Yahoo Groups archive

Homebrew PCBs

Index last updated: 2026-04-28 23:05 UTC

Message

First Negative developement Brd

2016-08-19 by kbyrne10@...

I finally have all the supplies that I need and need a question answered.

Supplies

Scotch Laminator

Office depot Black and white copier transparencies. Two copies of each experiment circuit.

Dry film bought in China

PH up bought on E-Bay

Eagle to Gimp negative

Dakta light bulb approx 12 in above frame.

Question? How long do I turn on light bulb for first experiment in developeing board.

If it fails to develope properly how much time do I add for next experiment?

What is correct procedure for this experiment to learn this aspect properly?

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.