Thermal separation



with this mod were getting a thermal separation between a metal stem and the tip. In other words our stem doesn't get hot anymore.
I just put an glas tube between the tip and the stem.
Glas has a low heat conductivity, so the heat stays in the cap and doesnt travel into the stem too fast.

examples for heat conductivity
Glass: ca.0,8
Wood: ca.0,14 (glas alternative)
Stainless steel: ca.15 
Titan: ca.22
copper: ca.300

Plus our stem gets longer and the condenser doesn't go into the tip anymore which is another heat source we eliminate.
The adapter between the glas and the stem is the harder part to build.
But with a little trick we get it done without an lathe machine.

Build this at your own risk and only if u know what ur doing ;)


-DIY- Adapter (left)



you need:
-Tube 8mm/6mm (Titan or stainless steal)
-high temp o-rings 6mmx1mm
-Dremel with a ca. 1mm cutting disc
-drill 5,8mm
-caliper+black marker
-saw
-file / sandpaper
-safety glasses

first take the saw and and cut the tube in length 10,5mm.
take the file and get both ends right-angled and the tube down to 10mm length.
The tube must fit into your stem.
If not, take sandpaper and sand it down till it fits.

now take the marker and color the tube completely. take the caliper and scratch every length from the drawing on the outer surface of the tube ...0,5...1,8...2,8...4,1... (lock your caliper when u do it)


now comes the dangerous part.
take safety glasses and be very cautious.
stick your tube onto the 5,8mm drill (other diameters can work too)

dont mind the o-rings, i didnt want to damage them when taking them off for the photo.



get your Dremel with the 1mm cutting disc like shown in the picture, hold it against the light and start pressing the Dremel slowly against the tube. The tube will start to rotate on your fingernail (if u dont have fingernails...take something out of ur toolbox everything works.) and you can get an pretty good groove if you are a bit patience and dont press too hard. Also let it cool off from time to time.

The hard part is to get the groove deep enough without destroying it. Start slow till u have a little groove then u can press harder. you can test the depth with an o-ring just press an part of the o-ring into the groove it should almost completely disappear.


when u think you are deep enough, smooth the edges with sandpaper and put o-rings on.
lubricate (spit helps) the adapter and stick it into your stem.
Dont press to hard the o-rings can get damaged.
When it fits your done!






-DIY- Glas (right)

You need:
-glas tube 10mm/8mm
-Dremel with a diamant cutting disc or a file with gloves
-caliper
-Sandpaper (120/240/600 others work too)

take a glas tube and try to cut it at 16mm length with the diamond cutting disc. You have to be very slow and patient or it will crack.

OR

take the file get a groove into the tube and crack it with safety gloves on.
Works OK sometimes, but much more sandpaper work.


Now take the 120+240 Sandpaper, get rid of the cracked surface and get both ends right-angled.
After that role a cone with your sandpaper and (no dont smoke it) sand down the edges of the glas tube.
Polish it with the 600 sandpaper and u are finished.

If someone got an better understanding of glass and a better way to cut it let me know.
Its not my special field.

PEACE




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