Think & Tinker, Ltd.
P.O. Box 1606, Palmer Lake, CO 80133
Tel: (719) 488-9640, Fax: (866) 453-8473
Sales:, Support:

SkypeMe at
Return to FAQs Matrix Dry-film Developing

Questions about:
  1. In the Reference Stack you mention the importance of "breakpoints". I am not quite sure if I understand this. Please provide a brief explanation of this concept.
  2. I am using a spray on photoresist to sensitize my PCBs. I followed your instructions on development. I have made my own developer and can see my circuit on the board, I then attempt to etch this board but nothing happens. No etching orrurs. I am using Ferric Chloride as a solution. The etchant works because on an simple untreated clad board so I do not beleive that this is the problem. Do you have any idea what is going wrong with my process

Don't see your shop

Established 1990

On the web since 1994

Payment Processing
Sales: 1-(719) 488-9640    Tech Support: 1-(719) 488-9640    Fax: 1-(866) 453-8473
Copyright © 1994 - 2014 Think & Tinker, Ltd. Updated 2/13/2014 8:36:55 AM