Longworth Tube Divider

thingiverse

So this laser cut tool is a work in progress but the central part is a based on the principle of a longworth chuck and when the two discs are rotated the bolts/jaws move inwards and outwards and self centre. It means you can place a tube inside or outside of the jaws and then rotate it or index it through any divisions of 60 (the numbered gear teeth). It means you can make equidistant marks around a tube... Useful for marking positions of fins for model rockets etc! The drawings are here in svg format with all the stroke widths set at 0.02mm for vector cutting on a laser cutter. All holes and slots are designed for M4 hardware (the longworth chuck jaws are longer M4 with some knocked up 3d printed spacers). I am still experimenting with the best setup for this and plan to 3d print some larger washers for under the chuck etc. But it's fun to play with as it is!