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Subject: Re: [Homebrew_PCBs] take off soldermask green

From: "leon Heller" <leon355@...>
Date: 2009-11-01

Red fuming nitric acid should dissolve it, as it is a resin, but it will
also dissolve the copper and the fibreglass resin, if you aren't careful.

Leon
--
Leon Heller
Amateur radio call-sign G1HSM