Open beta for the 556k & k+ variants in the HubTN.4 series. HUB as well as 3/4x16 versions are included. Lot more info in the assemble instructions.
v2 Update: I found a small ring of missing material on the underside of the 556k+ CORE, HUB file. It's only 2mm deep so not a total deal breaker if you have already printed it as the HUB adapter will extend far past the area. The v2 zip file has it updated.
v3 Update: Step files for Sleeve personalization was requested
v4 Update: Big improvement on the HUB threads, corrected the bore size
v5 Update: Small improvement to HUB threads; should be the last update for them.
v6 Update: Thickened all sleeve files by 1mm. This has been initially tested and is confirmed to work.
LBRY Tags: hubtn.4; 556; ftn.4; fosscad; 3d print