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Subject: Re: Crossed rod hinge/suspensions v/s ball bearings hinge/suspensions
From: "Charles R. Patton" charles.r.patton@........
Date: Mon, 24 Oct 2005 09:02:50 -0700

Some suggestions for sources:

The Electronic Goldmine
part no. G961
is three carbide router bits with 1/8 " shanks for $2.  I've bought 
these in the past and they have very good finishes and the shanks are 
about 1/2 inch long.

If you're in good graces with your dentist, ask him for used dental 
drills (actually minature router bits.)  However be aware that these may 
only be carbide brazed to HS steel shanks (like the ones I got.)  But I 
guess that some may be carbide all the way.  I'd be interested if your 
results vary!

Look at part no. 8788A124
from McMaster Carr  1 1/2 in. long by 1/8 in dia. carbide drill blanks.  
$1.95 ea.  Many other lengths and dia. available.

Charles Patton

ChrisAtUpw@....... wrote:

>In a message dated 24/10/05, mark.robinson@............... writes:
>>ChrisAtUpw@....... wrote:
>>>      You can get 1/8" tungsten carbide drills (ordinary type) from 
>>> for $4.20 each. The one that I have is about 2 1/4" 
>>>long and half of that is usable shank.
>>>      I buy the printed circuit board tungsten carbide drills with an 
>>>1/8" shank for a bit under $4.50. I have searched several US websites 
>>>for these, but the only one that I found was digikey and they wanted 
>>>$7.55 each! The overall length is 1.5" and the shank is 0.9" long.
>>TIG electrodes might be worth a go too.
>Hi Mark,
>       The only TIG welding electrodes that I have used were tungsten metal 
>and they had a rough ground finish, not semi polished. They might be worth 
>trying out though?
>       Regards,
>       Chris Chapman


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