A few key design flaws
This is a great little base in terms of rigidity and cupboard space. I don't, fortunately, need the wheeled feature as that part does have a few key design flaws which are.
1. The wheels are all fixed in terms of the direction they point in and this means moving the base backward and forward is fine but trying to turn the machine is a royal pain and leaves, on a painted concrete floor, nice black scuff marks.
2. The foot brake when level is unlocked to lock it must be tilted away from the end of the base. As the sander overlaps the base without table extensions (more so with) this means the end of the lever under the machine must be pressed down, not easy in street shoes, almost impossible in work boots.
A very odd (on behalf of Jet) feature is that the bolts for the base are supplied with the sander not the base. So make sure you know where they are if you want to buy the base later. They do fit into the threaded holes for the tables which is where I kept mine until I brought both the extension tables and base. Otherwise they may get lost in the odd and ends drawer which is a bit like a black hole and once something goes in it can never be found again.
S if you have kept your bolts and don't need the sander mobile, or just want to move it in a straight line and have very flexible feet this is a very good base.