Simple cleat. Can handle up to 14 mm line.
Two 6mm fasteners required. Depth of hole from shoulder to base of cleat is 20 mm. The fastener should be at least this length plus whatever surface one will fasten to and enough for the bolt. In my case 30 mm. (see images)
No support required while printing in current orientation. Use many walls, at least 10, for maximum strength, this cleat is design to handle mooring and sailing loads but use at own risk. No infill.
I use this as my bow mooring on a small sailboat, also the foresail tack and bow line keeper while underway.
Fair winds!
The author hasn't provided the model origin yet.