Making a Table Saw Fence

Hi All,



I'm going to make up a table saw and figure i need to get the fence sorted before i make the rest.



I've searched "Fence" and done heaps of reading and like the idea of the Biesemeyer clone fences that people have made up.



Can anyone tell me if you can buy the Cam handle part of these fences separatly? So in post 49 of this thread http://ift.tt/1otIxNk i mean just the cam and and the bits its bolted in. Then i can just weld this onto some square tubing and right angle as shown?



I really don't want to attempt making a cam from scratch :(



Otherwise, are there cheaper ones of these available so i can just get some extrusion? Standard T-Square For Cabinet Saws, Bandsaws, Contractor Saws - Fits 2X3 inch Guide Rails | VerySuperCool Tools - Woodworking Tools



Thanks