Unistrut trolley bearing for a panel saw

Trolley bearing for a length of unistrut. I could not find anything similar for retail anywhere. Can get a trolley for superstrut (and expensive at that) but not for unistrut.

Designed this for a DIY panel saw. It's been in operation for a little over a year now and has shown no signs of sagging or deformation. And if it starts, at this point I'll probably just print another set rather than go back for a redesign.

It uses good ol 608 skateboard bearings, a bunch of them, so all those b