Measuring arm

thingiverse

The Seca model 220 is a vertical ruler for measuring a patient's height in a clinic like the nonprofit I work for. The arm that folds out to measure height (goes above the patient's head) on the old ones in my clinic has a weak point that over time will get work-hardened and break. Since the clinic doesn't have money, I drew one up in Sketchup and printed new ones for the clinic. Because it's longer than my Mendel's print area, it's in two pieces that need to be glued together with an ABS/Acetone slurry. I figure other poor nonprofits might also have need of such things, so I post the file here in the service of the Greater Good. Instructions Printed in white ABS, 240C hot end temp, 110C bed temp, 0.2mm layer thickness, 3 perimeters, 40% infill, no support. Glue the two pieces together with an ABS/acetone slurry, exact proportions not important, but about the consistency of white glue. Lay the two pieces on a piece of wax paper on a flat surface with the bevels facing each other (one up, one down). Paint the slurry on the face of each bevel, and press them together, being careful to keep them lined up straight. Leave them to sit there overnight (at least 10 hours for a good solid joint). The holes in the ears may need a little fettling to fit the short nubs that they fit on to. A small file is great for that. **I got it to work with no trouble in PLA also, but if your clinic turns off the A/C at night in the deep south (or tropic areas), ABS would be a better choice, as the PLA one I made warped straight away in the heat.