A keep straight pole

With Itxrob's sketch I would change the collar to a chest harness or even a shoulder blade harness. The pole can have an attachment point at the top to secure to a bed horizontally/vertically or whatever.

Yes this is a good thought.
The link to collar won't be rigid, but rather a karabiner that can swivel and move a fair bit. The aim is to just hold it straight along the body.

But I'll try it uncommitted and see how it is, if it feels wrong an upper chest or shoulder wrap harness is a good idea.

Well shopping occurred today...
pipe, wood for centre and screw in eye bolts aquired.
:-D

[Like Ra]

Instead of a collar I would use a harness gag with a D-ring on the crown. Then connect the D-ring to the pipe.

Ra's comments about using a D-ring and shackle reminded me of a problem I'd been thinking over for a while.

How to attach rings/eyes/cuffs/etc to the plastic pipe without damaging it or weakening it.

@likera avoided this problem in his session by simply using rope to bind himself to the pole, but I think @ltxrob and his design needs there to be fixing points on the pole.

My experience with these poles is that they are ok if used with a spread load (as by Ra), but they bend very easily if you either weaken them or focus load in specific areas (e.g. with bolts or screws for fixing cuffs)

    - when a plastic pipe is pushed beyond its design parameters (i.e. by me for bondage! 😁 )

One idea I've had is to use wooden dowels inside the pipe(snug fitting) to reinforce areas, but maybe someone has a better idea?

MJ

fill it with sand

fill it with sand

Genius! 

And the extra weight will add to the experience too

Well suggested sir!

MJ

One idea I've had is to use wooden dowels inside the pipe(snug fitting) to reinforce areas, but maybe someone has a better idea?

MJ

That's basically what I'm doing.
41mm waste pipe with a piece of 25x25mm planed square timber inside it.
I may have to slightly offset the eye bolts in a few spots, but if I drill into the corners of the inner wood I should have plenty of bite for the eye bolts.

I've also purchase an inline connector of a slightly larger pipe size and buzzed out the inner step... this allows it to slide up and down. I plan to have this and the elbow tie on a rope loop so I can pull it up and down and pin my upper arms with the bike inner tube.

Thought this might be of interest to anyone planning a 'pole self-bondage' adventure:

    - this one if a 'face front' method, but I can see self-bondage opportunities

MJ

[Like Ra]

How to attach rings/eyes/cuffs/etc to the plastic pipe without damaging it or weakening it.

I use these things (I don't know what they are called. Yokes?)

   

They are sold in the same sewage department as the pipes.