Author: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Sun, 03 Aug 2014 11:38:32 -0400
Over the years I've tried etching boards with various methods. I have never gotten a good looking trace. Whether the trace area is cleaned and painted on, or photo sensitive, the edges are always irr
Temp, chemicals (Typically Ferric Chloride IIRC), chemical dilution, agitation: All according to directions with the same results. I finally gave up. Kind of straying a bit, but since we're building
Author: Mike Fahmie via TowerTalk <towertalk@contesting.com>
Date: Sun, 3 Aug 2014 09:28:07 -0700
It's been a looong time since I've made my own boards, but I just pulled one to check it for the qualities you seek. They look acceptable! My technique used spray on photo resist, contact exposure t
I made quite a few back in the late 70's early 80's with my employer then. Out of convenience I always silk screen printed the pattern on a well cleaned board blank using the same ink used for making
Author: Bryan Swadener via TowerTalk <towertalk@contesting.com>
Date: Sun, 3 Aug 2014 14:23:08 -0700
I used negative etch resist, with boards I coated myself. I used a vertical etching tank w/ a heater and aerator (aquarium items). That kept the etchant active and circulating/mixed. My etchant was a
Back in the day when I was training high school electronics shop teachers we used a variety of methods to produce PC boards. In general, the results were very good provided the student followed the i