Printing 3D parts from Mcmaster, SDPSI, etc without paying a cent!

Picture of tinkered sdpsi pulley

Or this should be called… “How to convert proprietary 3D cad data into undamanged STL files without paying through the nose for expensive software.”   Edit 3/3/13:  Another great site with even more 3D parts available for download is http://www.bbman.com/.

  • Step one: Goto SDPSI (as an example) and click on a specific L timing pulley part number.
  • Click on STC parts link and “download 3D models”.
  • On new tab, select file format “step,  .stp”
  • Let the internal website software convert the file for you (takes 30 seconds) and click download
  • Open the downloaded zip file containing a stp file, such as “a_6a_4-10df05016.stp”
  • Open freecad and open the step file
  • On the lefthand side, click the part name under “unnamed”
  • Under the help menu there is a submenu selection tool.  Select “Mesh Design” and the top menu will change to include “Meshes.”
  • Select mesh > create mesh from geometry, and leave the value at 0.1 on the next screen.  Hit enter.
  • Now on the left hand side, click “mesh”
  • On the meshes menu, select export mesh.  Select “Binary STL.”
  • You can now process this with Slicer, Tinkercad, Sketchup (with import library included on this site).
  • Print free parts!!

This entry was posted in Uncategorized by Michael Armani. Bookmark the permalink.

About Michael Armani

I am a motivator, energizer, think out of the box-er, maker, and philosophic. I am PhD Bioengineer by trade, graduated from the University of Maryland, College Park, and completed my degree in partnership with the National Cancer Institute.

Comments are closed.