Old style bombard oar holder rare design not produced anymore Gratis Model Cetak 3D

design by concrete printer, pictures taken on site at budapest studios

old style paddle holder for older bombard inflatable dinghy boat. this is a drop in replacement for the older style bombard oar holder, but is designed to be much stronger. the original piece is injection molded and only around 1,5 mm thick. this replacement part is 6 mm tick and has an integrated m4 stainless bolt in the stem for added strength, as the part is prone to split at the stem and the ring shaped section.

part list:
- 1 piece of stainless steel m4 bolt with hexagonal head, 40 mm long threaded section and 43 mm length over all
- 2 pieces of washers with an outside diameter of 11.5 mm
- 1 piece of m4 bolt

printing
it is best to use a tougher material as pla as this part is structural and is subject to great loads while paddling. a good choice would be petg or tough pla. nylon would be great as well but could be a challenge to print as the part requires support under the stem.
100% concentric infill, a high flow multiplier ratio and high temperatures paired with slower printing will make the part stronger.

post processing
remove the support, file blobs, insert the m4 bolt with washers and a bolt, and tighten the bolt.