CRX Atom Ti Triple Nichia 219C


Very nice. :+1: :beer:

Get well, stay well.

Genius idea with the magnetic keyring holder :star: :star: :star: :star: :star:

Of course, everything else is your typical AWEsome work as well. :+1:

I’m curious about the bayonet, what’s in the female end (how did you do it) ?

I admit I haven’t figured this one out. How’s this work?

Awesome build and mod as always!
Hope you are getting better now. :+1:

Great build - beautiful beam!

Beautiful, compact, well performing light. Just superb. :slight_smile:

I previously had my FourSevens Atom on the keyring, have carried it as part of my EDC for some years now in various iterations but it is a 16340 light and made from stainless steel, titanium is my metal of choice so I had a go at making something similar in Ti to match my other titanium EDC carry tools.

Comparison. The 47s Atom had also been modified with a similar magnetic holder, through switch etc.

The bayonet locking system is really simple, just drill a hole into the shell, tap it, mark the other piece for the slot, partially screw through around 0.8mm a tight fitting machine screw along with jb weld and once set file it flush with the light body. 0.1mm titanium sheet stuck in backing the slot.
Of course waterproofing is an issue without machined threads but my pocket lights never get wet, I haven’t fallen in the moat yet :smiley: the internal body does butt up against an o-ring and the internals are potted.
Best I can do with hand tools.

On lights that I convert to tail E-switch, if there is not enough width in the battery tube to insert a switch carrying signal tube like there is in the FW3x lights you can make a simple insulated thin metal bar that goes from the momentary tail switch that connects to a contact plate on the driver.
I make a copper contact disc just smaller than the internal diameter of the flashlight head, solder on a 30AWG switch wire, drill through a safe spot on the driver, pass the wire through, solder to the E-switch terminal and pot the contact disc onto the driver.
Like this:

Novatac 18350 conversion:

Thanks guys :+1:

Exceptional work as usual. I like your use of new exotic materials. I never knew about grade 9 titanium.

Some of us struggle to make an exceptional build for the OL-contest once a year, others make them every month. :wink:

Great build as always, CRX. I admire your consistent style in the fotos as well as your building skills. :+1:

Thanks, yeah the pure stuff is quite soft, relative to some of the alloys.

Some grades:

CP Titanium – Commercially Pure Titanium:

Grade 1:
Commercially Pure Titanium Grade 1 is the softest titanium and has the highest ductility. It has good cold forming characteristics and provides excellent corrosion resistance. It also has excellent welding properties and high impact toughness.

Grade 2:
Commercially Pure Titanium Grade 2 has moderate strength and excellent cold forming properties. It provides excellent welding properties and has excellent resistance to oxidation and corrosion.

Grade 3:
Commercially Pure Titanium Grade 3 is stronger and less formable than Titanium Grades 1 and 2. It is used in Aerospace and industrial applications that require moderate strength.
Grade 3 titanium has excellent corrosion resistance.

Grade 4:
Commercially Pure Titanium Grade 4 is stronger than CP Grades 2 & 3 – it can be cold formed, but has lower ductility. It has excellent corrosion resistance in a wide variety of environments. Grade 4 titanium is commonly used in Aerospace, Industrial and Medical applications where high strength is needed.

Grade 7:
Titanium Grade 7 has physical and mechanical properties equivalent to CP3 titanium or Grade 2. It has excellent welding and fabrication properties and is extremely resistant to corrosion especially from reducing acids.

Titanium Grade 11 – CP Ti-0.15Pd:
Titanium Grade 11 is highly resistant to corrosion has similar physical and mechanical properties to Titanium CP Grade 2.

Titanium Based Alloys:

Grade 5 – Titanium 6Al-4V:
Titanium Grade 5 alloy is the most commercially available of all titanium alloys. It offers an excellent combination of high strength and toughness. Grade 5 titanium has good welding and fabrication characteristics.

Grade 6 – Titanium 5Al-2.5Sn:
Titanium Grade 6 alloy offers good weldability, stability and strength at elevated temperatures.

Grade 9 – Titanium 3Al-2.5V:
Titanium Grade 9 has medium strength that falls between Grade 4 and Grade 5. It has excellent corrosion resistance and is used in Aerospace and Industrial applications. Grade 9 Titanium can be used at higher temperatures than Grades 1 through 4. Grade 9 titanium has good cold rolling properties.

Grade 12 – Ti-0.3-Mo-0.8Ni:
This Titanium Grade 12 alloy is similar to Titanium Grades 2 and 3 except that Titanium Grade 12 has 0.3% molybdenum and 0.8% nickel. This offers enhanced corrosion resistance.

Grade 19 – Titanium Beta C:
Titanium Grade 19 has very high strength and can be heat treated. It offers good resistance to stress and corrosion.

Grade 23 – Titanium 6Al-4V ELI:
Titanium Grade 23 is similar to Grade 5 but has lower oxygen, nitrogen and iron. It has better ductility and fracture toughness than Titanium Grade 5.

Titanium 6Al-6V-2Sn – Titanium 6-6-2:
Titanium 6-2-4-2 has excellent strength, stability, and creep resistance to temperatures as high as 550 °C.

Titanium 6Al-2Sn-4Zr-2Mo – Titanium 6-2-4-2:
Titanium 6Al-6V-2Sn is a two-phase, Alpha Beta Alloy. It is usually used in the annealed or solution treated and aged conditions. It’s a heat treatable, high strength alloy with lower toughness and ductility than Titanium Grade 5 (6Al-4V) and it’s difficult to weld. Cold forming of Titanium 6Al-6V-2Sn is difficult because of its high strength and the large amount of spring-back that results. This grade can be welded by the inert gas shielded, fusion welding process but the heat effected area will have less ductility and toughness than the parent material. The hardness of Titanium 6-6-2 is approximately Rockwell C 36-38. This grade is primarily used for airframe and jet engine parts, rocket engine cases and ordinance components.

Titanium 6Al-2Sn-4Zr-6Mo – Titanium 6-2-4-6:
Titanium 6Al-2Sn-4Zr-6Mo is an Alpha-Beta Alloy and it’s generally regarded as the workhorse alloy of the titanium industry. The alloy is fully heat-treatable in section sizes up to one inch and is used up to approximately 400°C (750°F). Since it is one of the most commonly used alloys (over 70% of all alloy grades melted are a sub-grade of Ti-6-4,) its uses span many aerospace engine and airframe components. Titanium 6Al-2Sn-4Zr-6Mo is also used in lots of non-aerospace applications such as marine, offshore and power generation industries. This Alpha-Beta Alloy combines good corrosion resistance and strength with weldability and fabricability. The alloy is generally available in bar form and it’s typically used in deep sour well applications. This alloy can be hot or cold formed.

Titanium 8Al-1Mo-1V – Titanium 8-1-1:
Titanium 8Al-1Mo-1V is a near Alpha Alloy that was primarily designed for use at elevated temperatures – up to 455 degrees centigrade. It offers the highest modulus and lowest density of all Titanium alloys. It has good creep strength and it’s weldable by the inert gas fusion and resistance-welding processes. Titanium 8Al-1Mo-1V is used in the annealed condition for such applications as airframe and jet engine parts that demand high strength, superior creep resistance and a good stiffness-to-density ratio. The machinability of this grade is similar to that of Titanium 6Al-4V.

Titanium 10V-2Fe-3Al:
Titanium 10V-2Fe-3Al is a Titanium Beta Alloy. It is harder and stronger than many titanium alloys. This Titanium is a heat treatable alloy, it’s weldable and it’s easily formed. Titanium 10V-2Fe-3Al is an all Beta Alloy and is more difficult to machine than most titanium alloys. The chief problems include flank wear, spring-back and chip control. Because of these characteristics, positive rake chip grooves in combination with light hones on the cutting edge are advantageous.

Titanium 15V-3Cr-3Sn-3Al:
This Metastable-Beta Alloy is used primarily in sheet metal form. It is age-hardenable and highly cold-formable. Titanium 15V-3-3-3 is often used to replace hot-formed Titanium Grade 5 (6Al-4V) sheet. It can also be produced as foil and is an excellent alloy for castings. For aerospace applications, this grade is often specified as AMS 4914.

Titanium Alpha Alloys:
Commercially pure titanium and alpha alloys of titanium are non-heat treatable and have very good welding characteristics.

Titanium Beta Alloys:
Titanium Beta or near Beta Alloys are:

Fully heat treatable Generally weldable
Capable of high strengths Possess good creep resistance up to intermediate temperatures
In the solution treated condition, excellent formability can be expected from Beta Alloys
Titanium Beta Alloys are ideal for sporing applications. Common Titanium Beta Alloys include:


ASTM Grade 19

AMS 4983, 4984, 4987

ASTM Grade 21

AMS 4914

The Metastable Titanium Beta Alloys are heat treatable by solution treatment and ageing. Fully stable beta alloys can only be annealed.

Titanium Alpha-Beta Alloys:
Titanium Alpha Beta alloys are heat treatable and most of them are also weldable. The typical properties of Titanium Alpha Beta Alloys are:

Medium to high strength levels;
High temperature creep strength is not as less than most alpha alloys;
Limited cold forming but hot forming qualities are normally good;
The most commonly used Titanium Alpha Beta Alloy is Ti 6Al-4V. Titanium 6Al-4V has been developed in many variations of the basic formulation for numerous and widely differing applications.

Other Titanium Alpha Beta Alloys include: 6Al-4V-ELI 6Al-6V-2Sn 6Al-2Sn-4Zr-2Mo 3Al-2.5V 8Mn

I love it! :slight_smile:

The CRX Rotary was made with Grade 2 pure Ti.

Easier to work with but it scratched up too easily so I coated it in carbon fibre.

My war armor lighter is made with grade 5 6Al-4V, is carried daily in a pocket along with keys etc and hasn’t changed at all really in around four years of carry & use.

Thanks :+1:
Just trying to give ideas & set examples :smiley:
Though it is much more difficult including the actual build/ methods used pictures.
Sometimes I do but most times it is too much hassle :innocent:

glad youre better
I worry when you are absent

still speechless about your mods
thanks for the great photos
truly inspiring

Nice to see that you are healthy and active again :slight_smile:

The Atom is Awesome. Very Clean Finish…. love it. And the Charger … :+1:

Hope you’re over the illness, awesome inspired build as always, perfect edc, need to keep saving beer tokens before i can talk to you about an old novatac that could do with some triple 18350 glow stuff CRX magic…….

one day maybe…


All the best matey, sorry to hear you have not been too good. Glad on the mend, love your new triple. Super talented chap, super top chap to boot!! :beer:


While others would head-bang a wall
CRX has no trouble at all
At creating such art
That it sets him apart
As the Master of everything small

Well, maybe not everything… :smiley:
Thanks for all your well meaning comments, much appreciated :+1:

I bet the all the titanium we see in the flashlight, knife, and edc world is the Grade 5 Ti 6Al-4V.

I know that’s what my pry bar that I’ve EDC’d on my keychain for years is made of, and like you’re lighter it’s held up very well.

I’d still like to check out some of these other alloys you mentioned and see how they take heat anodizing among other things :slight_smile: