I have built a simple frame/outdoor gym in the garden for doing simpler exercises. On the short sides, there is a chin-up bar made of a galvanized steel pipe. The idea was that the bar would stay fixed, without rotating, thanks to the friction between the steel pipe and the wood.

It works well on one side, but on the other side (because I didn't drill the holes for the pipe straight and had to enlarge the hole to get the pipe through), the pipe is not really fixed and rotates when doing exercises.

Does anyone have a good idea on how to fix the pipe so it doesn't rotate? One thought I have is to drill a hole through the post and the pipe and secure it with a screw. But that's not really aesthetically pleasing.

I plan to cut the pipes so that they don't protrude "outside" the frame. Therefore, another thought is to somehow thread the pipes inside and secure them with a screw or similar on the outside? Is that possible?

The pipe has a dimension of 25, i.e. an internal measurement of about 30 mm.
 
  • Outdoor gym frame with a chinning bar made of galvanized steel pipe mounted between wooden posts, set in a garden surrounded by trees.
Dvillan
Hi!
Great with an outdoor gym :)
I would do as you are already considering, drill holes in the post and pipe and secure with bolts in the same dimension as the others. An alternative is to drill a hole halfway through the post and screw in from behind, between the beam and the diagonal brace, to get a concealed bolt that is not visible from the front.
 
Cut the pipe flush with the outside of the post. Then temporarily remove the pipe and drill a hole, about 6-7mm in diameter, approximately 10mm into the pipe. Put the pipe back in place. Screw an appropriately sized screw at an angle from the inside of the pipe out through the hole and into the post. It will only be visible if you look into the pipe.

Alternatively, drill right through the post and pipe as you mentioned and insert a carriage bolt. It just looks like a metal knob when it's in place. Or drill halfway through the post and all the way through the pipe and drive in a 4" nail. It won't be very visible either.
 
A small plate on one side with a short pipe in the middle that fits the inner diameter of the pipe. Drill through both and screw together or alternatively weld. Slide in, screw the plate on.
 
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