Sorry for the late reply... first time I've had a chance to get it out.
Pics here:
https://photos.app.goo.gl/7b2nhU5eG3bks2Qz6The 3D-printed parts were only in PLA, so they've actually withstood a number of trips (including into salt water) better than I expected. Have yet to experiment with ABS, but have a roll there that I might try to make these parts up with shortly. You can see how the PLA has started to warp/bend on the angled feet.
3 x 3D print pieces:
- the angled "feet" that just slip over the front legs - no fixing required for those, they stay on by themselves.
- The drain plug "plugs" that fill up the drain plugs and help prevent the seat from moving around.
- A "sleeve" that fits into the plastic rear leg mounting holes, so that I can then use the smaller diameter (silver) aluminium posts that locate into the drain plug holes.
I think this design places fairly low stress on any part of the Hobie - the rear bar that goes across the back of the seat takes most of the weight and spreads it across a fair distance of the Hobie seat base.