Had two issues. Wouldn't turn at all as printed, probably due to a print issue. Also was about a millimeter too small for my peep hole. Rather than reprint I just shaved of some material with a knife and now it fits perfectly and turns with only one finger.
A small gripe I have is that a sliver of light can be seen through the gap, might remix and angle the ends of the sliding pieces to fit together and block all the light. Not a big deal overall.
Great model though! Much better than the rest of the peephole covers on here.
0.4 nozzle, 0.2 layer height
Increase wall thickness in slicer to prevent weird infilling in small areas.