Fletching jig - Blazer 3.5deg Left helical

thingiverse

I liked the OpenSCAD jig, but wanted to tweak it, so here is what I came up with. The arms are standard other than the hole through the top, the idea behind this is to add a pin into each arm so the clamp will not come off. This makes the jig completely contained, so no worrying about loosing the parts once assembled, but this is optional obviously. The remix is done with the idea that the clamp will stay with the base and you don't have to insert the lid over the arrow to clamp the arms, you just raise the clamp from the base where it sits idle. I made provisions so it clears the vanes when raised, that is the reason for the odd star shape. The clamp has ramps so that even if the arms are splayed out, raising the clamp should close them as its raised, you don't have to close the arms then raise the clamp. I believe the clamp will also clear TAC vanes if you create arms for those, I allowed for ~9mm vane protrusion/clearance, this clears the blazers with ~1mm clearance. And finally the plug, this is friction fit between the locking feet of the fletching arms, this locks them in and provides more friction so they don't flop around, you may need to scale slightly to get a perfect fit or run them over some 400 sand paper to tweak the fit. Plus it looks better IMO, and looks are everything right.......lol This was built for standard diameter arrows, so if you use scad to build things for a different arrow size then you may need to tweak things, I have not tried other arrow sizes, so just wanted to put that out there.