I have the mobility kit for my 18/36. It works great and adds a bit of weight as the assemblies are cast iron. The kit does require extra "length" once attached (if space is a concern).
I have a Jet 1642 and just used some double locking casters (stem type).
Never had an issue. This also put the spindle height up to where I needed it.
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Well, all sorts of ways to do it. The double locking casters like on the Jet, don't seem to be in the way for turning if you slide the headstock down to the end of the lathe for bowl turning like I do. The ones for Laguna look to be seriously in the way, but I did one demo on one and shall we say, "I could get used to it." I don't like to move my lathes around. The reason is that if I move it, I have to relevel it. I did do a demo once where they bought the lathe in from a store room onto a gym floor. One foot on the lathe was left a bit shorter than the others, and they drove a cedar wedge like used in carpentry for shimming out doors and windows, and drove it under the one foot that was short. That worked really well. I do have outlines on my concrete floors for where each lathe is supposed to go so if any of them start to walk around, I can move them back to where all 4 feet are solid on the ground.
robo hippy