Drilling through handwheel to add a grip

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Forum topic by Tyrone D posted 06-17-2012 06:30 AM 1217 views 0 times favorited 1 reply Add to Favorites Watch
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Tyrone D

314 posts in 1750 days

06-17-2012 06:30 AM

You may have seen my last thread on a Rockwell/Beaver lathe I just bought.
I have a question regarding the handwheel and drilling through it to put a grip. I want to add a grip to it like the one pictured:

Of course I’d make the handle with my new(old) lathe. This is for the tailstock.
What drill bit would I have to use? I have a drill press and a small vise.

Thanks for any advice.

-- --Tyrone - BC, Canada "Nothing is ever perfect, we just run out of time."

1 reply so far

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Mickey Cassiba

312 posts in 2448 days

#1 posted 06-17-2012 10:11 AM

Tyrone, the drill you need depends on the hardness of the handwheel. This is pretty easily determined by a scratch test. You mentioned having a drill press, so I assume you have a set or two of twist drills as well. Using moderate pressure use one of your drills and attempt to scratch the handwheel (prefereably at the location you intend to drill). if the drill will scratch the handwheel (it should leave a nice ‘cut’ on the material) you’re good to go. If not, you’re going to have to go to a harder drill. Base material, heat treatment, and plating all factor in here. High Speed Steel drills will cut most materials, although TiN, or carbide may be required. Hard materials such as Stainless Steel (unlikely) will require low RPMs and high feed pressure to avoid work hardening. Above all, keep your feed rate high enough to produce a good chip. Light pressure will create heat, which will dull your drill, and harden the metal directly ahead of the drill point. Remember to break your chip(by slightly retracting the drill) to avoid a long chip which can snag and cut you(damhikt)
Good luck.

-- One of these hammers oughta fix that...

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