I have a question. I just need one piece of 11x24 flexwatt. Do I need the special crimping tool or can something else work? Can't I use regular pliers? I think I read somewhere that flexwatt wont be accurate unless crimped by the special tool. Is this true?

I have no one around that can solder it for me. It would be so much cheaper to go the flexwatt rout than to order an ultratherm.

thanks in advance