That's not practical at all! How many time did you loosen the three screws to advance the cutter to work piece? 100 times maybe!! Because the center of rotation has to be fixed right under the work piece all the time.
@@thewarlordscalling6537 You are correct that the center of rotation moves when you advance the cross slide, but you are not correct that it matters. The swing of the tool covers 180 degrees of the ball's circumference, and you advance the tool (and its center point) until it is directly plumb with the rotational axis of the part. Other ball turner designs require that you start on center in both directions and advance just the cutting bit. This one operates more like a hand graver that is constrained in its movement. David didn't invent this, as he mentions, and he's only one of countless thousands of home shop machinists who have made one over the years. I assure you we aren't all so foolish as you believe. You simply didn't understand the way this is used differently from other designs (especially the variety which is based on a boring head mounted on the tool post).
I worked in a production machine shope when I was young. Always wondered how a steel ball could be made! They only taught you what they wanted you to know there! Thank you for teaching me! =KL=
It's almost painful to watch such a small lathe and machinery, but when aligning that rectangular stock... fuck me, that is one master trick. Perhaps the finished product is a masterpiece. I'll be machining a super huge one for my lathe. Thanks for sharing!!! You've earned my humble subscribe
New here, nice to be on this channel because you are making some great machine tools. A ball turning tool post for the lathe is a great and very handy accessory to have.You did a great job thank you for sharing this even if it was done nearly the same as you share with a small deviation, Lance & Patrick.
Thumbs up hell no that deserves a lot more than just a thumbs up for your first time making one I thought it came out really professional looking that tool post would sale for over $ 80 easily
Hey this is so terrific i built one at the Rockinham mens shed. I turns out a really nice knob for a handle. first one turned out great. So good Terry and David will be making another one. I only took 3 weeks to make it approximately 6 hours
That is amazing thanks for sharing, a great jig to get all around the ball aswel whereas I have seen some that are too big and would crash with the chuck if not careful
VERY cool idea with the post/center out of the tail stock to center the 4-jaw. Why is it that when I see someone else come up with an awesome setup....It is always...GENIUS! why didn't I think of that?...Anyway, have fun, thanks, G.
fascinating video with many great practical tips (loved how you used the rod to center your square work piece..). I'm desperately looking for info as to how much clearance one should leave between moving parts.. can you point me to any material on this topic?
put a relief cut down side of tool holder or grub screws will burr it up never get it out make another tool holder with two carbide inserts facing both ways you can cut concave and convex
Well done, although can you possibly detail sizing and the reason you’ve scaled that way next build video? It would allow viewers to visualize actual finished dimensions much easier and determine whether or not to build one myself
copied the idea and used it to make many bead roller dies. I did engrave a scale on the sliding tool post and mating base for quick setup for specific inside or outside radius. Thank you for posting.
Thanks Virginia. The radius is limited by the distance between the bar stock and the bottom of the tool holder, which in turn is governed by the size of the lathe you make the tool for.
hey david, nice work, i really like it! theres one thing that might be unclear: when you make the tool holder, you take the height of the lathe center and mill it to that exact height... but, if you place your insert on top, it will be above the center? a solution would be to take 2 of the inserts you want to use and shim the tool holder in the toolpost up for marking the thing, that would give a dead on result when the insert is mounted?
great video, I never had much use for the ball turning attachment until you said about the compression fittings. Thats something that would be invaluable with the projects I do, so a ball turner is now on the list of stuff to defenitely make, lol.
Awesome video. I have been wanting to make one of these for my small lathe for quite some time. Yours is the most straightforward design that Ive seen. One question though. How did you affix it to the lathe carriage? I saw the four bolt holes. Do those line up with holes on your carriage?
Ahhh Ok then your carriage has T slots in it. Mine doesn't. It's ok though. I can use what you've done and just modify it. I won't need a base plate like yours. My carriage has a round boss on it already that sticks up like the one you machined into your round part I'll just mount right to that with a thrust bearing underneath or something along those lines. Thanks for the reply.
How is this held in the cross slide. Could I add a part that would fit to a t-block. That way you could just advance the tool into the work and this would be faster, or is my thinking cloudy on this.
Great video, you wouldn't have a list of material sizes for reference would you.. looks like something I will be building in the near future. I appreciate your efforts making this video, thank you.
Only one question. what material is used to create this ball turner? I really like this project and i hope to see more of these in the future. Keep doing great things
Just to Clarify I never saw You Smoke Anything I swear - Hahaha! It was just a general statement about turning Videos I've watched ! Was wondering if it was Dull cutting tools or something Else?
