Can you tell what materials and step to be used in making rails and.any obstacles? What do you call the metal thing of the rails?
Thanks

1. get the metal that you need.
2. cut it to the measurements
3. weld or glue it together.
4. wait till its done.
5. shred

Or if you have limited crafting resources or budget, go to a DIY store and have a look at the kitchen cupboard handles. Buy one, screw it to some wood for a base and you're done. Ghetto but perfectly serviceable. There's a great range is shapes too

Something like this (though you can definitely get cheaper)

http://www.diy.com/nav/rooms/kitchens/handles-hinges/rod___bar_handles

metal doweling or rods will work just fine

You get lots of tin foil wrap it up round pencils till it seems strong and make legs then the feet you wrap rubbers up in tin foil too and glue together with prit stick