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Old 08-10-2007, 02:20 PM
 
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Bill's second Lithophane with a twist...

I was cutting a lithophane the other day and after finishing the rough cut I broke my 0.031 ball nose bit after just a couple of passes (lower right hand corner of lithophane). Last night it dawned on me that my five dollar 45 degree V-Groove bit might work. (the ball nose cost $40 and is not available locally) So I tried it using the G-Code for .031 bit... and Eureka!!!! It works!!
So because I am too cheap to throw out a 1/2 cut piece of Corian I have discovered that I can cut the lithophane with a 45 degree bit with the settings for a .031 bit, but at a higher speed AND it looks better too. The detail is much finer with the V bit than with the ball nose! I need to find a 20 degree V-bit next...
What do you think?
Bill Schober
Pine Grove, California
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Old 08-10-2007, 03:05 PM
 
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Nice work, keep us informed of your trials with the 20 degree bit. I also do litho's with expensive bits.

Brian
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Old 08-10-2007, 07:05 PM
 
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I am cutting a new Lithophane without the rough cut using the 45 degree V-bit only.
So far it is cutting perfectly...
The text file is nearly 40 MB!
It has far more complicated details.
I will post it tomorrow.

Bill
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Old 08-10-2007, 07:50 PM
 
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Buy me a Beer?
Litho's are definately on my list of things to do before I die Nice work again Bill.

Russell.
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Old 08-10-2007, 09:40 PM
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what was the settings used? cut time etc.?

Joe
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Old 08-11-2007, 10:51 AM
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Very nice detail. So far, I've roughed with a 1/8" ball endmill and finished with a 3/64" ball endmill. I've been thinking about getting a 1/32" or smaller ball endmill but maybe a v-bit would be better.
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Old 08-11-2007, 11:11 AM
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That looks great!!!! And Joe2000che already ask my follow up questions.
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Old 08-11-2007, 02:12 PM
 
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A lithophane without a roughing toolpath on 1/4" corian!?!
Bill
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