Case for CMMG 22LR Bolt with Rubber Protector and Slide Lid

thingiverse

Looking at the KShafer Bolt Case and it's existing remixes I wanted an option that included room for the rubber end protector like nikaboo did and took advantage of the lighter (and less material dense) design that augustlin's slide lid version presented. Using measurements from both models I originally expanded the channel and increased the length on the slide lid model with the measurements from the the rubber end model. Based on KShafer's description I opted to slightly oversize the model in my slicer at 102%, this proved unnecessary. There is a marginal amount of play that I expect that printing at 100% instead would take care of. Similarly not knowing what tolerances nikaboo put into the lid interface I printed at 101%. The lid engages with the track but can slide easily in and out and didn't stay in place the small nubs included in the original slide lid model were only .2 in height and were insufficient to tension the lid in my print. Additionally there were about 7mm of play along the length of the bolt holder itself, something I did not expect. To solve these problems in my printed model I created a friction fit plug at the rubber end to both take up the horizontal slack and to serve as a wedge to tension the lid. (With a total of 16-17 hours of printing between the body and lid I decided not to reprint for such minor and addressable issues) but modified these files with the changes. This exact file is unprinted but has the modifications based on what I learned after printing the original design. (I was unwilling to commit to another 16+ hour print when a simple spacer block could take up the slack). This model features the widened channel for the rubber protector, but is shortened to remove the horizontal slack, the lid has been modified as well for length. The tensioning nubs have been increased in size from .2mm to .7 for increased grip, and the holes in the lid which I found unnecessary I have removed. For print settings I followed KShafer's advice and printed at .16 resolution with 20 or 30% infill.