For pipes soldering we must drill one thin hole of 3 mm diameter in the ingot over each pipe. Bevel the holes to get a kind of funnel for solder. Degrease component parts with acetone. Install the prepared heat remover construction with adjusted pipes on the range burner. Dribble a drop of flux (but not more) in each hole. Having warmed up the construction to necessary temperature, put pieces of solder in the holes with the help of tweezers until it emerges underside, from under the pipes.

All the manipulations on the warmed device must be done very fast not to overheat the heat pipes. Worry about having all the necessary tools close at hand before starting the work. You need a table lamp to see everything properly; solder, flux, tweezers; clean and a little damp cotton rag to wipe spilled solder; a glove on the right hand to move the hot heat remover; relaxing music to calm down.

When molten solder will run out of the heat pipes side the device can be considered properly soldered. After soldering, shift the heat remover from the range burner carefully; wipe the solder and flux stains quickly with a rug.

Solder the heat removers on an ideally plane plate with glassceramic covering. To work on a gas stove, you must find a plane iron plate. I remind you that it’s inadmissible to bend the heat pipes after soldering. You can bind only a little bit, 2-3 mm (you will not avoid this…). Bind a little to adjust.

After soldering, cool the heat remover with a compressor or vacuum cleaner air current. I don’t recommend using water for cooling. Be attentive as the heat pipes lose their characteristics irreversibly at the temperature more than 100° C. Having cooled the device, wash out the flux remnants.
This technology is applied for chip set, video adapter and bridge coolers manufacture. The heat pipes of the mentioned above devices (ZM80D-HP ZM-2HC2 and Big Typhoon heat pipes) are good for soldering and bending (ZM-2HC2 are not so good). ZM80D-HP heat pipes are covered with some goldish ornamental lacquer. Remove this lacquer in places for soldering with emery paper ¹0.
Handle the finished soldered device carefully; the pipes can bend under the weight of copper ingots.