Homebrew PCBs

Adam Seychell wrote:


> Those diamond tile cutting blades are relatively smooth compared to a 
> toothed blade so if your finger happens to brush passed, you'll just 
> loose a layer of skin. 


I misread the description at first, i didn't realize the so inexpensive
materials you used to do this. If there was a competition for who make
the best cut for less money you definitely won.

> One possibility I didn't think about is a finger jammed where the
> blade travels down through the table top opening !
> 

Your machine will be safer with a clamp for the pcb. Just something non
flexible above the draw slide with rubber facing the pcb. As long as the
draw slide, hold with a hinge (?) or so at the jig end so it can open to
place the pcb. To cut you would just hold tight both parts with one
hand, outside the table and move it forward. For a simpler alignment
just make the a larger base on the slide, 1 or 2 mm apart from the disk,
so you can align it just from placing the pcb.

> I'd think a CNC machine would be too time consuming to use for doing
> just a few cuts.

True. Your last shown board, beside you never show the other side, is
definitely a plated thought hole board, rare on homebrews. Although the
impressive work on design, imaging and etch, the thermal vias have some
hand drill misalignment. The cnc is your last step to absolute
perfection!

Simao