Thanks for making this video. The explanation is very clear. I've wanted to make a Holzapfel geometric chuck for a while and watched a video about one many times. I always got scared by the gear trains as it looks complicated. After watching and understading your (this) video I watched the geometric chuck video again and I now realise that it is actually straightforward.
I really enjoy your videos, it looks like a labor of love. You have spent a lot of time with all the tooling you had to make to get that old mill working. Very Nice set up. One suggestion I would make. If you had more gears you could leave your index gears set up with 90/45 45/N (any two gears of the same pitch.) Then you would only have to change one gear, (the number of teeth you are cutting,) it would be a less chance of error and easier set up. Joe G. 🙂
Thanks, Joe! I agree with your comment, with one exception: you have to have a gear with tooth count N to make a gear with tooth count N. So, for me the only way to make a 37 tooth gear would be a tooth at a time on the vertical mill. That’s really what led me to the differential setup: I can make any tooth count gear (even, odd, prime number) with only even numbered change gears. Also, I just wanted to prove to myself I could make all this stuff!
I really liked your catch-pan. When cutting gears with coolant or oil the small chips always ends up where I don't want them. With a pan like that with a decent volume and the outlet high up, and maybe a baffle, I imagine 99% of the chips would be caught in the pan.
Fascinating, thank you for the lesson.
You are welcome!
Thanks for making this video. The explanation is very clear. I've wanted to make a Holzapfel geometric chuck for a while and watched a video about one many times. I always got scared by the gear trains as
it looks complicated. After watching and understading your (this) video I watched the geometric chuck video again and I now realise that it is actually straightforward.
Very glad it was helpful! Now I’m going to have to look up Holzapfel chucks…
**Holy Crap, that’s gorgeous!**. What a work of art!
@@thomasstover6272 Indeed. I'll be making mine out of birch ply and/or acrylic. Brass is just too expensive.
Hi Tom
Very nice explanation with a very nice accent.
Waiting for the differential mechanism 😊
@@shh8570 Thanks! Some of the later videos get into differential index and lead train design, if you are interested.
I really enjoy your videos, it looks like a labor of love. You have spent a lot of time with all the tooling you had to make to get that old mill working. Very Nice set up. One suggestion I would make. If you had more gears you could leave your index gears set up with 90/45 45/N (any two gears of the same pitch.) Then you would only have to change one gear, (the number of teeth you are cutting,) it would be a less chance of error and easier set up.
Joe G. 🙂
Thanks, Joe! I agree with your comment, with one exception: you have to have a gear with tooth count N to make a gear with tooth count N. So, for me the only way to make a 37 tooth gear would be a tooth at a time on the vertical mill. That’s really what led me to the differential setup: I can make any tooth count gear (even, odd, prime number) with only even numbered change gears. Also, I just wanted to prove to myself I could make all this stuff!
You are absolutely right, there are many combinations of gears to this ratio but they all have a 37 tooth gear in that ratio.
I really liked your catch-pan. When cutting gears with coolant or oil the small chips always ends up where I don't want them. With a pan like that with a decent volume and the outlet high up, and maybe a baffle, I imagine 99% of the chips would be caught in the pan.
There is an old shop rag inside the box as a filter…
Great video and thanks for the explanation. I hope to see more content.
More to come!