the STL's with the most important components for the assembly of the cooling water hoses, as well as for the construction of the cooling unit I have provided in a posting above.
Of course, you should make these parts BEFORE remodeling the printer!
Let's start today with the assembly of the heat exchangers and the preparation of the hotends.
On the threads of the hose nipples a drop of sealant is added, then the nipples are screwed into the heat exchangers. Please with a lot of feeling, because after firm comes off!
Let it dry for an hour!
Preparing the Hotends:
In order to make the Throattube and the nozzle more easily removed later, the threads are topped with copper paste and both are mounted in the aluminium body.
If the nozzle and throat tube are adjusted and tightened tightly, the intake of the Throattube is coated with thermal paste and then screwed with the heat exchanger.
Checks with a thin piece of cardboard that both heat exchangers at the back do not bump into anything.
Information on the cooling lines:
This system uses three different cooling lines.
1. The silicone hoses of the pump and the cooler
2. The PVC hose, departing from the pump to the extruder transfer point
3. The hose of an infusion, starting from the transfer point to the heat exchangers
Why the hose of an infusion line?
Quite simply, because this hose has the same dimensions as the PVC hose, but is more flexible.
The PVC hose, on the other hand, is more optimal for installation by the energy chain.
I have prepared the PVC hoses as follows:
Two long pieces with approx. 2.50 m each cut.Pulled the tissue hose over it. Blue for the cold line, red for the warm line.I cut off the fabric hose so that 25 cm of the hose remained bare at each end. To prevent the fabric from being french, I have sealed the cutting edges at the ends (cautious!!!) with shrink tube. Here you have to be hellishly careful, otherwise the inner PVC hose deforms!
Opens all clips of the energy chain and now lays the lines. I laid the blue line at the top and the red line at the bottom.
Preparation of the cooling unit:
The acrylic holding plate and the feet are only plugged together.
The holders for the pump screwed on, and the pump plugged into the brackets.
The spacers are screwed into the cooler. But beware: it is important to make sure that the threads do not damage the slats of the cooler!
On the front side, the fan can then be screwed on with protective grille and the fittings for the water pipes. Please tighten everything tightly and emotionally!
In the small black box I have placed the wiring for the fan of the cooler and the pump. Later, the supply line for the electronic flow meter is added. It is up to each individual to decide how to solve this. Either print a box yourself or buy it as a finished part. I had to buy because my printer was disassembled at the time.
In my next posting I explain the rest of the conversion.