Lotus Elise mini hard top clamp, Hess Mods.

thingiverse

This is a mod of RapidLotus' mini roof clamp. The Lotushardtops dot com roof I bought was slighly different shaped than an OEM roof, apparently. The STL from dustinsterks would not fit. RapidLotus made a mini clamp and it too would not fit. So, I modified that one to fit. The length of the "legs" is a bit longer and this one now fits fine. OpenSCAD source is included. If your roof is different yet, you can hack this up accordingly. Print on one of the sides. I print on the left side (without the version number) as you look at it as it would be oriented on the car. That way the nicer finished side faces the driver. Printing this way (on the side) will give a stronger object as well, as the layers are not being pulled apart by the forces of the roof lift. I used "supports where touching the build plate", 50% fill, ABS.