Homebrew PCBs

If you do it the same way you make a sign, ie, cut the vinyl and
weed it on the backing as intended and then transfer to the copper
and acid etch rather than sandblast, it doesn't take long and is
not too hard.

You cannot do small shapes or holes, though. I had to modify the
layout of my boards so it was just simple rectangular shapes and
not small pads connected by narrow traces.

I could have done smaller shapes, though, if I'd not been using
really old vinyl and an old dull blade. ;')

You'd be surprised how small some vinyl cutters can cut. However,
the thick sandblast resist vinyl/rubber must use a shallower angle
blade and therefore is limited in how small a shape it can cut.

Steve Greenfield

--- Randy Knutson <ken_ryder@...> wrote:
> 
>  Brian:
> I forsee that way being extremely difficult! Even if it worked I
> would think you could only do simple geometric shapes because of
> the nature of vinyl. Very creative however!
> 
> -Randy Knutson
> 
> 
> What if you take and cover a board in vinyl sign material, cut
> the board 
> design out on the board and remove what you do not want.  Then
> sand blast 
> the board with a fine medium to remove the excess copper.



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