Due to having been born stupid and spending 61 years improving on the original condition, I've lost the link to the (US, I think) model engineering or welding or similar forum that I got it from, but a chap posted about the same design of chair last year and also included links to some plans that he had made. While I've lost the original link, I still have the plans that I downloaded, and the 12 metres of aluminium 1" square and angle section that I bought to make one of the chairs for SWMBO in her pottery workshop and me for a welding and lathe chair in my shed.
If anyone wants to see or download my copy of the plans, they're here:-
Assembly diagram.
Parts diagram.
The material is all 1/8" thickness aluminium square tube or angle apart from the seat, which is whatever wood or bog-seat you come up with.
PS:- If anyone can remember the forum that these came from, it'd be nice to know, then we could thank the author.
Edited By Mark Rand on 13/05/2019 20:04:19
Edited By Mark Rand on 13/05/2019 20:05:15