Reply by crank49

I generally use all four locking if I have any locking. Like I put none on a scrap bin, but depends on function.

If I can afford them I use double locking, wheels and swivel. Depends on value of project.

I’ll use two double locking swivel and two locking rigid for the most stability.

-- Michael :-{| Diapers and politicians both need to be changed often; and for the same reason.