Puretch™ description

Puretch is a biodegradeable, negative working dry film photopolymer. It has the highest resolution possible with a dry film; the thinner the film the higher the resolution. Puretch was originally marketed by Cape Fear Press to artists for the use of fine art photo etching but it is originally designed for PCB manufacturing. It is easy to use with non-industrial techniques and is available in quantities ideal for the DIYers.

Puretch™ features

• thinnest photopolymer film on market
• 15 micron or 0.6 mil thickness
• highest resolution etch capability
• 1/1000 inch lines and spaces
• yields consistent and predictable results
• easy to apply and etch
• non-toxic and safe
• water based processing
• wide exposure latitude

Puretch Instructions ~ Troubleshooting Tips

Developer is not included with film. 100% Sodium Carbonate is the developer and can be bought at pool and spa supply houses. It is a common PH raiser. Buy only 100% sodium carbonate AKA soda ash. Due to strict shipping regulations, we do not sell sodium carbonate.

Negative Working Photopolymer means that areas of copper that are not exposed and covered with a black line will etch away, leaving the circuit path in the clear areas of the art work. Make sure you prepare art accordingly. This may require inverting the black and white before printing transparencies.

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Stouffer 21 step guide
Establish perfect Puretch exposure times easily with the Stouffer step guide. There are many different ways for exposing plates. There are an abundance of different exposure systems and processing techniques. The one constant is the step tablet. Use the step tablet as a benchmark for all exposures to achieve accuracy and repeatability.
Click on guide for instructions.

$9.00 includes shipping & handling in USA
$10.50 includes shipping & handling for International orders