weird ball bit

Liss · Jan 4, 2003

i have this bit.. dont' know from where..
its steel.. as far as i can tell..

and its like a ball..
with a stick on it...
it has edges (to cut) all over the ball so it looks like it can cut sideways........

can i use this and a drill press and mill out some channels in some
acrylic?

Sean Lindstrom · Jan 4, 2003

Sounds like a HSS Dremel bit. One inch shaft, about an eighth-inch diameter? If so, it'll snap under the load of drill press work, and won't last long at Dremel speeds (10,000-30,000rpm) on metal. The cutting edges need to bite, not rub, or it'll burn out.

EDIT: Oh, acrylic. Dremel speeds melt acrylic, but that bit in a drill press would be fine so long as you don't feed the work too forcefully. The side of a normal twist drill (near the root, for strength) would probably work better, though.

Volenti · Jan 4, 2003

does it look like this?

A normal (cheap) HSS router but will go through acrylic quite happily too (used them quite a few times for that)

Liss · Jan 4, 2003

yes.. it looks like that Volenti.. but abit bigger..

and i know its not a dremel bit...
so will i be able to make channels in the acrylic/lexan with a drill press?

Volenti · Jan 4, 2003

only one way to find out

give it a try in some scrap, at a moderate speed , like 800-1000rpm.

Liss · Jan 4, 2003

i do'nt have scrap.. hmm..

Liss · Jan 4, 2003

btw.. this is a cheap mastercraft drill press

Stedeman · Jan 4, 2003

It’s an etching type of bit, and it will clog up fast your best bet for cutting is a table saw or a jig saw.

Volenti · Jan 4, 2003

oh BTW, you can do this

with one of those ball bits and a high speed drill or die grinder.

Liss · Jan 4, 2003

will it look like that if i do it on acrylic?

cause if it is then i'm not doing it

weird ball bit

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