11 stage high voltage bobbin

thingiverse

You can edit and split it in half to print it in a different orientation however you want to make it stronger or whatever. I wound 1900 turns of 0.3mm wire on the bobbin, use any wire you want just multiply it out, find out how many turns you can fit on each stages etc. 0.16mm layer height. I just print it standing up with supports, holds up good. PETG Transparent of course. 11 stages, 36mm for any cores. (25x25x100 ferrite square rods used, 36mm rods can be used, any kind of cores. at least 80mm long) Oh yeah, I didn't bother making a hole in the bobbin for the coil wire at the start, because I just use a tiny flats screwdriver and create a hole there, it's easy.