# Minimum EAGLE trace width for PCB etching with glossy paper and a cloth iron

What$$`$$s the minimum widht and clearence that's etchable using a photo paper and an iron? I've heard using too small clearence might mess the ink resulting in shorts. I want to have 20V@400mA, will 8mil of width and clearence work for such voltage and current, and will it be etchable?

• It would be fairly easy to make a test pattern with a range of trace widths and clearances, transfer and etch and see what works well and what's too small.
– user156429
Apr 3 '20 at 17:13