Linear Bearing Y Axis Carriage for ToM

ToM Y Axis Carriage for Linear bearings LMB6UU (3/8")

This is really just a little project that I've been fiddling with over the last few months when I have a moment to spare.
Purely for my own enjoyment (yes, I know, I should get out more), but you are welcome to try if you wish.
I'm sure there are a whole raft of engineers ready to tell me that this is wrong in so many ways and I look forward to being enlightened by their candid observations and everyone's improvements & modifications.