Given the interest I received for the MegaRail 80 and MegaRail Z, I decided to add a few more members to the family of profiles.

Shown from left to right are MegaRail 320 (only partially visible), MegaRail 160, MegaRail 80, MakerSlide (shown for scale), MegaRail 40, MegaRail 20 and MegaRail 10.  For simplicity, except for MakerSlide, all profiles are scaled versions of each other.  For instance, MegaRail 80 has screw ports that take self-tapping M6 screws; MegaRail 10 takes self-tapping M0.75 screws.  MegaRail 80 weighs about 3.3 kg per metre, MegaRail 320 weighs about 53 kg per metre and is available in 2,400 mm, 4,000 mm, 6,000 mm and 8,000 mm lengths (same as MegaRail 80, only scaled up, for simplicity).