your point about eye protection is well taken! Many,many years ago went I first started in trade there was a fellow in the tool room who had lose an eye using a Dumore tool post grinder! Always use PPE!
Hi Mr. Pete: like the series, and especially appreciate your emphasis on safety. I would add that when I was a kid working in the oilfields of Texas (50+years ago) I was taught two things: NEVER put your face in line with the grinding wheel and NEVER grind aluminum, etc. because it gets embedded in the wheel and it may come apart at hi RPM. Looking forward to the next one about live centers. Thanks
Shop vacuums are one of the best devices for home use in the last forty years or so. I would suggest that you fashion a metal collector for the grit to avoid the deterioration of the plastic collector. Or perhaps install a thin metal plate with epoxy inside the collector. An interesting video, as usual. Many thanks.
Once again good information shared. Thankyou. It was interesting reading the text in the catalogue. It said one of the speeds available for the grinder was 9400 rpm. That's pretty fast.
I just ground my first part on my 16” SB lathe; a hardened Walstrum no. 1 Morse taper adapter, (that was 15/16”, and I ground it down to fit my largest R-8 collet 7/8”). To align the grinder with the axis of the lathe and get the height right at the same time, I put centers in both the headstock, and tailstock, and that gave me alignment and height simultaneously!!
Hi mr.pete nice to here seeing these grinders on a bigger scale, well we of course love the Tom's Thumb, that is large for us, but more our neighborhood, just watch your lathes ways, which you do well x 2 in your fine lesson. We do use Dumore motors on our Marshall lathes. Thank you for sharing this grinding on the lathe with us Lyle. Lance & Patrick.
Another pre-coffee morning mental meandering... because it depends on how accurately the grinder spindle housing is cast/finished... setting an alignment bar between centers and (with the cross feed all the way out) taking a measure,ent from the ends of the housing to the alignment bar? It would probably work better if the end of the grinder shaft were exposed, but they are sealed...
Not just for entertainment! I have a Dumore grinder, and a lathe, and while centers aren't on my list of things to grind, things like Morse tapers could easily benefit from a finish pass with a tool post grinder.
I use a small pneumatic grinder held in the tool post of my 15" LeBlond trainer now and then.. Recently I used it to open the hole in a new barrel bushing for my series 70 Colt pistol.. The barrel bushing is hardened and cannot be cut otherwise....Mike in Louisiana
As your doing your grinding, I hope you're keeping a weather eye on your shop vac. They have a habit of catching fire when used as a dust collector, especially grinding metal. Fortunately, you're not removing a tremendous amount of material so the risk is lower.
Did use the vacuum with a plasma cutter once, melted the hose in about 5 seconds, maybe less, was quite effective for the time it lasted, though...!!!! 🙄🙄🙄
@@pierresgarage2687 Buddy of mine is a hobbyist knifemaker. When he got his 2x72 belt grinder, he set his shop vac on fire once a week or so until he got a real dust collector. People forget just how flammable itty bitty pieces of metal can be.
I have one and I was trying to sell on craigs list for 300 bucks. It didnt sell so I decided to use it. The belt guard is the first thing to go. Have to very careful of all the grit and crud it gives off on the ways. I also have the dumore hand grinder too but no clamp. I will probably make one.
Informative and well thought out. Is that Tom-Thumb a dual speed? It looked like it had two different sized pulleys, but I'm not sure. Seems like it would be more versatile than a single speed. Also, when using your shop vac in that manner it's best to clean it out first, dampen the paper filter, and put about an inch or two of water in the bottom (if it's a wet/dry model) to prevent any secondary ignition of combustible materials that may be in it. When you're done with the operation, you want to clean the shop vac again. Like you say, "Better to be safe than sorry."
Great information as always Mr. Pete. Thanks! Especially enjoyed seeing the different grinders. Huumm.. (maybe I'll just build one) I think I have a new machining project to do.
The vacuum was a great idea. the wet towels are a good idea too. My question is...Instead of a wetting the towel with water, could you use some type of low flammability oil on the rags? Thanks again for the video. Loved it.
I know a man who had a 6" grinding wheel explode into his chest. He said it felt like getting kicked by a horse! Always give mine the ring test when installing!
Here I got a little model 44 with a burned motor, got to get a finding a suitable replacement for it, I'm thinking about a variable speed 500 watts brush less spindle motor... Pretty sure it would do well... For less $$$ than a new or rebuilt original motor.
Do you use the newer style quick change tool posts on your lathes? Have you done any comparison between the quick change and lantern style and do you think the quick change posts are worth the cost?
Just out of interest a question about spindles spinning at high speeds and the force called "presession" present in turning objects like spindles and chucks. Now its like the spinning object forces a posision in the air for itself(my words), you can search presession experiments, so I just wondered at very high speeds if bearing condition by design matters as much as one might think if forces like grinding is introduced slowly and mildly to the spinning objects-? CNC engineering developed tolls to be used at much higher speeds, would they went that direction for more accuracy sustainable apart from doing the job quicker-? Dynamic stiffness & Precession-----air bearings).
I am sure you realize that it is not necessary to dress the wheel flat, a radius or point will work as you are generating the angle off the compound. JIM
Hey Mr. Pete I have one of the sharpening tool holders you showed in this video. I got it for $1 at a sale and never knew what it was? It's yours if you want it as I don't have a grinder. Just let me know where to send it. Thanks, Gerry
My customer was using his angle grinder on his mower deck...anyhow the grinding wheel exploded...he had to go to the hospital to remove the shattered wheel from his neck and how close it came to his jugular....he now wears a mask with a towell wrapped around his neck.
Mr. Pete, Have you ever cut down lathe bed ways to shorten it? I have an Atlas TH54 10" that I'd like to cut down because it's way too long for anything I'll ever need and to save precious shop space. I'd like my lathe to have no more than a 20" center distance so I'm thinking of cutting it down. In your opinion will cutting the bed ways be ruined or likely twist or bend the ways making them useless?
@@mrpete222 Thank you for your response. Does it ruin the machines from functioning or for value? I thought about repositioning the back foot closer toward the center so I can mount it to a bench but a good part of the ways will be sticking out.
A project idea how about you make up a casting from a 3D pattern and build a grinder like one of those because there is thousands of us that would love to build a tool post grinder and if anyone could work out how it is you please
Hate to tell you Lyle , but you didn't grind the wheel totally ..... LOL It's a pleasure to see you work and teach the younger generation and old a dying trade of all the different topics ... Keep up the great work ...Cheer from Down Under
Hi Mr Pete, thanks for the informative video, I noticed you did not diamond grind the wheel all the way? a bit was left at the edge, was this on purpose? or just an error? So I have used the Dremmel method making my own mount out of steal of coarse and got good results. But i want to build a proper tool post grinder myself, i think ill have to do a video of that to share. but i don think ill make one as big and bulky if i can find suitable motors and spindles. or make a good spindle myself.
The cord isn’t safe on that grinder and with no belt guard it is a pure death trap. I would suggest you dispose of it properly by sending it to me! Lol
?!?! Why didn't you dress the whole wheel?! You seemed to miss big part on the end, resulting in the wheel taking a big chuck out of the point of the center at 21:36 and again at 21:58...
I saw that too. I think he just missed it while grinding. He should have noticed something was wrong though when taking the first cut and seeing the secondary grind area along with the massive increase of sparks. That is the crappy thing about working with a camera in front; its a lot easier to miss the obvious.
Mornings with Mr.Pete always the Saturday-est treat
Just spent 26 min of my saturday evening watching your video - and what a joy - as allways. Thank you.
R u serious??
All the pro people hates this guy badly
U must be a hobby guy
your point about eye protection is well taken! Many,many years ago went I first started in trade there was a fellow in the tool room who had lose an eye using a Dumore tool post grinder! Always use PPE!
Hi Mr. Pete: like the series, and especially appreciate your emphasis on safety. I would add that when I was a kid working in the oilfields of Texas (50+years ago) I was taught two things: NEVER put your face in line with the grinding wheel and NEVER grind aluminum, etc. because it gets embedded in the wheel and it may come apart at hi RPM. Looking forward to the next one about live centers. Thanks
When I was in collage we had an atlas Hercules in the shop I worked in. Great machine!
Shop vacuums are one of the best devices for home use in the last forty years or so. I would suggest that you fashion a metal collector for the grit to avoid the deterioration of the plastic collector. Or perhaps install a thin metal plate with epoxy inside the collector. An interesting video, as usual. Many thanks.
Once again good information shared. Thankyou.
It was interesting reading the text in the catalogue. It said one of the speeds available for the grinder was 9400 rpm. That's pretty fast.
Thanks, now I will use the grinder that came with my lathe, you do a great gob on the Safety too.
I just ground my first part on my 16” SB lathe; a hardened Walstrum no. 1 Morse taper adapter, (that was 15/16”, and I ground it down to fit my largest R-8 collet 7/8”). To align the grinder with the axis of the lathe and get the height right at the same time, I put centers in both the headstock, and tailstock, and that gave me alignment and height simultaneously!!
👍👍
As always great work. One thing though, when finished check your shop vac filter for burn holes or a smoldering filter. Lol.
Nice presentation as usual .
Awesome video
Watching in Alabama
I have a little atlas/craftsman 618. Fun little lathe, does almost anything i would ever want at home. That little Tom Thumb would be perfect for me.
Hi mr.pete nice to here seeing these grinders on a bigger scale, well we of course love the Tom's Thumb, that is large for us, but more our neighborhood, just watch your lathes ways, which you do well x 2 in your fine lesson.
We do use Dumore motors on our Marshall lathes.
Thank you for sharing this grinding on the lathe with us Lyle.
Lance & Patrick.
Just a little bit different spin on things. Good one, Mr. Pete!
Another pre-coffee morning mental meandering... because it depends on how accurately the grinder spindle housing is cast/finished... setting an alignment bar between centers and (with the cross feed all the way out) taking a measure,ent from the ends of the housing to the alignment bar? It would probably work better if the end of the grinder shaft were exposed, but they are sealed...
Thanks Lyle. Interesting video.👍
Not just for entertainment!
I have a Dumore grinder, and a lathe, and while centers aren't on my list of things to grind, things like Morse tapers could easily benefit from a finish pass with a tool post grinder.
I use a small pneumatic grinder held in the tool post of my 15" LeBlond trainer now and then.. Recently I used it to open the hole in a new barrel bushing for my series 70 Colt pistol.. The barrel bushing is hardened and cannot be cut otherwise....Mike in Louisiana
You gave me an idea on how to adapt one of my grinders to my lathe
Great video Lyle. Many thanks
As your doing your grinding, I hope you're keeping a weather eye on your shop vac. They have a habit of catching fire when used as a dust collector, especially grinding metal. Fortunately, you're not removing a tremendous amount of material so the risk is lower.
Did use the vacuum with a plasma cutter once, melted the hose in about 5 seconds, maybe less, was quite effective for the time it lasted, though...!!!! 🙄🙄🙄
@@pierresgarage2687 Buddy of mine is a hobbyist knifemaker. When he got his 2x72 belt grinder, he set his shop vac on fire once a week or so until he got a real dust collector. People forget just how flammable itty bitty pieces of metal can be.
That is an old dremmel love those domore grinders
Thanks
I have one and I was trying to sell on craigs list for 300 bucks. It didnt sell so I decided to use it. The belt guard is the first thing to go. Have to very careful of all the grit and crud it gives off on the ways. I also have the dumore hand grinder too but no clamp. I will probably make one.
It’d be a cool project to make one of these!
thanks for grinding this into my brain Professor, I need all the help I can get!
Informative and well thought out. Is that Tom-Thumb a dual speed? It looked like it had two different sized pulleys, but I'm not sure. Seems like it would be more versatile than a single speed.
Also, when using your shop vac in that manner it's best to clean it out first, dampen the paper filter, and put about an inch or two of water in the bottom (if it's a wet/dry model) to prevent any secondary ignition of combustible materials that may be in it. When you're done with the operation, you want to clean the shop vac again. Like you say, "Better to be safe than sorry."
Great information as always Mr. Pete. Thanks! Especially enjoyed seeing the different grinders.
Huumm.. (maybe I'll just build one) I think I have a new machining project to do.
The vacuum was a great idea. the wet towels are a good idea too.
My question is...Instead of a wetting the towel with water, could you use some type of low flammability oil on the rags?
Thanks again for the video. Loved it.
I know a man who had a 6" grinding wheel explode into his chest. He said it felt like getting kicked by a horse! Always give mine the ring test when installing!
Another nice job well done.
Here I got a little model 44 with a burned motor, got to get a finding a suitable replacement for it, I'm thinking about a variable speed 500 watts brush less spindle motor... Pretty sure it would do well... For less $$$ than a new or rebuilt original motor.
Thinking about buying an atlas toolpost grinder…
Lyle with style. Who can beat the Pete?! Another good video, my dear "bruthah".
lol
Another great video. Lathe work always can have a different spin on things. Ha Ha
Mr Pete... or "Mr. I have every attachment known to mankind for this lathe."
Do you use the newer style quick change tool posts on your lathes? Have you done any comparison between the quick change and lantern style and do you think the quick change posts are worth the cost?
Love the quick change. I think that would make a great video
Interesting as usual.
Mrs. Tubalcain's towels. You are incorrigible.
Thanks.
He forgot to use her toothbrush to clean the machine afterwards
@@jhbonarius I see what you did there... M.M.M.
@@jhbonarius Hard to pull the toothbrush off her hands while she's still brushing her teeth... lol
I picked up a domore tool post grinder,bigger than needed 3 horse 3 phase.
Hi Lyle,
It's easier to mount the Dremel flexible shaft attachment to the tool post for grinding.
You are correct, however the bearings on the dremel are not as tight as the spindle grinder.
Just out of interest a question about spindles spinning at high speeds and the force called "presession" present in turning objects like spindles and chucks. Now its like the spinning object forces a posision in the air for itself(my words), you can search presession experiments, so I just wondered at very high speeds if bearing condition by design matters as much as one might think if forces like grinding is introduced slowly and mildly to the spinning objects-?
CNC engineering developed tolls to be used at much higher speeds, would they went that direction for more accuracy sustainable apart from doing the job quicker-? Dynamic stiffness & Precession-----air bearings).
great video!
Mrpete222 I have a Dimond dresser tool I'd like to send you. I've learned a lot from your videos. Thank you.
Trenton
I am sure you realize that it is not necessary to dress the wheel flat, a radius or point will work as you are generating the angle off the compound.
JIM
And another GREAT video from our "Mr Pete".
Praise Jesus!
Hey Mr. Pete I have one of the sharpening tool holders you showed in this video. I got it for $1 at a sale and never knew what it was? It's yours if you want it as I don't have a grinder. Just let me know where to send it. Thanks, Gerry
What are you trying to hide with that tarp in the background? I bet it must be something interesting.
I am hiding a big mess
My customer was using his angle grinder on his mower deck...anyhow the grinding wheel exploded...he had to go to the hospital to remove the shattered wheel from his neck and how close it came to his jugular....he now wears a mask with a towell wrapped around his neck.
Thank you.
Thanks for sharing sir.
I would think the grinders that could also do internal grinding could work for grinding a three jaw chuck that was worn. Right?
I think I will be watching at sales for a grinder. Who knows. now that I know what they look like.
thank you sir
THANK YOU...for sharing. Enjoyable.
Mr. Pete, Have you ever cut down lathe bed ways to shorten it? I have an Atlas TH54 10" that I'd like to cut down because it's way too long for anything I'll ever need and to save precious shop space. I'd like my lathe to have no more than a 20" center distance so I'm thinking of cutting it down. In your opinion will cutting the bed ways be ruined or likely twist or bend the ways making them useless?
That is not something I would do. I would say that ruins the machine. What about the machines feet for mounting to the bench
@@mrpete222 Thank you for your response. Does it ruin the machines from functioning or for value? I thought about repositioning the back foot closer toward the center so I can mount it to a bench but a good part of the ways will be sticking out.
A project idea how about you make up a casting from a 3D pattern and build a grinder like one of those because there is thousands of us that would love to build a tool post grinder and if anyone could work out how it is you please
Tubalcain is the best.
Hate to tell you Lyle , but you didn't grind the wheel totally ..... LOL It's a pleasure to see you work and teach the younger generation and old a dying trade of all the different topics ... Keep up the great work ...Cheer from Down Under
If you have combustible stuff in the dust collector ( like saw dust) you migh spark a fire .
Hi Mr Pete, thanks for the informative video, I noticed you did not diamond grind the wheel all the way? a bit was left at the edge, was this on purpose? or just an error?
So I have used the Dremmel method making my own mount out of steal of coarse and got good results.
But i want to build a proper tool post grinder myself, i think ill have to do a video of that to share.
but i don think ill make one as big and bulky if i can find suitable motors and spindles. or make a good spindle myself.
Grinding sparks is very apt for me this week, a stray spark from my have grinder got on cardboard and the resultant fire destroyed my garage.
Mrs Pete s towels work best !
The cord isn’t safe on that grinder and with no belt guard it is a pure death trap. I would suggest you dispose of it properly by sending it to me! Lol
You would need one with a 24 inch wheel
Hey, Lyle! Am I first? Haven't been able to click fast enough lately!
?!?! Why didn't you dress the whole wheel?! You seemed to miss big part on the end, resulting in the wheel taking a big chuck out of the point of the center at 21:36 and again at 21:58...
I saw that too. I think he just missed it while grinding. He should have noticed something was wrong though when taking the first cut and seeing the secondary grind area along with the massive increase of sparks. That is the crappy thing about working with a camera in front; its a lot easier to miss the obvious.
Putting a Dremel on as a tool post grinder is for desperate men in desperate times!
Yes, about as effective as an electric toothbrush
Thanks Lyle. Interesting video.👍