Re: [CAD_CAM_EDM_DRO] Using CNC mill to engrave

Hi All:
Dental handpieces are the greatest thing since sliced bread for all
kinds of hobby type stuff.
They cut smoothly, and are really easy to manoevre around.
Go to your dentist and ask if he has any old ones kicking around.
All the dentists went to push button chuck handpieces about 10 years ago,
and there are bazillions of old key chuck models gathering dust in drawers
all over the country.
If you can, get Midwest Quietair handpieces; they are nice because they have
very robust bearings in them, and can take a lot of abuse.
Get 1558 burs, (they are about $1.50 CDN apiece), and you can cut steel at a
pretty impressive rate.
How do I know all this?? Up until June of 1998, I was a dentist. Now I'm a
toolbreaker again and I'm a happy guy!!
By the way; if it hurts, you need a new dentist!!!

Cheers

Marcus
-----Original Message-----
From: alan_hantke@... <alan_hantke@...>
To: CAD_CAM_EDM_DRO@yahoogroups.com <CAD_CAM_EDM_DRO@yahoogroups.com>
Date: Thursday, August 16, 2001 11:35 AM
Subject: [CAD_CAM_EDM_DRO] Using CNC mill to engrave

>Hmmm...
>The post about dental drills got me to thinking..... My mom was a dentist
>and as a kid I used to have the old mechanical (belt) drill she had while
>in school. It was *great* for hobbies (model aircraft, etc). The modern
>ones are all turbine and turn around 300K at full torque; this is obtained
>by using 11 different stages in the turbine. It is no wonder they whine so
>much... but they only use about 30PSI or so. Amazingly, however, they are
>not that expensive. You can get a head for $250 or so. I imagine that
>they must run pretty darned smooth too or it would hurt like hell (wait...
>it DOES hurt!). The bits are usually carbide or diamond, I believe, and I
>wonder how they would work for the type of work (engraving, PCB routing,
>etc) we are talking about.
>
>Please excuse me if this group has already covered the dental handpiece
>usage....
>--Alan
>
>
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