>Muffler shop benders are compression benders, unless the shop has a mandrel >bender. Compression benders produce wrinkles on the inside of the bend, >most people would find this unacceptable for appearance reasons. Man, I can't remember the last time I saw a wrinkled exhaust bend! Modern benders produce an indentation on the inside of the bend, causing some restriction in the pipe there, but no wrinkles. No problems getting 3" pipe mandrel-bent here... -- Andrew Grebneff Dunedin New Zealand Fossil preparator <andrew.grebneff@stonebow.otago.ac.nz> Seashell, Macintosh, VW/Toyota van nut |
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