Lyman Expander Plug Stop Collar

This is a replacement for the lock ring. This works with RCBS seater plugs and Lyman "M" type expander plugs. The locking ring screw is an M4 x 0.17 screw thats 16mm long.

I used 30% infill for this but would probably advise you to use more. If it seems like its gonna break from tightening the bolt then you may need to print it again with more infill. Other than that whatever settings print well for you are what you should use. The orientation its in is how it should be printed.

!!!!!! UPDATE !!!!!!
My lock ring is starting to break after tightening and loosening only a couple times. Therefore, I DO NOT recommend printing with only 30% infil to avoid this. I also will probably go back and modify this to make it a little fatter.

!!!!!! ANOTHER UPDATE !!!!!!
I have made a fatter lock ring and I also added a marking on top to make it easier to track how many turns of the plug you've made if you need to adjust your setting. Its the "V2" one