What is JB Weld? or other products for this use?

All of these products are pretty close to miraculous - they stick to many things with a vise-like grip, and can take a lot of abuse. JB Weld, is, for example, regularly used to repair non-structural cracks in engine blocks. I've fixed a 12" crack in a Mercury outdrive cooling "log" with JB Weld, still holding 10 years later.

That being said, these products are not suitable for structural repair. I don't know exactly what the "brake arms" are that you refer to. If these are pits in the brake levers, and you want to do a good cosmetic repair, JB Weld would do a good job. If you're talking about the internal levers that work the brakes, I'd be inclined to weld them.

HTH

llater,

llamas

There are other products by Devcon and others that are similar, but JB Weld seems to be the favorite. given specific applications it works well. I have used it to fill cracks in blocks, smooth axle shafts that were pitted for a seal to ride on and rebuilt a water pump housing on a dirt bike motorcycle.

It has a lot of uses, but it has its limitations. It is available at most hardwares and farm stores.

JerryU