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  #1  
Old Mon 14 April 2008, 09:37
DocTanner
Just call me: Don Ross
 
Blue Ridge, Texas
United States of America
Small logo cut in alu - Blue Ridge, Texas



.050 bit
aluminum
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  #2  
Old Mon 14 April 2008, 11:05
domino11
Just call me: Heath
 
Cornwall, Ontario
Canada
Don,
That logo looks pretty impressive, considering the size. What gearing are you using on your motors? How was the aluminum to cut? What type of bit?
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  #3  
Old Mon 14 April 2008, 11:46
DocTanner
Just call me: Don Ross
 
Blue Ridge, Texas
United States of America
Domino,
the gearing is 7.2, with rails made on a bench grinder.
The bits are printed circuit board bits from Ebay.
I had cut a couple out of plastic laminate and just had to see if the MechMate would do aluminum.
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  #4  
Old Mon 14 April 2008, 11:47
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Is that coin about an inch in diameter?
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  #5  
Old Mon 14 April 2008, 12:11
DocTanner
Just call me: Don Ross
 
Blue Ridge, Texas
United States of America
Yes Gerald about 1 inch.
I have smaller bits order.

Your design allows small imperfections in the rails not to be a problem.

Last edited by DocTanner; Mon 14 April 2008 at 12:13..
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  #6  
Old Mon 14 April 2008, 13:10
smreish
Just call me: Sean - #5, 28, 58 and others
 
Orlando, Florida
United States of America
Doc,
Good to see you back in the post.
I concur, I have done some small aluminum (okay 1/2" thick bar stock 6061T variety) with multiple passes and all worked well. The MM had no problem with 1/8" depth passes w/ 1/4" spiral up Ti coated bit. Occasional spritz of "dry spray lubricant" shot on bit - but not constant.
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