This is a remix from Thingaverse of PSomeone's "free standing tripod" with changes to the center column to allow a 4th 2x4. I also adapted to allow for "fresh from the lumber yard and still wet" treated lumber, providing approx 1-2mm of play, so the boards could more easily be docked into the chassis. I wanted to build a freestanding mount for a weather station that I could deploy to a flat section of my roof that was sturdy enough to not be blown around in a storm. Final dimensions are 6ft tall by 42 inches triangle footprint and approximate weight (with new treated lumber) is 48lbs.
3D printing recommendations:
If this part is destined for outside, you'll want to use ABS or ASA filament, which better withstands the elements and print at the manufacturer's recommended settings. I needed to use my larger CR-10's 300x300x400 build volume for this and at 80 mm/s, this took 37 hours with 613g of filament. I printed with ABS inside an enclosure and layer adhesion was pretty good. I spray painted with a white, plastic friendly spray paint, as ABS doesn't have the best UV resistance and didn't want this to yellow over time. For strength, I printed with 5 lines for walls, tops and bottom. The 10% infill felt plenty strong with those beefy walls in the final deployment.
Here are the materials I used:
(1) 10ft treated 2x4
(1) 8ft treated 2x4
(4) 1 5/8 inch deck screws
(4) washers
(pint) white latex exterior paint
Cut the 2x4s as follows:
Finishing and Assembly:
The author remixed this model.