They haven’t tripped me yet, and they allow the table to be moved on the few times I’ve ever wanted, but normality sits on the heavy legs.
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In case this isn’t mentioned in the video - the rule-of-thumb for casters is that each one should be able to hold half the weight of the load. So a 120# Glowforge, filter, and cart setup should have casters rated for at least 60 pounds.
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As Promised, the sketchup file that should explain a DIY retracting Caster System. This is a workbench that I will make (I’m teaching my sister-in-law woodworking and she made her own workbench. Once the class is over, I’ll be able to “re-purpose” the material to make the bench I want to be in that area.)
This system has been tested and it does work quite well.
Workbench.zip (190.6 KB)
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If they are swivel casters would they have to be attached to the outside edge of the legs? (or would stability be affected if they were on one of the 2 inside edges?)
By the way, when I first saw this topic I was super excited thinking this was a rotary axis for the GF, but then I was brought down to earth…
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Footmaster makes models that have an extendable ratchet to raise/lower the caster wheel, like the one in the foreground. Those work much better than the ones with the orange “handles” in this picture.
On edit:
I have the ratchet type on an 1100-lb CNC mill and the orange handle type on a 1600-lb CNC lathe. For objects that heavy the ratchet type is far preferable to my mind, but the orange handle type may be fine for something that weighs a couple hundred pounds or less, like a GF table…
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Note: The user formerly known as @bob3 is now @iliketomakestuff - first post edited for clarity. 
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