1/16" drill bit won't fit a 1/2" chuck

On Monday, May 22, 2017 at 10:26:36 PM UTC-7, mike wrote: \

That's only the tip of the iceberg. Half-inch drills often don't rotate fast enough for those small bits anyway. That 1/16" bit won't work well (on stainless, for instance) if it doesn't go at least 2000 rpm. For a half-inch drill, 300 rpm is good. So, what's the speed range of the lithium drill kit? 1600 rpm max?

I have two Ryobi 1/2" drills, both will close on 1/16. I love the combination of compact drill and 1/2" chuck.

I can't remember exactly why, but I have a hand drill collet that I've cut off the end of the plastic handle, exposing enough metal to fit into a chuck. Maybe you could do something similar with a precision drill holder. Those frequently come with a selection of tiny bits for about $5.

-jsw

Well, You could use an X-acto saw, although it would wear the blade (their blades are really soft). You could reshape an old X-acto blade into a skiving tool, Put an old drill shank in the tubing and hold it in a vise for the procedure. To fashion a skiving tool (my own word for it) you use a bench stone and make the X-acto blade like a tiny chisel blade. It only takes about 30 seconds to reshape the end of a worn-out blade. Then, you run the blade down the brass, using the vise jaw as a guide. It will take

Wish I could show this being done, it is easier to show than describe.

Jon

Assuming you have a metal lathe (this is r.c.m.) you could drill a

-jsw

Sounds like you need to buy a pin chuck, 3rd item down on this page

Wrap copper or steel wire around the shank. I do it all the time.

Worked perfectly. thanks, mike

Get a 1/4" chuck, mount it on an arbour, and chuck it in the half inch drill. It will make it clumsy, but a half inch drill is WAY too clumsey, and way too slow, for a 1/16" bit anyway.

I think I smell a troll- - -

Hah, that was quick! I modify a lot of X-acto blades to carve circuit board material, odd plastic things, etc. Kind of my go-too tool for special things. Glad it worked for you!

Jon

I second that, but would use 3/8 to 1/2" stock, not 1/4".