Bob needed some walker skis. I had printed some many times as the abrasiveness of the pavement and friction wear them out. I dug up the file and printed some that I had many times before.

This design was printed to fit some rubber boots that slipped over the walker leg pipes. The unit was held on by a screw, nut and washers.

Bob took these home only to realize that his system was slightly different. The pipe ends were a molded cup with a screw holding an insert for the internal diameter of the pipe. My first thought was to print some boots in Nylon that would adapt the the skis. I started that design project in Onshape sketching and revolving the shape without detailed dimensions. I called the file, BobBoot. When finished I thought, “why not just print the whole thing and use his inserts?” Here’s the result. Hidden is the fancy boss on the bottom of the cup that locks the insert from rotating and accepts a screw to hold it in place.

I added detailed dimensions and developed the boss to receive the insert. When finished I thought, “might as well add the ski!” With a quick rectangle and ski profile I swept the ski attached to the boot. Now the device is called the “BobBootSki.”

Parts were printed in ABS on Cat’sPaw (FF Creator).