1.25" Coupler Breech for Marshmallow Blasters

thingiverse

Update 10/16/19: Small update, added some space to the hinge to adjust alignment, changed the "tooth" that snaps into the blaster to clear just a bit better but it needs support now, and added some grooves for z seam alignment to make printing cleaner. There's only one step file now for the 42.2mm version and then an F3D file that covers all three sizes and variations and has some sketches premade for easy ID adjustment like cutting sketch10 downwards to get 42.3mm or 43mm ID. The absolver version may get some adjustment later on. Update 5: Uploaded new files with another slightly different ID for fitment options for the 1.25" fittings. Also reuploaded all previous files with some naming updates. Update 4: New files with smaller ID breeches have been uploaded, including steps for modifying. Files names have changed accordingly and I'll outline them below. Update 3: After getting ahold of more 1.25" fittings, it seems that there can be some variance in their OD. I'll be uploading an alternative breech shortly with a slightly smaller ID so you can choose depending on the fittings you have on hand. Update 2: New version of the breech added just for my Nerf 7 Shot Absolver Shell for 1.25" PVC Fittings that has cutouts in the breech to hold the capped version of those shells up against the blaster and needs a looser fit. Update 1: Initial release with three versions of the breech, one for each ID size, plus an absolver fitting for use with the Nerf 7 Shot Absolver Shell for 1.25" PVC Fittings. Files: - marshmallow_43ID_1-25in_breech.stl - The piece as seen in the pictures, 31mm breech length. Aside from the locking tab all other angles are 45° minimum for easy printing. 43mm ID for loose fit. - marshmallow_43ID_1-25in_breech.step - The same piece as the stl above in step for easier editing. Has all the chamfers and fillets as the ready-to-print version. 43mm ID version - marshmallow_42-3ID_1-25in_breech.stl - The piece as seen in the pictures, 31mm breech length. Aside from the locking tab all other angles are 45° minimum for easy printing. 42.3mm ID for tighter fit. - marshmallow_42-2ID_1-25in_breech.stl - The piece as seen in the pictures, 31mm breech length. Aside from the locking tab all other angles are 45° minimum for easy printing. 42.2mm ID for tight fit. If you're interest in an absolver fitting for this breech, check out my Nerf 7 Shot Absolver Shell for 1.25" PVC Fittings that the absolver breech is made for, either for swappable shells or a dedicated shotgun breech.