Slingshot Band Tying Jig - Clamp & Hook

thingiverse

This is a tool for tying the pouch to a cylindrical or flat band rubber. There is another, more sophisticated design in which the hook is replaced by a mobile jaw. It consists of a body with a rotating arm that acts as a clamp to hold the rubber, and a hook adjustable in depth to hold the pouch and keep it stretched while tying. Necessary materials, in addition to the printed parts: - 1 M6-40 mm. cylindrical or hexagonal head screw (both body designs are available). - 1 self-locking nut M6. - 1 threaded rod M5-110 mm. - 1 M6 washer. - 1 M5 washer. - 1 M5 wing nut. - 1 of the sleeves used to splice the M5 threaded rod. In the market they can be of cylindrical or hexagonal type. - 1 nail 3 mm thick. Mounting: - Fix the clamp to the body with the M6 screw, nut and washer, leaving a little clearance for the clamp to rotate freely. - Cut the sleeve in half, make a hole through it of 3.5 mm in diameter, with a little inclination, as shown in the images. - Cut the nail 20 mm from the tip. - Insert the piece of nail into the hole in the sleeve and weld with tin/silver, or glue with epoxy. Make sure that the solder or glue does not stick to the thread beyond the nail, towards the inside of the sleeve, as if this happens, the threaded rod cannot be screwed later. To avoid this, a plug can be made from Teflon tape before welding or gluing. - Mount the threaded rod, hook, M5 washer and wing nut on the body. Usage: - The tool can be attached to the edge of a table with a small cat. - Pass the rubber through the hole in the pouch. - Lower the clamp to hold the loop made by the rubber. - Stretch the pouch until one of its holes reaches the hook. The stretch can be regulated with the wing nut. - Proceed to tie the rubber, near the pouch. Note: The photographs are from a previous version published. In the current design, the hook is below the grip point of the clamp, instead of above, and also has other small improvements.