blade shaft coupler for Cuisinart Smart Stick CSB-75(AD) stick blender

thingiverse

This coupler attaches the motor to the shaft powering the blade. Mine wore out and replacement parts aren't available for purchase. Hopefully, this information helps others too! I'd guess that PETG or ABS would be better suited for this application, but mine was printed in PLA and it's holding up just fine. The center hole is slightly undersized on purpose to ensure a snug fit. To attach the part securely, gently heat the metal shaft coming from the motor with a soldering iron and then tap it into place. The plastic will melt onto those ridges, which aren't visible in the STL file.