I think someone made a similar posting a while back, however I can't find it so here is my version.
Soaking wood to make them softer for bending is always an issue. Some of us has a bathroom or another great nearby facility of water where one can drench the wood without being disturbed.
Here is the material list:
3ft 2" PVC pipe
1/4" dual thread bolt.
Two 1/4" nuts (used for tighten the bolt into the wood)
1/4" large wing nut.
To make sure the end was water tight I used silicon both when attaching the end cap to the pie but also around the "thread" line.
I tested the tube, having it filled to the rim with water sitting over night.
No water came out.
The C-clamp literally snaps around the pipe.
Setting the height towards the table, I drilled and attached the bolt.
With the wing nut it is easy to remove when not needed.