Adjustable SMA torque wrench

prusaprinters

<p>Revision V2<br/> I found a stiffer spring that can be used alone and is easier to adjust. It was labeled #7 Compression 1-38 L x 5/16 OD x .041 AWG. With the stiffer spring I managed to break a leg off the handle so I revised the handle, pusher and adjuster design. When I print the handle I flip it over so it prints without supports. Using PrusaSlicer I put a modifier cylinder around the top leg area and increase the perimeters from 3 to 5. I use a small drill to clean out the pivot pin hole. I find that once the spring is loaded the pivot pin stays in place without crimping the end.</p> <p>Original<br/> A small adjustable click type torque wrench for SMA connectors. I used two springs, a 5/16" x 1-1/2" .02" and a retractable pen spring to get enough force to trip at 4 in-lb of torque. I used a finishing nail as a pivot. Printed in PETG. The tip was printed with 4 perimeters and 30% gyroid fill. The rest used 3 perimeters and 20% fill. The cal arm can be used to calibrate the wrench using a hanging weight or a scale. OpenSCAD is used for the design so it is parametric for other uses and other spring sizes.</p> <h3> Print Settings</h3> <p><strong>Printer Brand:</strong></p> <p>Prusa</p> <p><p class="detail-setting printer"><strong>Printer: </strong> <div><p>I3 MK3S</p></div><strong>Rafts:</strong></p> <p>No</p> <p><p class="detail-setting supports"><strong>Supports: </strong> <div><p>No</p></div><strong>Resolution:</strong></p> <p>.2</p> <p><strong>Filament:</strong> Prusa PETG </p> </p></p> Category: Electronics