Helix RH clamp for BPE Pro arrow fletching jig (may suit other jigs as well)

thingiverse

This precision fletching clamp is engineered for arrows up to 6.1 mm in diameter and compatible with the BPE Pro fletching jig. For target shooting or hunting, thinner arrows are preferred, and this design accommodates vanes up to 2 inches long, such as the Blazer. It applies a precise 2 degrees of right-hand helix to the vanes, which enhances flight path compared to offset fletching. I created this clamp because it was challenging to adjust to the exact center position of the arrow and required adjusting different distances on the front and back of the clamp's position. With this design, both the front and back are set at equal distances, ensuring precise alignment. To set up the clamp easily, place an arrow in the jig, attach the clamp to the jig's magnet, loosen the distance adjustment screws, and hold it upside down to allow gravity to align the clamp with the arrow. Once aligned, slowly tighten the noobs while readjusting if necessary until completely locked into position. Print Settings: Printer: Wombot Exilis Rafts: Doesn't Matter Supports: Yes Resolution: 300 micron or less Infill: 20% Notes: It is recommended to use CraftWare 1.14 to generate the G code, as it produces easy-to-remove support structures. Post-Printing Requirements: Ensure that where the elastic touches the clamp has smooth edges; if not, file these corners to round them off. Construction: For the metal plate on the back, you can use steel plates thicker than 1.5 mm or 1/16 inch. I used a 2.5 mm plate cut from a right-angle bracket. Make sure the metal plate is flat and free of twists. You can adjust the clamping force by selecting different elastic lengths, numbers, and types for the clamp. Use D-loop material, fishing line, or other usable threads to pull the elastic through. With this clamp, you can fletch up to three vanes on an arrow shaft. If using the BPE Pro jig, set the nock angle to 90 degrees and the vane positioning locks to 0, 120, and 240 degrees. With the BPE Pro, you can get up to six vanes on an arrow, but this design recommends only three due to potential interference with existing vanes. Usage: I prefer fletching closer to the nock as shown in the photos; however, you can add a spacer or extension to increase the nock distance from the vanes. Once a vane is glued in place, open the clamp by pinching the levers together and lock it into position using the Clamp lock. Recommended arrow rests: I recommend drop-away arrow rests or prog-type launchers like the Spot Hogg Premier or Infinity. Both come with blades that can be installed, but I have not tested them with a blade type. The prog launcher allows me to adjust the distance between them.