I was not happy with the Sherline W.R. Smith T-Rest, as it is not foldable. There is a selfmade foldable/flip-over version mentioned on the Sherline page: https://www.sherline.com/wp-content/uploads/2018/10/002_cw_tip.pdf
My solution for this problem uses most of the original Sherline T-Rest parts. I only made a new pedestal base and pedastal.
Original Sherline T-Rest
My foldable T-Rest, folded up.
My foldable T-Rest, folded down.