I move my 22in Blackstone in and out of my garage and got sick of carrying it. I ordered some casters from Amazon and then designed and printed these to put in the end of the legs.
Since the legs are angled out it required these to be angled as well or they wouldn't spin correctly.
I printed on my ender 3 pro with PETG at .2 with 20% infill.
I used a rubber mallet to tap them into the legs and then used a wrench to spin the caster into it. The “short” edge should be toward the middle of the stand to allow the caster stem to be vertical
Casters used: https://www.amazon.com/dp/B09GFDSRMD but will work with any 3/8 stem 1.5in or less in length
The author marked this model as their own original creation.