Re: gEDA-user: Do it yourself PCB's via heat toner transfer.

[Karel Kulhavy <clock@twibright.com>]

On Sat, Nov 06, 2004 at 04:27:38PM +0100, Christian Treldal wrote:
> Hi
> 
> Inspired from an earlier tread about pcb's in printers, I will share the
> method i am using with others.
> 
> Here are a link to a manual in plain danish; but the pictures should be
> international;-)
> 
> http://www.sandcastle.dk/Artikler/Printfremstilling.pdf
> 
> 
> 1.Print the layout on Epson glossy inkjet paper with a laserprinter.

Do transparencies work too?

> 2.Clean the board with soap and steel wool.

Does underwater lapping paper suffice too?


> 3. Let it dry.
> 4.Tape layout to pcb. You may place layout at the table, pcb on top and
> then apply heat to back of pcb then the paper will stick to pcb.
> 5.Apply heat. Temperature on max.(cotton)

Should the paper lie on the table or should it be held in the air?

> 6.When paper turns brown, remove iron.

If the whole assembly is lying on a table, does the table turn brown too?
Is it necessary to use a heat-resistant table?

> 7.Place pcb and paper in cold water to paper disintegrates.

This reminds me the drilling template technology I am using on Ronja mechnaics.
A template is scissored out, glued on the chunk, the chunk then milled,
after it the chunk thrown into water and retrieved after couple minutes.
The paper is thrown away easily.

An example template:
http://ronja.twibright.com/drawings/twister_box_t1.png

Cl<
> 8.Peel paper off pcb.
> 9.Do your etching.
> 10.Remove toner with steel wool.
> 
> I hope this would helpful to someone. The method seem to be foolproof as
> long as you make shure that the PCB are clean
> 
> -- 
> Best regards
> 
> 
> Christian Treldal
>