I purchased a used & repaired Loop solo seat from WG member Aldo (great transaction, very happy) with plans to use the repaired plastic seat pan as a pattern to make a pan from crs for one of my projects. Not very familiar with Loop stuff, but if these seats were ever original equipment, I’m assuming the original pans were steel.
If so, Does anyone here know how the upholstery was secured to the pan? Did the pan have teeth or barbs that pierced the vinyl , was some kind of channel binding used to crimp the vinyl over the edge of the pan or was it stapled directly to the seat pan like this repro seat?

hebrew senior life