Crutch Bottom Replacement

The old bottom to one of our crutches broke off. We needed to recreate the flexible bottom quickly so I used Rhino3D to design something simple and used TPU to print this model on my Prusa MK3S.

The inner diameter is slightly less than 23 mm to fit the model of crutches we have called the “GUARDIAN QUIK-FIT." 

This model should be printed in a flexible. The higher the infill the more rigid the print becomes, so I suggest starting at 15% infill and adding more as needed. 

I added a sliced gcode file from PrusaSlicer 2.9.0 for Sainsmart TPU at 15% infill and 0.30mm DRAFT layer height for faster printing with a standard 0.4mm nozzle. 

Future versions could have many more improvements: examples - a better grip texture on the bottom, chamfered and textured edges, a tapering interior diameter decreasing towards the bottom for an even tighter fit and adhesives safe for metal and flexible filament bonding to more permanently affix the printed replacement bottom to the crutch. 

Disclaimer: Your mileage may vary with this print in use. Please make wise and deliberate choices when testing this print before allowing anyone injured to use it. Safety first!