Cheap way to repair exhaust leaks?

The temperature will depend on where the leak is at. If a crack in the weld at near the manifold, hotter. Have a thermal temperature gun and will have to shoot my exhaust to find out. Not sure how a perforation in the pipe would be properly sealed but have you considered an exhaust wrap? JB Weld?

I imagine a crack could be simply wire welded to seal it but it probably would not be pretty. Thinking that a perforation due to corrosion I'd just wrap it or replace the muffler as they are not too expensive.

Unless they're really uptight w/minimum charges for shop labor time - most auto repair/exhaust shops/whatever will weld such a small repair for just a coupla bucks, prolly less than what you'd spend on the "putties, muffler weld compounds, and tapes" in any case.

The trick of it is to pull the exhaust off the motor & prep the area to be welded thoroughly (remove all paint/rust/oily deposits) & wander over to the shop, show the guy the repair needed and ask him directly what it may cost, whenever they get a chance (not the counter flunkies, they tend to be clueless lol).

It's the cleanup/prep they hate, as well as "awkward" positions (still on the bike) - if it's all ready to go and all they need do is ground it & zot & you can wait till they're welding something else anyway - it'll be super cheap