I printed this and I thought it turned out great (it looked amazing), but when I placed it on the rail, the hanger part was more tight than I was comfortable with (in my mind it should be a very looks hang, no need to put any undo pressure on those carbon rods), so I printed it a 2nd time, scaling the design (hook depth only) to 103% or original and that came out swimmingly. basically no friction on the rail, but hangs nicely.