Custom CARBLESS VapCap Ti stems

Mr Turnip

Well-Known Member
Yeah mate that's what I'm going to do I just haven't got it straight in my head the size stems I'd need.

I want two stems both to use use xl condensers but one stem to use an exotic dynavap wooden mouthpiece and the other using the stem as a mouthpiece

Hope I make sense now..
 

Mr Turnip

Well-Known Member
Ah thanks posted as I did much appreciated!!...

I can have a look what stems I'd like now to make an order up.
 
Mr Turnip,
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stardustsailor

Well-Known Member
Accessory Maker
I so much enjoy working with Titanium !
In fact ,lately I've been experimenting a bit with some scrap Ti rods i 've traced .
Ok ,not so vapor related equipment,but I think worth to show .

Latest item : Simple Titanium razor mono-stand (not yet polished ) .


Cheers.
:science:
 

stardustsailor

Well-Known Member
Accessory Maker
Stardustsailor,

Received the stem today. It is beautiful and looks even better than the pictures.
Depending upon the light, the color of the stem changes from purple to blue.

You are truly a craftsman.
Thank you !
Do you like the carbless fuction of the stem ?
 
stardustsailor,
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stardustsailor

Well-Known Member
Accessory Maker
Time for a short material safety shot !

The Cap

Most probably (I'm almost sure ) is made out of 304 (aka 18/10 or 18/8 ) grade stainless steel.
It's safety ?
Well,that perticular ss grade is the so called "food-grade steel" .
https://mightynest.com/articles/stainless-steel-all-about-food-grade-304-188-and-1810
Used for years for cookware,forks,spoons,knives,etc

The bimetallic discs inside the cap
Most common metals & alloys used in manufacturing bimetallic discs :

http://www.emsclad.com/fileadmin/Data/Divisions/EMS/Download/Bimetal_Desingers_Guide.pdf

None of the metals /alloys used is outgassing Volatile Organic Compounds,
as also none releases metal or metal oxide fumes ,at the operating temperatures of the
VapCap.

The cap is 100% safe to use .

Interesting facts :

1 ) The cap itself is not attracted by a magnet (304 grade ss is not ferromagnetic ).
It's the L.E.S. of the bimetallic discs that is attracted to a magnet ,actually.

2 ) The ferromagnetic LES of the bimetallic discs can lose it's magnetic properties
and it's low expansion properties at the same time .How ?
By heating the bimetallic discs over the temperature of 230 -240 °C .
You can kiss the clickers goodbye if so !

A cap that does not stick to a magnet ,is a dead cap ...

THE EFFECT OF FLEXIVITY TEMPERATURE DEPENDENCE ON MATERIAL SELECTION
Most LES materials exhibit a phenomenon known as the “Invar Effect”. The Invar Effect is the near zero thermal expansion that occurs in some materials. The Invar Effect occurs below the materials Curie temperature. The Curie temperature is a specific temperature for each material defined by the material’s atomic structure at which the material changes magnetic permeability. Above the Curie temperature, a phase transformation occurs which changes the material’s magnetic permeability from ferro-magnetic to para-magnetic. The changes in crystallo-graphic orientation, energy, and entropy that occur as the Curie temperature is approached cause LES materials to lose their low expansion properties.
Above the Curie temperature, LES materials have rates of thermal expansion similar to typical steel. Therefore, LES materials must remain ferromagnetic and be used below their Curie temperatures to maintain their low expansion characteristics. The commonly defined Curie temperature for standard Invar (Fe-36Ni) is 230°C.


http://www.emsclad.com/fileadmin/Data/Divisions/EMS/Download/Bimetal_Desingers_Guide.pdf


Cheers.
:science:
 
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Summer

Long Island, NY
I finally got around to taking pics of the stem I rec'd. (Should have cleaned the lint off the lens.) The rock finish, when not in sunlight is a matte finish with a medium grey mottled undertone, assumably from the processed titanium. Without light directly hitting the finish it is a muted, matte, medium-light grey blue. The pics where taken in ambient sunlight. When the blue changes to turquoise/aqua blue it's because I added the flash in.

nXQl28w.jpg

cpR8iW5.jpg

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cpR8iW5.jpg

l4XWEw4.jpg

cSqCxu1.jpg


I love the texture of the rock finish. It's smooth, but very comfortably grippable unlike smooth, slippery metal. As I said previously, love the size of the carb hole, the finger indentation & the hammered cigar bands. While I'm extremely pleased with the stem, if I had to do it over again, I would pick the sandstone finish in turquoise (shown in posts 243 & 246) as it would offer slightly more reflective bling. Because of the mottled grey undertone, I think this rock finish would look fantastic in copper, bronze or antiqued bronze. I think it would have a very masculine, cigar-like appeal.
 
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stardustsailor

Well-Known Member
Accessory Maker
An OMNI XL stem.
Have to admit that this is one of the most cool looking stems I've made so far.
Hue is sky blue with some purple shades here and there.
Coarse tree bark textured band with two hammered rings ( 5 mm @ mp & 10 mm @ tip end ).









Cheers.

 
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