marvelous.
@@martinda7446 Computer History Museum in Mountain View, California runs a marvelous project to preserve the heritage of semiconductor industry by interviewing people whose work contributed to it. And then they publish these lengthy, very detailed "Oral History" interviews, full of technical details, on their UA-cam channel. They also have a library of searchable transcripts on their website.
Something like that needs to be done for other crafts. Dan has so much experience, so much to tell both about engineering and about life -- it would be a captivating tale for many people interested in technology and its real history -- with all the ups and downs that come with trying to create something new.
can't believe this, I was hoping for an upload for years , i enjoyed watching every single video in this channel thank you for your time and have a great day
Monsieur Gelbart
You should live hundreds of years and feed us with these precious knowledges. Huge respect and greetings.
Dan - I learn more from you in 45 minutes than I could from taking an entire 40-hour class. You have an amazing knack for distilling information down to the most critical and memorable elements, in an approachable way that someone who's merely curious about it with no experience can understand. I wish we could clone you and have access to your lifetime of lessons learned.
I agree 100%
Check all other Dan's videos : you'll get 3 years of mechanical engineering M.Sc. level manufacturing courses in a handful of videos. Never so much used Pause button to take notes on a UA-cam video ever ! ;-)
I thought this day would never come...
Dan is the Bob Ross of prototyping :) I only wish I could afford those paintbrushes
Bob Ross is the Martyn Poliakoff of painting.
I urge you to check out Tim "The Secret Life Of Components" Hunchin's videos. Very different budget and viewpoint.
I really appreciate the fact you included pricing for the printer, that kind of thing always seems to be a secret for most companies and it's difficult to get public figures.
Says the infant who won't use her real public name!
Oh, the irony.
Dear Dan, You are the teacher I never had.
Your knowledge, experience & method of teaching inspire me.
The future thanks you.
Thank you, sir.
Thing I love about this guy is his flat out honesty about being a partner in a sintering style 3D printer company.
How many UA-cam creates do we watch that either flash name brand tools constantly throughout their videos, constantly name drop the brand name as if there is a minimum amount of times they have to drop the manufacturers name, flat out stop the video flow to introduce us to the sponsor of this video or (the ugliest and most disgusting types of all) flat out take over a channel and the creater becomes a salesman for the company and every video is either related to the product or the product placement throughout the video just wrecks that channel??
It'd be such a breath of fresh air if UA-cam creators would be that honest about sponsorship.
If you want to be a huge blessing to humanity, keep doing these videos regularly for the rest of your life to pass on your knowledge. Really. Thanks Dan!
*BEST* description of metal printing EVER. Thank you!
I am so happy to see you after so many years. You made my day sir.
I am a retired mechanical engineer but I have to admit, I learned a bit! Thank you very much, Dan Gelbart for this YT video.
br from Germany - Karl
Thank you. You inspire me.
I'm just starting out at the age of 48 in prototyping after electric motor rewinding for 32 years.
Thanks.
I used to rewind motors too as a teenager as I couldn't afford new ones. Even built my own motors.
@@dgelbart it's a trade of no recognition.
We repair and see the engineering faults, after it has been pounded by industry.
I play what if.
And self taught myself physics, and solidworks, in order to get a invention to the prototype stage.
Self funding is slow progress.
So in order to complete the concept, I've invented some small hand tools to fund my work.
I've made a random wire inserting tool.
It's not finished but almost there.
Time wise, it would take 15 hrs to fit coils manually on a 75 kw, 4-pole motor,
With my tool, I've consistently got it down to 10hrs.
And it's still not there.
It can be 3d printed.
Witch is my obsession.
Thanks for replying
I've also come up with a concept for bonding 3d printer materials while there printed.
It's a bit extreme, but it's based on the basic principles of heat and light.
Thanks, Dan! Very nice to see you again.
Dan, welcome back and thank you so much for another video. Not that many videos, but each one is like a shining diamond .
Dan man, your previously videos were so unique and information rich, I'm so glad you decided to come back from the future to give us another lesson.
Thank You for Coming Back ! You are Master of Your Trade and we all require your Knowledge to be shared with us! Thanks for Posting a new video and I hope you post regularly .
Mr Gelbart, I have watched your 18 part series on prototyping at least 3 times. While I'm not in the prototyping business, I find tidbits of your knowledge appearing in other places. Thank you.
So glad to see the another video - I love the long form, in depth approach. Thanks Dan!
I can't believe it, just a day ago I started watching your building prototype series again, wondering if you'd ever upload again and the next day... i thought i must be dreaming. thank you for all your videos, they are absolute gold, i can't emphasise how much they helped me!
Hi Dan, I had the good fortune to learn from you at ASML in CT. Those lessons specifically helped tremendously as I transitioned from precision mechanics to medical devices. Your reach is far! FYI, we have been using 3D printing in metal and plastics for production. Printing allows us to make organic shapes which helps us create complicated flexures with less parts. It also allows us to integrate industrial design into our products while avoiding the high cost of injection mold tooling. Our most successful implementation of 3D metal printing is to create micro structures similar to bone which allow better bone ingrowth into an implant.
Sir Dan, nice to see your video again!! Thanks for your video series, great improvement in my knowledge! It was almost impossible to build my first 3d printers, based on steel welded frame, without your video lessons. Many thanks!!!
Dan, can you make a video telling us what you've been up to for the past four years? Your fans want to know!
In the last four years I was busy leading a very talented team of people at Rapidia, developing this 3D metal printing technology. Before that I was in medical devices (Kardium), before that in regular printing (Creo) , even before that in Imaging , before that in Telecom (the list goes on).
@@dgelbart I look forward to learning more about your Rapidia system. It's very interesting.
@@SystemsPlanet Dan has done some videos doing that with waterjet cut profiles and a rubber mat on a press brake.
Great summary of Metal 3d printing. Thank you very much!
Thanks for posting a new video!
Thank you Mr. Gelbart for an extremely informative video. So much of this stuff was just referred to in my materials class in college, but you made it much more understandable.
You have a gift for instruction, and for me personally exciting a desire to attempt and learn something new.
The best overview on metal 3D-printing I have ever seen!! Definitely subscribing!
Excellent and clear discussion of pros and cons. Nice technological approach to 3D printing.
Thank you! Your videos are among the best on youTube for providing concise, informed advice and knowledge regarding basic prototyping and related processes. I realize it's a huge time investment. But your knowledge and experience provides insight that is often unavailable outside an academic or commercial environment.
Wow! One of the most instructional videos I have watched this year. From reading some initial comments it appears that these vids are few and far between, but I shall enjoy looking back at earlier releases. Subscribed 👍
Fantastic to see you back. Hope you find the time to continue the prototyping series beyond this video.
If you need suggestions for topics let me know :-)
It's an amazing honor to us to have you back, your videos eare, and now are again, a very inspring font of information for me. Thanks for been back and continue to share your wisdow with us!!!
Thank you!
I've been following your videos for a few years now and I keep being amazed at how simple everything sounds when you explain things. I keep coming back to your videos to pick up those little details I missed last time.
Good to see you are back, still being able to teach me new things :-)
The Master is back !! Thank you Mr. Gebhart !
Dan, I hope you are doing well. Just watched all 18 episodes of your series. It is probably the best series about r&d or prototyping around. Watching your videos I just want more and more. 10/10 rank stuff !
Excellent description of 3D metal printing Dan! You are a fantastic engineer with a vast knowledge in all areas of mechanical engineering.
Good to see a new video. I feel like I just got a new tool every time i watch one of your videos. I know many of the things you present, but I really enjoy the way you present it. Your videos are a treasure for future generations.
Just made my day!!! Thankyou for coming back Dan!
Oohh yeah, the Professor is back...
What was I doing??
Make a coffee, sit back..
And watch whatever he will impart!
Thank you.
Looks like a very slick set up you guys have got to market, wish you success.
It seems to me you would still need 'the back room' machines and machining skills to finish off most of the parts critical dimentions.
But a nice step on the evolution of manufacturing.
Ps, I still dream about making a lathe like yours.
That vidio was such a tease.
Carl from Oz..
I really like the teaching method of DAN GELBART. He is clear and right to the point. Thank you sir for showing me and the world your skills.
If Dan Gelbart declares an interest, you know it's going to be brilliant. Welcome back.
Thank you very much for the video Mr. Gelbart, great you're back! You're insights and thoughts about manufacturing techniques are pure gold.
So good to see you again; this video made my day. Hope all is well. Kind regards from Portugal
Dan, I enjoyed watching your prototype series a lot and also learned a lot as I originally studied electrical engineering and work in the IT business for that last decades. I am glad you posted another video today. I hope more will follow soon.
Learned a lot from Your older videos and this new one was no disapointment for sure!
Your presentations convey loads of very useful information for us who develop new products and build prototypes for a living.
Thanks for taking the time to do this. I could certainly se uses for Your printer in my shop. Shortening the developement cycle would perhaps the strongest incentive.
YES!!! You have no idea how much I needed this, I’m hoping to get a job in a prototyping shop thats getting a 3D metal printer shortly.
Love your videos, please don’t disappear again
Whoa, never thought I'd see the day! I thought this channel was just reference material at this point.
Dan Gelbart posted a new video! What a piece of exciting news!
Hi Dan, I just wanted to say I've seen the Rapidia system and a few samples of its capabilities a couple months ago in the Hatch incubator at UBC. Very innovative approach, and a highly impressive system with many exciting possibilities. At the time I did not know the connection to you, or that Rapidia is based in Vancouver, so it was a real pleasure seeing this video arrive on my youtube subscriptions. So congratulations in regards to Rapidia, and best of luck in its adoption moving forwards.
Thank you, Mr. Gelbart, for releasing a new video. I always enjoy your opinion, I take a large part of it to reconsider my own point of view.
Hi Dan, keep up the great work. I found your channel because of your high precision lathe/grinder video and I'm hoping you make more videos, because you're very good at explaining things and you clearly have a lot of valuable information to share. Wish I had a professor like you!
I discovered Dan's video I think 2 weeks ago (from AVE). Was disappointed that videos were discontinued. Great to see new videos and surprised by this small coincidence.
Mr. Gelbart if you only knew how happy I was to see a new video from you. Glad to see you’re doing well sir.
New Dan Gelbart video = stop work and get ready to learn. Awesome to see you and excited about Rapidia.
Hi Dan Welcome back to your channel! I hope life has treated you well, and its a pleasure to once again observe your offering. Thanks.
What a shock.. Dan Gelbart. I worked for this guy at Creo for years. Sat in many of his lectures at annacis. Poured my heart and soul into something I believed in, only to get the standard corporate kick in the balls as it sold to Scitex..
I did a double-take when Dan Gelbart reappeared in my notifications! Best wishes with your new enterprise.
Always a pleasure to watch you explain anything, thank you
Hello Mr Gelbart, I just recently found your video series, very nice to see more form you. Please continue the videos, especially for people who would like a more comprehensive understanding.
Looks like 3D printing metal parts have become mainstream, not a novelty anymore, very cool. I guess "bigger" parts could also be made with the sintering method, by "water gluing" lol many parts togather. If then you have a big enough furnace to heat it afterwords.
Hi Dan nice to see you back thought my computer was having issues that something has to be wrong here, nice to see you still favoring your lathe build over this 3D event watching anyways. Multi-metal additive manufacturing is something we have seen work that is amazing to us. Great to see you looking well.
Thank you, Lance & Patrick.
@Dan Gelbart Your channel has over 28k subscribers from the small number of videos that you've put out. That's unheard of, but there's a good reason for that. Your videos are interesting, informative, and an absolute pleasure to watch. I've honestly learnt more from your series on building prototypes than I think I have from the hundreds of other videos I've watched on the topic. Please, please, please would you do more videos to share your knowledge? I honestly don't even care if they are paid videos, I just want to learn more from you.
I was recently at a trade show where Desktop Metal Studio was being demonstrated, their price point for an "office" system was around $250k AU using FDM rods with binder, a washout station and a separate sintering station.. they claim to have a very specific "scaling" process to ensure the green parts are the correct size so that post sintering the finished part is correct size. I was very interested to hear about the waterbased binder re-activativing to join sub assemblies together, very clever! At the price point you discuss this is a very enticing offering!
video here for comparison, ua-cam.com/video/ieg2MV5v2us/v-deo.html
Interesting video, sintering at zero gravity might allow for larger objects?
Just have to get your machine into orbit.
Or reduce sag potential by about half by submerging parts in an ionic liquid inside a vacuum chamber.
You would still need to vent off water vapour from the binder paste though.
Such a wealth of knowledge you are, good to see & hear you again.
So great to see what you've been doing Dan. Loved when I had the opportunity to get around you and work with you during my Creo days 👍
I'm subbing even though it's been a long time since you've posted. I love the way you teach. Thank you and GOD bless you!
Dan Gelbart is back !!! Great video. Please, keep going.
Happy to be witnessing history! Thanks for the new video Mr. Dan
Dan's explanation is excellent! Very knowledgeable man!
Dan you are awesome! Thank you so much for producing all your videos! I wish you made more but I get that life can get in the way. Anywho hope life is treating you well!
Thank you for another masterclass Mr. Gelbart. Your videos are worth the wait.
חנוכה שמח
Thanks Dan, a great video as always and awesome to see fresh content from you. This is my first look at this Rapidia system & it was very impressive.
It seems to me size wouldn’t be a huge limitation for customers with specific requirements if a large part was broken down, alignment features possibly added, and the components pre-sintered/re-bonded as described. The inert furnace volume then being the limiting factor.
So glad to see another Video Dan! I've always loved your videos, but realize they take time to make. Thanks for taking the time to make one!
At Fokker Aerostructures in 2010 (I worked there for a while) electron beam additive manufacturing (Sciaky) was (informally) investigated for what I thought were the F-35 titanium flaperon spars which were then forged on one of the super heavy presses which are in the US. A batch would have a lead time of over a year. Additive manufacturing by melting (the Sciaky system is really a MIG welder) I knew would pose great difficulties.
Woo Hoo!!!! Thank you so much for posting another video, I sincerely appreciate your time and knowledge, it is really very generous of you to make and post them.
The Master returns! I love watching your series.
Mr Gelbart a man of your intelligence knowledge and clear power of delivery is such a rare opportunity . I have pondered over the years as to why no more videos and posted in a recent AVE video (regarding his mention of you and flexures) if anyone had any knowledge as to why the videos stopped and received no replies or awnser I ponder know more. Thank you.
I haven't been this happy in 4 years!! Thanks for the upload
NOW, we know what he was busy doing! ;-) . Congrats and good work.
Just come across your videos Dan and I love them. I hope you get back to making more regular videos
OMG, Dan!! Good to have you back :)
Nicely done with all the information needed for a real educated decision on the field of purchase.
More than 3/4 of an hour and not once did I think this was a long video.
Great to see you again Dan. I wondered what you were up to lately. A very informative video. Good luck in your new venture.
Welcome back, you have been missed.
Great to see you back. Always wonderful content.
Welcome back thanks for posting
I first watched your video on Thorium reactors which I found fascinating because it is a technology I believe in.
When I was a young man I studied production engineering at a Technical college in London.
The course was in the 1980s and was tailored towards the Aviation industry or Rolls Royce.
My how things have changed. When I was studying I did get a lot of metallurgy education and sintering did come up in the area of Tungsten carbide tooling, but that as it.
Thank you for your fascinating presentations.
I did see a Curta Calculator on your desk in your pervious video. It would be nice to see a video about mechanical calculators. I have two Curta calculators.
I have taken a real look at your content on your channel here... Inspired and mind blown.
Hi Dan! Nice to see you posting some videos, always something interesting at hand... i remember some of those little demo you would do, with Dave & I, in in your basement. I miss those good times, and Dave.... I hope that you're doing well in all ways.
Great discussion on when to use traditional processes ( CNC, investment cast, etc) vs Additive manufacturing like 3D metal.
My takeaways: use 3D metal printing for with internal and/or external complexity, thin parts print faster, post-process machining is required and can be time-consuming, sintering has 16-20% shrinkage in volume, Support structures are needed to prevent warping during printing, annealing in an inert atmosphere to remove printing stresses, wire EDM is one method to remove supports, Cost is $1million for setup plus specialized facility to work in.
Cost of the laser systems (for the same build volume) is high, The sintering type system cost is about $170,000. No machining or post processing needed for sintering type systems in order to remove supports.
Mr. Gelbart, i'm glad you are here again and hope you are well!
Also worth mentioning is 'lost PLA casting' and variations of this. I'm getting into PLA patternmaking too. Awaiting arrival of metal 3D printing but I think that other methods still have the edge.
Fantastic video!! So happy to see new videos come up!
great in depth info and dont worry, I found it very balanced, so you made sure that an eventual bias is not obvious.
I do worry a bit with what you say at around 37:20 => we dont realy know what is in the gasses released by burning off support material.. as a M.D. in oncology I shiver at that thought :s
dr_BD yup a gas spectrometer reading then a safe out gas solution would be handy for across board liability. The same was needed when carbon fibre was in development and health dangers weren’t realised. A bubble through water filter at an additional neutralising gas symbiosis on the outgas.
Loads of supporting details!!! I Love this man.
A huge application field is also mixed materials. Just not through it right now but there are things like Meltio or LaserTec which are laser based but a bit different.