LohringMiller
Well-Known Member
- Joined
- Jan 25, 2017
- Messages
- 872
Well, my last set of 3D printed sponsons failed the stress testing. I did hit a buoy during tune up testing, but everything looked OK. I couldn't understand why the boat stopped turning during the first heat. When I brought it in it was obvious.
I decided that printing with the layer lines along the long axis would help since the tensile strength across the layers is around half of the strength along the layers. Below is the new design. I divided the sponsons into quarters, giving a central bulkhead for even more strength. I used 4 perimeters and upper layers with a low infill percentake. see below.
Lohring Miller
I decided that printing with the layer lines along the long axis would help since the tensile strength across the layers is around half of the strength along the layers. Below is the new design. I divided the sponsons into quarters, giving a central bulkhead for even more strength. I used 4 perimeters and upper layers with a low infill percentake. see below.
Lohring Miller