Archive of the former Yahoo!Groups mailing list: Homebrew PCBs
Subject: Re: SHARPIE PERMANENT MARKER ETCH TEST finer lines
From: alan00463@...
Date: 2016-11-12
I got a package of five "Sharpie Precision" precision markers from Staples. Also marked "Ultra Fine". The package contained two black markers. The other ones were green, blue, and red.
The black marker draws a line 1/60 in. wide,, or 17 mil.
Heating season has begun, so today I started boiling water to add moisture to the air.
HTH,
Alan