A follow up on a couple of things pertaining to my original thoughts in case anybody is interested. I found a topic on another site where people were making their own versions of the provap 110. Just dona google search for band heater vaporizer. I won?t link it as I don?t know that it?s appropriate. Either way it involves welding some 3/16? copper pipe into the side of a 1? to 1.5? copper pipe with the 3/16? pipe acting as a spout of sorts. You then use a band heater to sublimate the oa. Some use electronics to better control the temp and others just use a weaker heater and wait a little longer.
Back on topic - that's exactly what I was planning to do just as soon as the weather moderates enough so that I can weld without my hands shaking with the cold. I'm planning on making a mild steel prototype in order to iron-out any bugs, before making the final device from stainless steel. I already have the tubes and band heater - still have the the electronics to make - but it's the weather which is holding things up right now.
I've found the relevant Beesource thread (thanks) - 21 pages ! - I'll have to wade through that later this evening. Appreciated.
'best
LJ
I made mine out of 1 1/4" copper tube. 1 end cap for the bottom a small section of tube and an endcap for the top. I centered a 1" end cap in the top to hold the OA. The biggest problem is getting a good seal for the lid (using high temp RTV) and the fact that I only made one. I set the control at 230C; it cools to about 160C before it starts heating back up. By about 210C it is completely done. I used MAPP gas and brazed things together as those temperatures are way too high for solder.
I've thought about having a machinist friend of mine make one out of aluminum stock, but I haven't gone there yet. One other thing that really helps with recovery time is insulating outside the heater. I just got some high-temp exhaust wrap to redo mine.
