... at the moment. Looking at the Exactoscale L1 chair I wonder if the foot of the C&L rail is too thick for the chair, and it's pushing the top of the chair out (it's floating in air, as the mountboard the rail is on isn't flat): 499_180817_220000000.jpg Here's an M1 chair from Shapeways, Frosted Extreme Detail: 499_180818_040000000.jpg And finally a set of tweezer's for putting the keys in, Shapeways Brass "print"- plastic probably would have worked, but this was a Christmas present to myself: 499_180820_080000000.jpg It makes my 3D modelling life easier, especially with more complex chairs, to have the keys separate. posted: 18 Jan 2018 16:32 from: Tony W Hi Richard. I had suspected that the C&L rail was too wide due to wear in the die, but having recently measured some samples found the overall width correct. My suspicion now is that the foot of the rail is too deep or does not fit the profile of the cut-out for the foot as the foot depth does look ...