Crossbow bolt fletching for 1/2" shaft - spiralize/vase mode

prusaprinters

<p>I wanted to fletch some heavy 1/2" diameter crossbow bolts of approximate medieval design.<br/> Having no goose feathers on hand, I figured a 3d printed one could be a decent alternative.<br/> Upon searching I found a cool idea by Tal84: <a href="https://www.thingiverse.com/thing:3650087">https://www.thingiverse.com/thing:3650087</a> and designed my own version for a crossbow, where only two flights are used. I put a 3.6° twist into the design, as the heavy bolt will be going slower and intuitively I think a more aggressive twist will generate better spin for accuracy.<br/> The stl is solid, in order for it to work it needs to be printed with "spiralize outer contour" in cura, or "vase mode" in some other slicers.</p>