scratch engraver
Since auto level didn't worked for me i thought to make a scratch
engraver tool.that will automatically adjust the heights and pressure
according to PCB copper board surface.to make this work first i have to
paint copper clad boards surface with marker pen.then i have used a iron
nail as a engraving bit.i have built a tube that have the diameter of
the original spindle.then i used the chilipeppr to run the machine.
below is the result :
i'm planing to improve my idea with spring loaded tool.
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