Created a blank insert where different sized holes could easily be made with your slicer of choice, depending on your needs.
Make the hole a insert hole a little smaller than your wire diameter in TPU with a some Boat Life Seal or silicone caulk and you have a solid water resistant thru hull kit. Costs pennies compared to $15 per unit.
4mm-12GA-GridLocXL_Insert.stl | 134.9KB | |
Blank_GridLocXL_Insert.stl | 13.0KB | |
Dual_4mm-12GA-GridLocXL_Insert.stl | 243.1KB | |
GridLoc_XL_Thru_Hull_Plate.stl | 115.5KB |