PCB Heatbead for Home Etching

by WarHawk-AVG.
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2 layer board of 7.89x7.89 inches (200.41x200.41 mm).
Shared on September 8th, 2016 03:47.

PCB Heatbead for Home Etching by triffid_hunter, published Sep 7, 2011

http://www.thingiverse.com/thing:11305

I saw prusa’s excellent heated bed, but the dimension was too large for the blank stock I had available, and there were too many narrow traces for an easy home etch, so I designed a different one.

Dimensions are 200x200mm, hole centers are 190mm apart.

Design resistance is 0.95 ohms. Etch from 1oz (36um) copper to get this resistance.

Gives 150w from a 12v source, and consumes 12.5A.

I’ve had my bed up to 140°C before, and didn’t want to take it higher for fear of cracking my glass or damaging the FR4 PCB material.

2 layer board of 7.89x7.89 inches (200.41x200.41mm). $311.25 for three.

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