Ive recently done the T-track thing, my post here may give you some ideas. I’ve found the T-track from orangealuminum.com to be the cheapest date in town. I went with two 2" pieces of MDF, followed by 3", then 4" on my bed. I haven’t used it a ton yet, but it looks like it’ll be a winner. I’m also considering putting 1/4-20 threaded inserts in my MDF strips because I have a lot of clamps that work that way, plus I have tons of extra inserts laying around. I also plan to make/buy some t slot nuts so I don’t always have to use inverted bolts, again I have tons of 1/4-20 hardware. Mine:
Hope this helps!
Dan