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Old 26th Feb 2016, 8:28 pm   #15
G6Tanuki
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Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 8,923
Default Re: Marking out panels

I've used an old ball-point pen! The Tungsten ball will cause a very slight slight 'dent' in the surface of aluminium if you use enough pressure when marking spots or ruling lines. You can then centre-punch where you want actual holes.

The tungsten-ball rulemarks can - after drilling/punching - either be sanded-away with Wet&Dry production paper, or will disappear under a misting of acid-etch primer.

The same works on Perspex: one of my better front panels was built using Perspex - I sanded the rear-face to a matt finish using Wet&Dry then used 'reverse text' Letraset [can you still get that?] on the rear face for the labelling. Edge-lit with a few ultraviolet LEDs it looked rather good!
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