If you are using 6mm mild sheet to cut the profile, do you intend to "stack or laminate" the thin layers to get your complete width rack of 12mm? Or something special?

No Sean I don't, I will not laminate, I would do a case hardening (0.5mm) on this and use it as it is.

Hope you realise it won't be straight?

http://www.thefabricator.com/article...g-on-the-level

That's understood - G, even on case hardening it would distort, its the way it will be clamped in place to iron it out the secret of using it - will share once done.

Now for gear...??
 

Back to post #75, I was asking for some alternative rack source then SSS !
Finally, I'm getting SSS one's !!

BUT, as for gears, what brand you guys are using ??
I've got some from Boston and another one (initially from McMaster, but can't remember the brand).
Out of curiosity....and...say...a "scientific" survey....what other brands is being use here...WITH good to great results (accuracy ans wear) ?

Thanks in advance ;)

browning.

Tks...I have forgot about them !
Was this one used on one of yours ?

yes.....Browning Gear
20T and 35T with 7.2 : 1 gear box

20T on the Z
35T on the x and y