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Homebrew PCBs

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Message

Re: homebrew laser plotter

2006-06-30 by loco_labs

Hi,
My name is Michael and im from Melbourne.

> Have you tried the dremel tool to mill
> fiberglass PCB ?

I have tried engraving with a 60degree bit into the fibreglass board 
by hand and if going from the edge its likle butter, but it takes 
some force to pierce the copper because the bit wasnt intended for 
drilling. Im hoping the dremel will be good enough for basic smd.

as for the sticktion, one idea i had was; you see where on the older 
carriages of printers/scanners they had bronze guides that slide 
around a steel rod, what if there were a few holes drilled into the 
bronze around the diameter and a small pump would supply some oil/air 
under pressure into the holes. then the fluid should slowly leak out 
around the rod and hopefully it floats on a pillow of oil. or even 
pressurised air.

I have seen some precision grinders that used air compressor for 
frictionless bearing.

problem is its easier said than done.

And when i get some time ill sort out my progress and put it on the 
internet for all to see.

-cheers

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