Aluminium u-profiles are quiet cheap and I like to use them for a lot of different cases. Eg. using them as a cable channel. Mainly it wasn't handy to fix / screw the u-profile onto a surface if the U should be up For this reason and because i didnt find cheap mountings in a tool store I decided to design a small tiny holder for 10x10 u-profiles. Also working with Makerbeams.Best print results with supports and depending on the calibration with a raft.