Homebrew PCBs

Hello,

Have you tried "Vellum" paper? Heard that it works well.

Joe

On 2/16/12, storan4wd <bob.balderson@...> wrote:
> I usually make PCBs with Riston dry film and artwork from an Epson D92
> inkjet.
>
> Unfortunately, the inkjet can't cope with 0.5mm LQFP (edges are too ragged
> especially on diagonals + there's too much sputtering at high resolution
> 2400dpi or more and it won't print with black ink only at high resolution so
> opacity is not satisfactory).
>
> So I bought a Samsung Monochrome Laser ML-1860. (£40 from Dixons UK) It puts
> the inkjet in the shade - its 1200x1200dpi resolution easily produces the
> artwork I need; on transparency OHP film LQFP pads match up perfectly, large
> areas are opaque and 10mil track is unbroken. (For toner transfer people, a
> quick test with magazine paper came out very well - err.. make that
> jaw-droppingly well!)
>
> The only downside is the transparency film; both types of laser OHP film
> I've tried (Clarkes Stationers "el cheapo own brand" and Black Diamond
> 100micron Laser/Copier OHP Film) both buckle more than I would have expected
> making contact exposure unhappy.
>
> I did try printing on paper and using oil to make it translucent but the
> exposure times are too long compared with film + it buckles slightly also.
>
> Anyone in the UK got a suggestion for a really stable Laser OHP film please?
>
>