I plan on making loudspeaker stands using 4"/100mm steel pipe and 20mm ply wood.
The speakers themselves are heavy at approx. 15Kg each hence the use of steel pipe.
They will look fairly basic with square ply panels fixed to each end of the pipe.
The problem is how to fix the pipe to wood so no bolts or screws will be visible.
I've considered pvc pipe flanges but these are far too expensive at around £12.00 each; four would be needed.