I would use a piece of 3/4" plywood for the base, and bolt the stand
and casters to plywood. Should hold up well.

i

On 2009-03-26, SteveB wrote:
I have a large commercial sewing machine, a Singer 111W155. It has a base
with the treadle, and a large motor. I would guess it weighs about 130#.
The legs come down straight to big grommets that sit on the floor.

I want to put two pieces of half inch thick by three inch wide flat bar
across the bases front to back, mount them to the bolts holding the grommets
on, and have them extend out so I can put swivel casters on it to move the
machine around better. This is going to improve the width so as to make it
more stable, but not the length.

How much flex would be in the flat bar? The flat bar would extend past the
current edges of the feet by about four inches. I think the flex would be
minimal, and that it would hold, but wonder if I should weld on some
diagonal brackets made out of simple rods. I could weld them on, but then
it would be difficult if I ever want to remove the wheels. I could make
them to bolt on, but that requires more work.

How much flex?

Steve



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