I am brand new to resin-ing. I'm miles away from pouring my own molds, but I have so many awesome ideas that require I learn how! When this video popped up I knew I had to watch it. (Actually I had to watch it a few times bc I didn't understand some of the silicone/molding jargon the first times, that's how new I am to all this lol) But wow!! Did I ever learn a lot! With the simple, easy-to-follow instructions and your skilled guidance and explanations, this looks totally doable for me when the time comes. Thank you so much for sharing this with the public. Very appreciated.
Wow, thank you very much. We try to show some of the best tricks in the mold making process so our customers have the highest chance of success making great parts.
Hi Dustin, thanks for the compliment. This video is representative of our company's knowledge and experience in this industry. If you have a project or application that requires mold making and casting, consider us as you source! info@bjbenterprises.com
Brilliant, Brilliant, Brilliant! Thank you so much, I am a South African so there is very little chance that I will be able to do business with BJB and yet they make this content available to all of us for free. High quality, in depth detail regarding the holistic process. You guys are as generous as you are skillful!!
+Grim Falcon Wow, thanks for the compliments! Although we've pretty much shipped all over the world, getting product to South Africa is indeed expensive from the US.
I'm with the crowd on this one! I've watched dozens and dozens of instructional videos while I've been learning the silicone mold making process, and this one is like an epiphany. Thank you for the clarity and for sharing your skills.
I found this tutorial exeptional in explanation and found the detailed reasons why a certain procedure is executed very helpful. The teacher was very clear and professional in speaking and was easy to understand. The lack of any background music was also very much appreciated as it was not present to drown out the presenter and also because I suffer from misophonia, a hearing condition. Thank you very much for your very well presented presentation about your products and the processes in which to use them effectively.
I rarely comment on any UA-cam videos but I have to now because I think you guys deserve it. One of the best tutorials ever and exactly what I need!! I'm jumping onto your website now. Please keep up the good work!
EASILY the best video I've seen on the topic, by far. ..Very professional and informative but still kept it as simple as possible.. Keep up the great work.
@@bjbenterprises I worked it out.. jealousy :) keep up the good work. i've only recently started to master 3d printing but you can't beat PU systems by the looks of it, for repeatability and speed.. i just know your vids are going to help me no end in my new job role. A million thanks for disambiguating it an making it look easy.. 10/10 from me :)
A very good video. Comprehensive coverage on everything. Very well presented and with ALL the details that are so lacking in so many others. Great. Thankyou
Excellent video that gives me the confidence to reproduce some (unavailable) plastic parts missing from my Jaguar XK8 project car that were missing when I purchased it - Many Thanks
Yes, there are several methods you can use to hold down the pattern. White Elmer's glue is another method some people use, as well as hot glue, oil based clay, and a variety of others. Be sure the silicone is compatible with that material and make sure it doesn't damage the pattern when removing.
@@bjbenterprises Thank you SO MUCH for the information. You have been super helpful and I really appreciate it. Keep up the amazing work & God Bless! 🙏🏻
You can make almost anything like traffic light parts, car wheel covers and even spare parts for old toys. This tutorial just made me think of establishing something called 'The Robot Hospital'.
This is the best mould making video on UA-cam! So clear and informative, straightforward with 100% of the video on topic! Thank you so much, I was almost going to give up making my own moulds but now I shall definitely be doing them. I shall see if your products are available in my country and if they are I shall definitely be buying from you!
Thank you for that. We're happy this info is getting to those who appreciate it. Also keep in mind that we have all of those handy items that are used in the videos like vents, fill ports, funnels, registration keys... plus the mold making and casting materials. www.bjbenterprises.com
I’m in the process of making my list of products right now. If I contact you all via email, are you guys pretty responsive? I’m not sure exactly which silicone to pick for my particular application.
@@petebutler5139 yes we typically respond within 15-30 minutes, or you can use our chat feature. Send any material questions to: info@bjbenterprises.com
AH! Plenty of thanks! I am learning to make molds and casting, but was not aware of the feed and vent tubes, and how to position them. I seen some examples when peple pour resin into the first half, and then place the top mold part on top- but that will surely guarantee the pry line, and maybe some stubborn bubbles.
Thank you very much. I have watched this before but didn't remember some important details and my first cast didn't turn out well. After watching it again I noticed every detail you included to make the cast part look perfect. Thanks again.
that was a nice instructional video. I would like to try out making molds. One area i wish you had done more with on this video is the step of selecting the material used to cast and preparing it for pouring and perhaps showed a variety of those products that could have been used for this silicone mold.
Thanks for the comment. Choosing a material is an entire conversation on its own due to the variety of materials available and also the physical properties needed by the part and application. One of the first things we look at is choosing what Durometer we need for a material, and go from there. This is one of the most important things to learn when you are first getting into mold making and casting. We do have a video on that topic. ua-cam.com/video/Q6jn223_1Mw/v-deo.html
Fantastic video, very calming to watch and listen to. Just discovered the possibility of a silicone mold. I am very eager to try this myself one day. Thanks!
Hi, I agree that you have the very best videos on UA-cam for making silicone molds, and casting the parts. I am making 1/25 scale model car parts like valve covers, various engine parts, wheels and tires, and probably other things including possibly a whole body and a whole frame. What I am trying to do is to cast several parts in one mold, to save both time and mold making. Injection molded styrene plastic parts are connected with sprues that run from part to part. Is such an operation possible by using resin flowing, only by gravity, to make more than one part in a mold at a time?
Good question. Multiple cavity molds are possible if the parts are fairly simple, and you have appropriate vents set up for the parts to allow for trapped air to escape. However, it's not done as often with urethane casting compared to injection molding. If the parts are small, then there is not a lot of silicone material saved by combining multiple parts in one mold vs separate. If one of the mold cavities has an issue or wears out, then you end up with wasted casting material and bad parts from one cavity whenever you cast. It's a process worth exploring if you have a need to reproduce several simple parts at once. Keep in mind that thin sprues will not feed the other cavities very well so it's best to feed each mold cavity from a larger, central reservoir and go from there.
This video (and part 2) is absolutely fantastic - it gets into the maths and science behind mold making, and makes it very clear and engaging. I'm planning to cast a model of an excavator bucket and being similar (in principle) to the helmet, I will be able to follow most of this to the letter. However, the bucket has relatively sharp teeth pointing away from its concave body so if I mount it as you have mounted the helmet, the sharpest parts will be inclined upward rather than downward. I was thinking of running small vents from each of the five teeth to counter this.
LennyRhys Hi Lenny, yes you would probably want to put the teeth vertical and simply run small vents off of them. You can customize the shape of the vents to make a "Tab" instead of a sharp point which might help better define the edge of the teeth. If you put a definite line at the point the tab touches, it will typically break clean at that spot when removing the vents during the demold process. Think of the tabs that hold parts on the runners of a typical plastic model kit and you've got the idea!
BJBEnterprises Thanks so much for the quick and helpful response! One last question that I don't think was answered in the video: does the mating surface of the two silicone mold "halves" have to be horizontal, or is that more for simplicity rather than necessity? The reason I ask is that I want to run the seam along the opening of the bucket, but the sidewalls of the bucket are not straight; instead they look like... pacman with a very wide open mouth, about 160 degrees. If the mold halves matched this angle, might there be complications?
LennyRhys Correct, the split line was done flat for simplicity. There is no problem to do what you need to do for the bucket. If your parting line (mold flange) is curved or changes levels you simply need to build up something underneath the part to meet that level. Most people likely use modeling clay because it is easy to mold and shape, but you can also custom cut wood pieces (or use a plastic like the styrene shown in this video) to create that line if the geometry is fairly simple . We address that in our other video: ua-cam.com/video/b_KMWhJyYLE/v-deo.htmlm The next thing to do is make sure you have good alignment keys for proper registration. If you cast the silicone mold into a square/rectangular block, you can place it on a board and angle the fill port and vents accordingly.
I noticed that, at 17:14 in the video, you use what looks like some sort of PVC pipe injection device. What is that, exactly? Is there another video in which we can learn how to make one of those for larger molded parts? Thank you!
Hi Matt, what you are seeing there is a static mix tube from our meter-mix dispense equipment. So it's not as simple as a PVC pipe injection rig. Having said that, there are some people who use tall PVC pipes to act as their pour funnel and occasionally they will rig-up a piston inside of it to manually force material into the mold. Here is a sample video of the equipment I mentioned: ua-cam.com/video/62G4NlXKurI/v-deo.html
Thank you! What would you recommend for a casting made in a silicone mold that's about 5" x 2" x 1" (about 10 cubic inches). I'd be interested to know what sort of resin or material you'd use to actually MAKE the casting, and the method by which you'd do it. Thank you!
We have so many options, it depends on what you want the finished part to feel like (ABS? PC? Polypropylene? Rubber?). Our part 2 video addresses casting parts, but if you need more help choosing it's best to chat with our Tech Staff to narrow down material selection: info@bjbenterprises.com ua-cam.com/video/tnY86LIHf_I/v-deo.html
There are occasions where a vent needs to be added after the mold is made. You may find there is a problem area in the mold that needs a vent, the acrylic vent post came loose while pouring silicone and had to be removed before cure, or you simply forgot a vent somewhere. A couple of options: you could simply drill a small hole through the silicone (however it leaves a rough hole that will break down quicker over time), or you can bore out a vent using a small brass tube that has been sharpened at the end (this produces the cleanest result).
I recently found an old vintage part in plastic that would require at least a 3 piece mold. I have scoured the web and have seen some references to them along with some pictures but thats about it. It would be nice to see a video on that to better help get my head wrapped around it. Splitting something in half is pretty straight forward. splitting it into 3 or more parts well that would be a something :D
Thanks for the idea. Yes it can be a little trickier to set up parting line for a 3-piece mold. You need to imagine what direction the mold pieces need to be removed away from the part based on geometry and details. In other words, the mold pieces need to pull off without getting trapped by the part geometry. It's still much easier with silicone molds vs traditional rigid tooling, but we understand the details of "how" to approach it are a challenge. If you need help, feel free to reach our to our tech team and they may be able to assist your mold design. A short description and a few pics work best: info@bjbenterprises.com
Most of the pumps we have in our facility are the Welch 17.7 CFM. They are workhorses and give years of reliable service, plus they can be rebuilt down the line if needed.
Thanks for producing such a clear and concise training video. The best that I have seen. In the video, you did not mention if the mold and the resin should be put in a pressure pot while the casting is being cured to avoid bubbles. Please advise.
Fook Y Loh pressure casting is a great way to improve the quality of your parts, but setting up a mold properly from the beginning is the best method for overall consistency. Pressure casting should be an “insurance policy” and not depended on to minimize trapped air bubbles. It’s easy to use pressure casting on small molds but what if you are casting a large mold and your mold doesn’t fit in your pressure vessel? If you learn and practice the proper way to arrange vents and the fill port, you can often produce excellent results without pressure as shown in the video. Great question and thank you for the comment! -BJB
Great question. Yes, you can also use dowel pins for alignment if that is what you prefer. For pins, you don't want to use the silicone as a pin. Always use a rigid piece of material like metal or plastic.
Yes, you can cast Silicone into Silicone with an appropriate mold release if the geometry allows easy application. Note that a Platinum based silicone would not cure well in a Tin based silicone mold (cure inhibition).
We don't have a video specifically on just that topic, but we discuss in detail here in this video: ua-cam.com/video/iRj6xzNx7P4/v-deo.htmlm20s as well as our other mold tutorial: ua-cam.com/video/b_KMWhJyYLE/v-deo.htmlm24s
THIS IS PROBABLY THE BEST MOLD MAKING VIDEO ON THE INTERNET
Little correction, not only on internet but on earth. The best explanation and demo.
I am brand new to resin-ing. I'm miles away from pouring my own molds, but I have so many awesome ideas that require I learn how!
When this video popped up I knew I had to watch it. (Actually I had to watch it a few times bc I didn't understand some of the silicone/molding jargon the first times, that's how new I am to all this lol)
But wow!! Did I ever learn a lot! With the simple, easy-to-follow instructions and your skilled guidance and explanations, this looks totally doable for me when the time comes.
Thank you so much for sharing this with the public. Very appreciated.
Might be the nicest silicone mold I've seen done
Wow, thank you very much. We try to show some of the best tricks in the mold making process so our customers have the highest chance of success making great parts.
I'm super impressed with the care taken to very clearly detail the mold making process. I can't imagine a better mold making tutorial.
Hi Dustin, thanks for the compliment. This video is representative of our company's knowledge and experience in this industry. If you have a project or application that requires mold making and casting, consider us as you source! info@bjbenterprises.com
This video is one of the best training video's I have ever seen. Fantastic job.
It's definitely the best "how to make 2-part-silicone mold" video on youtube !
Everything is clear and informative. Thank you for your amazing job !
Wow, thank you! We do our best.
Brilliant, Brilliant, Brilliant!
Thank you so much, I am a South African so there is very little chance that I will be able to do business with BJB and yet they make this content available to all of us for free. High quality, in depth detail regarding the holistic process. You guys are as generous as you are skillful!!
+Grim Falcon Wow, thanks for the compliments! Although we've pretty much shipped all over the world, getting product to South Africa is indeed expensive from the US.
Excellent tutorial. You know you have a rational, technically minded instructor when they've opted for a tungsten ring over a gold one.
Haha, good eye!
Just found this. Extraordinary in every way; content, delivery, and production.
Thank you!
I'm with the crowd on this one! I've watched dozens and dozens of instructional videos while I've been learning the silicone mold making process, and this one is like an epiphany. Thank you for the clarity and for sharing your skills.
Wow, what a compliment. Thank you! Be sure to subscribe and share!
One of the best tutorials I have seen on UA-cam. Good job sirs.
I found this tutorial exeptional in explanation and found the detailed reasons why a certain procedure is executed very helpful. The teacher was very clear and professional in speaking and was easy to understand. The lack of any background music was also very much appreciated as it was not present to drown out the presenter and also because I suffer from misophonia, a hearing condition. Thank you very much for your very well presented presentation about your products and the processes in which to use them effectively.
ytfp $#€×*&?€&7'^_' aew
I rarely comment on any UA-cam videos but I have to now because I think you guys deserve it. One of the best tutorials ever and exactly what I need!! I'm jumping onto your website now. Please keep up the good work!
Wow that is awesome! Thank you for the kind words and we will continue putting out great content!
I have to say this is by far the clearest, most helpful and informative video about casting I've seen so far. Really helpful, thank you.
Excellent tutorial! Quick, simple, no interjection of personality, nor loud music.
Yes, cause god forfrikkinbid that someone in thei corporate takeover world dare to exhibit a personality which might cause you to have a feeling
EASILY the best video I've seen on the topic, by far. ..Very professional and informative but still kept it as simple as possible.. Keep up the great work.
wow..! what a good and beautiful teacher..! BIG THANKS
Wow this is like "next level" mold making. It looks so precise, clean and professional!
What a great instructional video! You covered everything I have been trying to figure out myself thanks!
By far the most clear informative video I’ve seen. Great job !!!
Not sure how 133 people can thumbs down your efforts, I think your vids are brilliant - cheers :)
Thank you Lee, we're not sure either.
@@bjbenterprises I worked it out.. jealousy :) keep up the good work. i've only recently started to master 3d printing but you can't beat PU systems by the looks of it, for repeatability and speed.. i just know your vids are going to help me no end in my new job role. A million thanks for disambiguating it an making it look easy.. 10/10 from me :)
A very good video. Comprehensive coverage on everything. Very well presented and with ALL the details that are so lacking in so many others. Great. Thankyou
Perfect tutorial... amazing example which build's up hope and makes us to think in a new... method
Wow! What a clean mold. Well done!
Thanks!
Realy realy great video. Nice info, good sound and lighting, and it realy shows me, that you know what it is all about. Thanks.
+hfranke07 Thank you on all points! The new light stands in our studio are working, then.
I have to agree the best training video I’ve ever watched bravo job well done and extremely explanatory thank you
Excellent video that gives me the confidence to reproduce some (unavailable) plastic parts missing from my Jaguar XK8 project car that were missing when I purchased it - Many Thanks
I hope you can make another video for casting. Thumbs up.
gfhr b39 check out our channel and subscribe, we have lots more casting videos and more on the way.
Great video/tutorial! Could I use Clear Adhesive Vinyl Laminate instead of double sided tape? Thanks!
Yes, there are several methods you can use to hold down the pattern. White Elmer's glue is another method some people use, as well as hot glue, oil based clay, and a variety of others. Be sure the silicone is compatible with that material and make sure it doesn't damage the pattern when removing.
@@bjbenterprises Thank you SO MUCH for the information. You have been super helpful and I really appreciate it. Keep up the amazing work & God Bless! 🙏🏻
Thankss for sharing BJBEnterprises
This video is extremely informative. Thank you.
You can make almost anything like traffic light parts, car wheel covers and even spare parts for old toys.
This tutorial just made me think of establishing something called 'The Robot Hospital'.
Definitely one of the best tutorial I've ever seen!
First vid that’s told my why I shouldn’t take the pattern out of the mould at the mid point.
Excellent explanation. Learnt a lot. Thank you
This is the best mould making video on UA-cam! So clear and informative, straightforward with 100% of the video on topic! Thank you so much, I was almost going to give up making my own moulds but now I shall definitely be doing them. I shall see if your products are available in my country and if they are I shall definitely be buying from you!
thank you for the great hints I have ben making molds for candles for years just never for making plastic.
Excellent EXCELLENT training video. I have shared it quite a bit with my fellow hobbyists.
Thank you for that. We're happy this info is getting to those who appreciate it. Also keep in mind that we have all of those handy items that are used in the videos like vents, fill ports, funnels, registration keys... plus the mold making and casting materials. www.bjbenterprises.com
I’m in the process of making my list of products right now. If I contact you all via email, are you guys pretty responsive? I’m not sure exactly which silicone to pick for my particular application.
@@petebutler5139 yes we typically respond within 15-30 minutes, or you can use our chat feature. Send any material questions to: info@bjbenterprises.com
AH! Plenty of thanks! I am learning to make molds and casting, but was not aware of the feed and vent tubes, and how to position them.
I seen some examples when peple pour resin into the first half, and then place the top mold part on top- but that will surely guarantee the pry line, and maybe some stubborn bubbles.
Thank you very much. I have watched this before but didn't remember some important details and my first cast didn't turn out well. After watching it again I noticed every detail you included to make the cast part look perfect. Thanks again.
that was a nice instructional video. I would like to try out making molds. One area i wish you had done more with on this video is the step of selecting the material used to cast and preparing it for pouring and perhaps showed a variety of those products that could have been used for this silicone mold.
Thanks for the comment. Choosing a material is an entire conversation on its own due to the variety of materials available and also the physical properties needed by the part and application. One of the first things we look at is choosing what Durometer we need for a material, and go from there. This is one of the most important things to learn when you are first getting into mold making and casting. We do have a video on that topic. ua-cam.com/video/Q6jn223_1Mw/v-deo.html
Fantastic video, very calming to watch and listen to. Just discovered the possibility of a silicone mold. I am very eager to try this myself one day. Thanks!
Thank you for the feedback! It's a great skill to learn and hopefully we have given you the confidence to go try it.
Check out silicon putty, that is super easy
Diane Dragon soso
LOVE the details. Very Informing.
Very very interesting, excellent video tutorial
Great video and level of detail! Thanks
great video
That was a very very helpful professional mold making tutorial. Thank you so much.
Thank you for sharing an excellent tutorial.
Very informative... Thanks!
An easy to follow tutorial, I'm gonna try this with a 3d printed trinket to make more for cosplay/props.
I agree Scott, best Video I have seen to.
Great video.
Very nice instructions
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Thank you very much, really great insight. You guys rule!
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💙💙💙All of your tutorials are extremely helpful. Thank you!💙💙💙
.
Really accurate mold making tutorial! Nice & helpfully!
Excellent video!
Hi, I agree that you have the very best videos on UA-cam for making silicone molds, and casting the parts. I am making 1/25 scale model car parts like valve covers, various engine parts, wheels and tires, and probably other things including possibly a whole body and a whole frame.
What I am trying to do is to cast several parts in one mold, to save both time and mold making. Injection molded styrene plastic parts are connected with sprues that run from part to part. Is such an operation possible by using resin flowing, only by gravity, to make more than one part in a mold at a time?
Good question. Multiple cavity molds are possible if the parts are fairly simple, and you have appropriate vents set up for the parts to allow for trapped air to escape. However, it's not done as often with urethane casting compared to injection molding. If the parts are small, then there is not a lot of silicone material saved by combining multiple parts in one mold vs separate. If one of the mold cavities has an issue or wears out, then you end up with wasted casting material and bad parts from one cavity whenever you cast. It's a process worth exploring if you have a need to reproduce several simple parts at once. Keep in mind that thin sprues will not feed the other cavities very well so it's best to feed each mold cavity from a larger, central reservoir and go from there.
Excellent , thank you.
This video (and part 2) is absolutely fantastic - it gets into the maths and science behind mold making, and makes it very clear and engaging. I'm planning to cast a model of an excavator bucket and being similar (in principle) to the helmet, I will be able to follow most of this to the letter. However, the bucket has relatively sharp teeth pointing away from its concave body so if I mount it as you have mounted the helmet, the sharpest parts will be inclined upward rather than downward. I was thinking of running small vents from each of the five teeth to counter this.
LennyRhys Hi Lenny, yes you would probably want to put the teeth vertical and simply run small vents off of them. You can customize the shape of the vents to make a "Tab" instead of a sharp point which might help better define the edge of the teeth. If you put a definite line at the point the tab touches, it will typically break clean at that spot when removing the vents during the demold process. Think of the tabs that hold parts on the runners of a typical plastic model kit and you've got the idea!
BJBEnterprises Thanks so much for the quick and helpful response! One last question that I don't think was answered in the video: does the mating surface of the two silicone mold "halves" have to be horizontal, or is that more for simplicity rather than necessity? The reason I ask is that I want to run the seam along the opening of the bucket, but the sidewalls of the bucket are not straight; instead they look like... pacman with a very wide open mouth, about 160 degrees. If the mold halves matched this angle, might there be complications?
LennyRhys Correct, the split line was done flat for simplicity. There is no problem to do what you need to do for the bucket. If your parting line (mold flange) is curved or changes levels you simply need to build up something underneath the part to meet that level. Most people likely use modeling clay because it is easy to mold and shape, but you can also custom cut wood pieces (or use a plastic like the styrene shown in this video) to create that line if the geometry is fairly simple . We address that in our other video: ua-cam.com/video/b_KMWhJyYLE/v-deo.htmlm The next thing to do is make sure you have good alignment keys for proper registration. If you cast the silicone mold into a square/rectangular block, you can place it on a board and angle the fill port and vents accordingly.
BJBEnterprises Excellent! I will make sure to share my progress and results! Thanks again!
Can u use a pressure pot on the sillicone?
Wish I watched this one first, I could have skipped the 10 I watched before. Great video and thank you : )
I noticed that, at 17:14 in the video, you use what looks like some sort of PVC pipe injection device. What is that, exactly? Is there another video in which we can learn how to make one of those for larger molded parts?
Thank you!
Hi Matt, what you are seeing there is a static mix tube from our meter-mix dispense equipment. So it's not as simple as a PVC pipe injection rig. Having said that, there are some people who use tall PVC pipes to act as their pour funnel and occasionally they will rig-up a piston inside of it to manually force material into the mold. Here is a sample video of the equipment I mentioned: ua-cam.com/video/62G4NlXKurI/v-deo.html
Thank you! What would you recommend for a casting made in a silicone mold that's about 5" x 2" x 1" (about 10 cubic inches).
I'd be interested to know what sort of resin or material you'd use to actually MAKE the casting, and the method by which you'd do it.
Thank you!
We have so many options, it depends on what you want the finished part to feel like (ABS? PC? Polypropylene? Rubber?). Our part 2 video addresses casting parts, but if you need more help choosing it's best to chat with our Tech Staff to narrow down material selection: info@bjbenterprises.com ua-cam.com/video/tnY86LIHf_I/v-deo.html
instructions very well done
Very nice!
Wow! Plastic heat injection mold will have the run for their money.
excellent, i feel much of the concepts apply professional injection molding
I am practicing with molds. One part molds are simple ad easy, it's the more complicated sculpts and small hands that are challenging.
Wow... Good... But what kind of separator u use....
SUNIL G. SHARMA 14:23
Great job
An excellent video
Excellent
very helpful, thank
excellent video. cristal clear and very informative
Francois Mayer Thanks!
Thanks for a great video. A question is if you forgot to add air vents, is there a way to add them afterward? thanks
There are occasions where a vent needs to be added after the mold is made. You may find there is a problem area in the mold that needs a vent, the acrylic vent post came loose while pouring silicone and had to be removed before cure, or you simply forgot a vent somewhere. A couple of options: you could simply drill a small hole through the silicone (however it leaves a rough hole that will break down quicker over time), or you can bore out a vent using a small brass tube that has been sharpened at the end (this produces the cleanest result).
@@bjbenterprises Thanks great advice.
Excellent tutorial video! Thank you!
Excellent video. Fantastic detail.
ChiaraDental n
I recently found an old vintage part in plastic that would require at least a 3 piece mold. I have scoured the web and have seen some references to them along with some pictures but thats about it. It would be nice to see a video on that to better help get my head wrapped around it. Splitting something in half is pretty straight forward. splitting it into 3 or more parts well that would be a something :D
Thanks for the idea. Yes it can be a little trickier to set up parting line for a 3-piece mold. You need to imagine what direction the mold pieces need to be removed away from the part based on geometry and details. In other words, the mold pieces need to pull off without getting trapped by the part geometry. It's still much easier with silicone molds vs traditional rigid tooling, but we understand the details of "how" to approach it are a challenge. If you need help, feel free to reach our to our tech team and they may be able to assist your mold design. A short description and a few pics work best: info@bjbenterprises.com
excellent video !!
What desktop vacuum pump do you use ?
Most of the pumps we have in our facility are the Welch 17.7 CFM. They are workhorses and give years of reliable service, plus they can be rebuilt down the line if needed.
best video i have ever seen thank you great job!
Although, this video is too old, but it have a big value
I think I'm ready for my first mold.
Aeolidae we think you’re ready too!
What tape is that you are using to stick it down?
Thanks for producing such a clear and concise training video. The best that I have seen. In the video, you did not mention if the mold and the resin should be put in a pressure pot while the casting is being cured to avoid bubbles. Please advise.
Fook Y Loh pressure casting is a great way to improve the quality of your parts, but setting up a mold properly from the beginning is the best method for overall consistency. Pressure casting should be an “insurance policy” and not depended on to minimize trapped air bubbles. It’s easy to use pressure casting on small molds but what if you are casting a large mold and your mold doesn’t fit in your pressure vessel? If you learn and practice the proper way to arrange vents and the fill port, you can often produce excellent results without pressure as shown in the video. Great question and thank you for the comment! -BJB
Excellent !!
Very well prepared and informative video!
can pegs be used in place of alignments?
Great question. Yes, you can also use dowel pins for alignment if that is what you prefer. For pins, you don't want to use the silicone as a pin. Always use a rigid piece of material like metal or plastic.
good video
Great job!! Thank you so much!
one of the best videos ...
Hi, Can you make a mold of silicone and also cast with silicone if you use a silicone mold release?
Yes, you can cast Silicone into Silicone with an appropriate mold release if the geometry allows easy application. Note that a Platinum based silicone would not cure well in a Tin based silicone mold (cure inhibition).
Excellent, and very informative. Well done.
very good work, thanks for sharing
James Anderton Thanks!
are there any videos that help explain where a pour spout should be placed for a 2 part mold?
We don't have a video specifically on just that topic, but we discuss in detail here in this video: ua-cam.com/video/iRj6xzNx7P4/v-deo.htmlm20s as well as our other mold tutorial: ua-cam.com/video/b_KMWhJyYLE/v-deo.htmlm24s
Very nice... me gustaría asesoría y contactos para adquirir sus productos para mis proyectos.
Great Video! 5 star!
Exceptional video, very very helpful.
Have you guys still got the mold for that clear car tail light shown in the video? Would you be interested in producing a small batch in red?