Making a set of mill buttons

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Doc's Off Topic

6 ай бұрын

A simple little project and tool that everyone should have...

Пікірлер: 23

@StuartsShed 5 ай бұрын

A useful tool - and you got through it and got it done. I need to make a pair - a little something for the weekend I think. Possibly holding the balls with V blocks and using a smaller end mill may have gone better. Thanks for posting the video. 👍

@docsofftopic8130 5 ай бұрын

Mount so your cutting force is directed into the fixed jaw… and soft jaws if doing them from hardened steel.

@bostedtap8399 6 ай бұрын

Great job, useful tools for the shop. Thanks for sharing. Best regards John from the Black Country UK.

@rosswalker8256 6 ай бұрын

Nice work, I will be putting these on the list to make

@kensimolo860 6 ай бұрын

It looks like your mill is out of tram - the backside of the cutter cuts when it passes by.

@docsofftopic8130 5 ай бұрын

Nope, 0.005mm length of travel in either axis.

@ls2005019227 6 ай бұрын

What inserts & spindle speeds did you use? Nice work- I would have expected grinding to be a little easier.

@docsofftopic8130 6 ай бұрын

The milling body came with the mill and not mentioned on the making list inserts are TPMN160308 carbide. I think they are Mitsubishi but will need to check speed wise I don’t recall but low end of the high range speeds *I think*. I will try to include this information in future videos.

@jackdawg4579 6 ай бұрын

interesting idea. I wonder if a little block with a hole in it to accept a round headed copper rivet might do a similar job and offer more grip, although the rivet itself would be probably only be good for one, or a few uses.

@docsofftopic8130 6 ай бұрын

Would work, much like using some brass rod or thick al wire. But these will out last me soooo just need to make sure I don’t misplace them lol

@37yearsofanythingisenough39 6 ай бұрын

When I made them I just took them to the disc sander and flattened a spot in about 2 or 3 minutes. You just need a flat to prevent indentation of your movable vise jaw…..that’s all.

@docsofftopic8130 6 ай бұрын

More fun this way though and real easy to get a near matched pair. ;-) but yes I do agree if needing it quick and simple just grind the flat.

@y-notforge8913 6 ай бұрын

..now i get it! it took me until the end to figure out what you were doing. Good work Doc...!

@docsofftopic8130 6 ай бұрын

It was such a neat trick when I saw Joe Pie use it that I had to make some…

@tates11 6 ай бұрын

So you simply copied prezzos recent video. The reason for the flat is to prevent dents in the vice jaw which will transfer to future parts. Yet you held the balls against the jaws and putting a dent in them! Use a nut or a washer to sit the ball in, no flat required.

@sidetrackmetalworks2058 6 ай бұрын

Great reminder for some work holding. I often forget about using the ball technique. I know its a day late and a dollar short, but I have a photo of a workholding solution for holding a ball in a vise, on my channel. It is a bit more work, but it really locks them balls down. Thanks for the video!

@daprof7417 6 ай бұрын

In which video does that photo appear?

@thigtsquare950 5 ай бұрын

A match pair… Wouldn’t it be better to have a match triplet? You’ll have the 3 points required for a surface. Bore the soft jaw at 1/3 the diameter and chamfer. That has more contact surface than the dimple you make and is less aggressive to the clamp. (Adjust the size of the hole according to the thickness of the material)

@docsofftopic8130 5 ай бұрын

It would have but given the condition of the balls I figured it wasn’t worth the effort. Next time though if I can get some 25-30mm balls that are new I’d defs be up for it.

@marley589 6 ай бұрын

What are the flat faces for?

@docsofftopic8130 6 ай бұрын

Keep the ball from moving, depending on geometry they can get squeezed out if left spherical. Second into minimise damage to your vice jaws.

@marley589 6 ай бұрын

@@docsofftopic8130 I see what you mean about damaging the vise jaws. Did you damage yours too? How would a matched pair work on a rough casting? Did you wreck the insert edges cutting hardened steel? Did you consider holding the ball between two nuts to protect the jaws? Or maybe use one nut and no flat to hold a casting.