Practical guides written for people with a printer and a problem. No affiliate links, no filler — just settings, numbers and things that work.
Thin strokes, script fonts and the wrong print orientation account for nearly every broken letter. Here are the minimum sizes and settings that hold together.
Lithophanes fail for two reasons — the wrong photo and the wrong orientation. Get those right and the print settings almost take care of themselves.
Most 3D printed QR codes don't scan. The reasons are always the same three — contrast, module size and the quiet zone — and all three are fixable before you press print.