Not the one I'm most proud but at least this one I can explain. I initial did it to help a friend who wanted to customize and sell bycicle bells. since most pr

Not the one I'm most proud but at least this one I can explain. I initial did it to help a friend who wanted to customize and sell bycicle bells. since most printing techniques are made for flat surfaces this creates an interesting challenge. The solution I eventually arrived at involves a pen plotter and a custom fixture. There's actually a article about it here: https://www.evilmadscientist.com/2019/bike-bells-with-axidraw/ https://www.evilmadscientist.com/2019/bike-bells-with-axidra... And by the way, the obvious way to produce them would probably using transparent stickers a heat gun an a coat of varnish but where's the fun in that.