Homebrew PCBs

I tried it, but can't get good density on OHP.
Sb. reported good results if i remember correctly, beeing able to peel the  
plastic right off.

BUT, if you look at the silicone paper discussion a while back it is much  
what you want.
Basically you spread some RTV silicone, high temperature variety, with a  
squeegee on a piece of ordinary paper, let cure.
This will allow you to make nice black transfers with no soaking etc. (can  
just be pulled off).

I had no opportunity to finish my development of this method, i'm quite  
sure it can be used for transferring resist, but so far i have some toner  
density/pinhole problems with it. (the etchant goes "through" it in  
places). When using paper this does not happen (not sure if it is the  
coating or something else). Anyway, the silicone paper transferred stuff  
looks fantastic and i use it for legend and panels and stuff. At some  
point i'll look into it again for resist. The paper can be re-used, since  
all the toner comes off but it can also be cleaned with acetone.


ST


On Fri, 18 Nov 2005 23:09:42 +0100, matt clement <buckeyes1997@...>  
wrote:

> I was wondering if people use the toner transfer method with the clear
>
> laser print transparency sheets??  I like the ability to see through
>
> the film for ligning up dual layer boards with a few key drill holes
>
> for alignment.  Simply line up the holes with the pads on the clear
>
> sheet and iron on.  I have tried it with copier transparency sheets
>
> and got okay results but never tried the laser printer sheets.  My
>
> guess is they can take much higher heat than the ones for copiers.  I
>
> wondered if one sheet could be cleaned with Acetone and reused a few
>
> times??
>
>
> Anyone have any thoughts or comments?
>
>