[sdiy] For breadboard lovers...

[Ullrich Peter]

Hi!

>I take it that you two are using Photo Resist etching?

Yes. 
Years ago I built an exposure unit but then I got an old commercial exposure unit 
with vacuum pump that works better as the films will be pressed to the board and 
so the images are even sharper - so the 0.5mm are no big problem.

My exposure unit looks like this one (but an older version):

http://www1.conrad.de/scripts/wgate/zcop_b2c/?~template=pcat_product_details_document&zhmmh_area_kz=&product_show_id=551635&gvlon=&p_back_template=deeplink&p_load_area=$ROOT&p_artikelbilder_mode=&p_sortopt=&page=&p_catalog_max_results=20&cachedetail=#

but for the beginning and only single sided PCBs a simple "sun burner" would work:
http://www.janson-soft.de/seminare/dh7uaf/eagle/print/belichtung.jpg

Some people build thier own version with an old scanner:
http://www.dl1dow.de/inhalt/selbstbau/belichter/d_belichter_main.htm

Ciao
Peter