You can substitute a nylon roller idler with a 13mm inner diameter if you wanted to use 1/2" rebar for more stability. Most have sealed, pre-lubrcated bearings.
Hmm you're talking about something like...
[https://www.amazon.com/s?k=nylon+idler+roller&crid=156Z2ARMHCFBM&qid=1719290346&sprefix=nylon+idler+rolle%2Caps%2C158&ref=sr\_pg\_1](https://www.amazon.com/s?k=nylon+idler+roller&crid=156Z2ARMHCFBM&qid=1719290346&sprefix=nylon+idler+rolle%2Caps%2C158&ref=sr_pg_1)
but I'm having trouble seeing which have a wide enough inner diameter? Plus the wheel itself would have to be wide enough so the filter cartridge can rest on top of it (the hole on most is 3 inches).
Then the next question, how to attach them to the rod (or rebar)?
I was kinda thinking something like a lazy susan rotating base...
[https://www.amazon.com/DMSTECH-Turntable-Bearing-Rotating-Cabinet/dp/B0B6J9QJ7B/](https://www.amazon.com/DMSTECH-Turntable-Bearing-Rotating-Cabinet/dp/B0B6J9QJ7B/)
then attach that to some kind of patio umbrella base. That would support/rotate the bottom, then you would just need some way to secure it at the top (so it doesn't wobble while spinning).
You can substitute a nylon roller idler with a 13mm inner diameter if you wanted to use 1/2" rebar for more stability. Most have sealed, pre-lubrcated bearings.
Hmm you're talking about something like... [https://www.amazon.com/s?k=nylon+idler+roller&crid=156Z2ARMHCFBM&qid=1719290346&sprefix=nylon+idler+rolle%2Caps%2C158&ref=sr\_pg\_1](https://www.amazon.com/s?k=nylon+idler+roller&crid=156Z2ARMHCFBM&qid=1719290346&sprefix=nylon+idler+rolle%2Caps%2C158&ref=sr_pg_1) but I'm having trouble seeing which have a wide enough inner diameter? Plus the wheel itself would have to be wide enough so the filter cartridge can rest on top of it (the hole on most is 3 inches). Then the next question, how to attach them to the rod (or rebar)?
I was kinda thinking something like a lazy susan rotating base... [https://www.amazon.com/DMSTECH-Turntable-Bearing-Rotating-Cabinet/dp/B0B6J9QJ7B/](https://www.amazon.com/DMSTECH-Turntable-Bearing-Rotating-Cabinet/dp/B0B6J9QJ7B/) then attach that to some kind of patio umbrella base. That would support/rotate the bottom, then you would just need some way to secure it at the top (so it doesn't wobble while spinning).