My DH and I are sewing backpacking gear with my 15-91 and 328, but neither quite has the power we need. The 15-91 will go through 3 layers of thick webbing, but not 4. I would like to buy a vintage machine with a bit more industrial power, but do not know what models to look for. I need a true industrial machine, not one advertised as industrial just because it weighs a lot, if you know what I mean.
Any advice would be greatly appreciated.