How to Machine the PERFECT BALL in a BOX

1. I'm an optomechanical engineer and I giggle when machinists equate spotless clean with rubbing surfaces with their fingers. It's an interesting relative perspective. 🙂

2. Do you have a link to buy the arm that's holding your indicator at the beginning of the video? Or at least a brand/model number?

3. We did this in a Traub TNS-30/42 about 1993-1995 in brass…

4. The hardest part of this seems like making the jaws to hold the ball for the final op, and that was kinda handwaved with the 3d printer.

5. 3"..interesting…..this is a perfect opportunity to use your 3" tape measure…..where you can only tell if something is more than 3"… less than 3" …or exactly 3"….

6. Cool video ! how hard is this to actually get completely round and nice end finish ?

7. that surface finish when you were squaring the stock is amazing

8. As a machinist you should know that nothing is perfect

9. Hi any of you guys can tell me what toolpath can I use for this amazing project. I need help

10. "Using nothing but a 3 axis mill"

    What a humble and lowly piece of equipment you're using 😉

11. Whats the point of this?

12. How much?

13. Long time agao i learned to use this machines, but i never had an project awesome like this. Thanks for showing <3

14. Lol measuring with inches and bald eagles per washing maching. Americans ?

15. Cool. What was the depths of cut on the ball? feed and speed?

16. Built my ball and box separately, threw the box in the oven and the ball in the freezer. Few whacks with a mallet and bob's your aunty.

17. I'm try this on the weekend

18. A friend of mine made a pyramid in a pyramid on a lathe. Can you show how this works?

19. How about a 2 inch diameter ball in a 2 inch cube?

20. Dude!. Oh how I wish I had a teacher like you in high school!

21. I have never done machining, which now makes me realize I wasted my life because it looks cool AF, but as a carpenter and builder I see the same methodology applied. Achieving "squareness" and approaching a build with "forethought" like "okay my 6th side was holding the ball so how do I get the 6th side without goofing it up".

    I get crap from other workers I have worked with for being OCD. And when its all said and done their product is, in their words, "good enough".

    I've been hearing this for 30 years. I see I should have been a machinist. You all seem to understand perfection is a worthy goal.

22. Sorry, I was lazy; I just made a concave cutter (with hand tools/bench grinder) and just plunged it into a block of wood. The first was a ball in a cube, then I did a ball in a ball in a cube, and I think I managed a ball in a ball in a ball in a cube.

23. How do I buy that from you

24. How does this defy gravity? Gravity has nothing to do with it

25. this content is 10x better than some roided up guy telling us how important apprenticeships are.

26. If you face the top and part of the 4 sides, you have 5 sides square and parallel in 1 op. Flip it over and it's square in the vice. Just face off the new top and even up the sides to match op1

27. Now do it manually

28. Just make the box larger than than the ball duh.

29. Defy Gravity huh ??
    You can't defy something that does not exist ?

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