Add wheels to your lack so you can just push them around any floors without lifting it. You also can stack these on top of each other (download other's design), and have the bottom most with the casters.
Or you could have fun with your lack outdoors with these casters. Move with styles.
The cover are provided to protect the lack's bottom feet from being slowly chipped from the bolts mounting the caster.
The size of the slots are 8mm diameter
These models don't have any tolerance compensation added. Please adjust “XY compensation/offset” on your slicer setting
The author hasn't provided the model origin yet.