Recent content by jim07601

Stargon. It is a mixture of argon with CO2.

You can have them lapped. If you blanchard grind you have to take light passes and use a lot of coolant. Also, You have to flip the pieces over a few times as you are thinning them down. The main problem is resideual stresss from the initial fabrication of the spacers. It will be symmetrical, so...

An alternative option is to make the 180 degree bend with elbows.

Black oxide done right is very, very durable.

An eddy current meter might work. Alternatively, if you move the paper, it might generate a small magnetic flux.

could be a black oxide coating.http://en.wikipedia.org/wiki/Black_oxide

You might try blasting with dry ice.

The standard heating coil material for this would be nichrome.

You might try TIG welding Stellite into the cracked region and then remachining it.

Soldering is very difficult. They do make silver brazes which can be applied using a torch. If you can get by, you might just try an epoxy.