From 051083487715f5ef0d73a448f4d0e90ccb05dc58 Mon Sep 17 00:00:00 2001 From: Mark van Renswoude Date: Sun, 25 Nov 2018 13:43:08 +0100 Subject: [PATCH] Updated etching (markdown) --- electronics/electronics/pcbfabrication/etching.md | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/electronics/electronics/pcbfabrication/etching.md b/electronics/electronics/pcbfabrication/etching.md index c1314c6..7af1b5c 100644 --- a/electronics/electronics/pcbfabrication/etching.md +++ b/electronics/electronics/pcbfabrication/etching.md @@ -3,3 +3,16 @@ [[Home|/home]] ► [[Electronics|/electronics]] ► [[Circuit board fabrication|/electronics/pcbfabrication]] ► Etching the board ___ + +**Prerequisites** + +* [Copper board with photoresist applied](/electronics/pcbfabrication/applyphotoresist) +* [Ferric chloride](/electronics/bom#chemicals_ferric-chloride) +* Sponge or brush +* Gloves + +## Etching + +I prefer to pour a small amount of ferric chloride in a plastic container and rub it on the board with a small piece of sponge or a brush. This usually takes 10 minutes depending on if the ferric chloride has already been used and the temperature, but allows you to monitor the process closely and focus on the unetched parts. In contrast to dipping the board in a bigger tank, this tends to etch from the inside out. + +If you're going to do more than the occasional board, look up better methods. \ No newline at end of file