Heat pipes are not high vac devices
heat it up with a couple of foil heaters, benz-o-matic, hot plate whatever. drop your liquid in and seal it with a press,(I have a small Hand press I bought off of Harbor frieght ) Hammer, vise, simple valve . You could set up a single valve and do multiple pipes if you wanted, no problem. I have done it for a little test I was running- used rolled up paper towel for a wick
It works like the old vacum thermos bottles. heat it up, seal it and when it cools you have a 50% vac.
I think you could even make one up with a good rubber stopper. Heat it up seal it with the stopper. Then take a needle and a syringe and inject a few drops of liquid.
Not a big deal really considering some the acrobatics people go through buiding blocks and modding systems.
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