I have made two boards with what I called a “captive plate,” where the 3D prints are 2-piece and U-shaped with a channel for the plate. This one was the first. Aluminum TKL-like, and so snug the print had to be glued back together when it started to delaminate. PLA plastic is also a pretty rigid plastic in the short term, so yeah, this one’s a finger-killer. The second captive plate design feels much better, using a softer plate material and designing in a little slop. The other two TKL-likes with those same plates also feel better, one a sandwich case with Box Navy, the other a top-mount with lubed browns. Keyboards are weird. 
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