Improvised Reamer For Cleaning Printed Threads

thingiverse

Create trapezoidal thread reamers by yourself for cleaning plastic parts printed with trapezoidal lead screws is possible. Grind, turn, mill, or hand-file to make the reamer. Ensure safety precautions while grinding and wear protective glasses. Cut a short length of threaded rod and use a die grinder or file to create two spanner flats on one end. Taper the other end at about 5° beyond the thread root using a die grinder, lathe, or file. Create four straight flutes with a slitting disc, file, or milling cutter. Deburr threads and sharpen tooth edges for effective use. Note that this method is suitable only for plastic parts as most threaded rods are soft. The work is still in progress; disregard the .stl file if you can't print it.