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19th December 2012, 07:39 PM #31Senior Member
- Join Date
- May 2012
- Location
- Melbourne, Australia
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- 200
Seeing as we are getting on the rod oven stuff, I'll mention what I've done for those that may not have seen it in other threads. This is for my low hydrogen rods. I've made 4 airtight tubes so far out of 90mm storm water pipe and end caps. 90mm pipe is actually a nice size for 5kg of rods. Glue on a heavy duty cap on one end. On the other end glue on a short threaded cap adaptor. A screwed cap with a rubber sealing ring screws onto this, and is used to fill the tube with rods. In the glue on cap end drill a hole for a car tyre valve and install one of them. In the screw cap end, drill a hole to suit a tapered rubber bung (clark rubber or boating stores or ebay). The car tyre valve is to purge the tube with argon. I've made an attachment to go from my argon bottle regulator to the car tyre valve on the tube. The rubber bung is so I don't have to open the whole end cap to get a rod out and let all the argon out. I actually have a trickle purge of argon gas when I retrieve a rod (much less than when doing a mig weld) so it's barely using any argon gas. Then pop the bung back in and close the argon vale (I installed a ball valve in my argon purge line, very quick and simple). If your rods are dry when you put them in the "argon tube" they should stay dry, unless there's moisture in the argon gas. Together with one of those disposable argon bottles this could be a very portable method of keeping rods dry under whatever conditions. No electric needed.
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