Bi-Fold Closet Door Track Wheel Guide

A simple track wheel guide replacement that should fit on most bi-fold closet doors with a spring loaded guide mechanisms. 

I made the bore slightly larger so that it is (hopefully) more universal. I checked 3 different bi-fold doors in my house and each of them had a different mechanism. I opted for a stationary guide wheel instead of a rolling wheel but the bore for the model can easily be converted in your slicer to through-hole with a simple negative modifier cylinder.  

If your spring loaded shaft is smaller than the wheel bore and you are lazy (like me) you can just make a small roll/fold of masking/painters tape, wrap it around the end of your spring shaft, and push fit the guide into the wheel (see red arrow in image above.) This is super quick and simple and was more than adequate for me. The bore on the model itself should be very simple to modify to your needs in Fusion360 (or your program of choice.) 

I suggest printing at 0.25 - 0.3 layer height, 3 walls, 3 top/bottom layers, at least 20% infill, and with ironing enabled. Print upside down, no supports necessary! I printed mine in PLA and it has held up for over a year so far. You could use something stronger but honestly it takes like 3 minutes to print and costs a fraction of a cent, so I'm not too concerned with wear and tear. 

If you found this model helpful, please consider liking or leaving a quick comment. The positivity is greatly appreciated! <3