This is my first BUILD please help.

[DigiSoft]

OK if I have picked you up correctly you are going to make your own supported rail using the ally profile & chrome bar. First question would be what sort of equipment do you have access to because I would imagine you would really struggle to be able to drill & tap a length or round chromed hardened steel bar with DIY gear unless you already have your own workshop.

YES YES that is what I am trying to do.
D.C. that is not a solution because I already have the ball bearings.

I have workshop and I have big table drill and other tools. I don't have router and I can't melt aluminum :D
Please help :)

THANKS TO ALL!!!!