Make a strong spinning pivot for your garden which can be screwed directly into wood for a solid mount that will last a long time. This spool is sized for a 1/2 inch diameter lag screw, but you can reduce or enlarge to fit the fasteners you have on hand.

I printed the spools out of carbon fiber reinforced PETG so that they would take a lot of abuse and sunlight.

There are three surfaces that contact the fastener. This is done to minimize friction and spin freely.

UPDATE May 2023: Spool redesign to reduce chipping on top, lower spinning friction at base, and easier printing. Rev 5 should be printed upside down.

UPDATE Dec 2018: I added a thicker version so the top would not be as fragile.

SeeMeCNC

Rostock MAX v3

No

No

.5 mm

25%

Print with a big nozzle to speed the process, but not necessary.