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That looks just like what I spent the day building. It's fun to build things on your own. I bought a Weller HD solder iron that looks very much like that. It has a tip that is close to 3/8 inch wide. I drilled thru the head of the iron and installed a small brass tube to inject the plastic rod. Right now it has an interference fit that holds the tube in place but I dont like it. I think it might come apart. I'm thinking that I might be able to braze it.
The package said that the iron heats to 900F. I tested it after I had drilled the hole and found it only came up to 685F. I hope it will still do what I need it to do. I need to find a good chart that tells the melting point of different plastics. I know that some times it makes some plastics brittle to over heat them when welding. I will build a box with a dimmer to control the heat level.
Thanks for posting the pic of your set-up.
Eric
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06-14-2011, 03:52 PM
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