N Scale T Shank Couplers v4

thingiverse

These couplers are version 4. They are meant to replace the Rapido C shaped ones that come on most rolling stock. After printing I've found it best to sand the back part of the T off to help with fit and movement with the spring. I have a 0.4 nozzle so the design cannot be made any smaller and still print. I've used these with Bachmann E-Z Mate couplers, Atlas Accu-mate and some Micro Trains and all have worked fine in my yard. I have them on both locos and rolling stock. I don't have big curves or inclines, I'm not sure how they will do on those. Please comment if you use these and what your experiences are.