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  #1  
Old Wed 03 April 2013, 23:09
The Youngin
Just call me: Jason
 
Santa Clara (CA)
United States of America
Cutting wrong measurement

Ok,
So my mech mate is running very well. The only issue so far is that the cut is short ever so slightly. Tops 1/16 over 48 in (calipers show near perfection)

I've ran the steps per calculation, Still off ever so slightly....

The bit also does not end smooth every time (primarily on rectangles)

It produces a small lump at the start point. Way worse if I run lead ins.

I'm extremely frustrated,
And ideas would help,

Jason
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  #2  
Old Wed 03 April 2013, 23:14
MetalHead
Just call me: Mike
 
Columbiana AL
United States of America
Specs on your machine? Motors? Router? Size of your table?

Pictures, Logos?
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  #3  
Old Wed 03 April 2013, 23:16
sailfl
Just call me: Nils #12
 
Winter Park, FL
United States of America
What software did you use to create the Gcode? What size bit are you using? What software are you using to run the MM? More details are needed.
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  #4  
Old Thu 04 April 2013, 01:48
danilom
Just call me: Danilo #64
 
Novi Sad
Serbia
If you have marks on start point and its larger with leading then you have some mechanical slop in system, check pinions or belt drives, check v-wheels

and of-course show us your MechMate
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  #5  
Old Thu 04 April 2013, 19:53
Red_boards
Just call me: Red #91
 
Melbourne
Australia
My fixes were:
Check bit (Z-axis) is vertical to table
Tighten Z rollers
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