Home Front: Impact testing

I wanted to do a bit of a demonstration on the effects of some of the impact tools I have been covering of late, and throughout my reviews.

Here's the lineup:
1)Cybernetic Research Labs Tactical Pen
2)Ti2 Techliner pen
3)RaidOps MF Delta
4)RaidOps TM Joe
5)Sharp Shooter keychain




I asked a group of my hitting and hacking peers and came up with "pumpkin" as as good a target for testing as any.

I wanted a good solid target, which would offer a fleshy impact simulation, not be pulped, but also not shatter on impact. I happened to have a butternut pumpkin handy and it being winter here, wanted some with dinner.

For good repeatability of the tests, I chose a downwards punch from about chest height for each strike. I didn't put any hip into the strike, nor follow through, just a static jab type punch. For the pen type tools I used a downward stab, from the heel of the fist. I braced the pumpkin with a pencil, just to stop it rolling, and turned it for each strike to hit a fresh surface 

The CRL. Tactical Pen sunk in only to the depth of the tool tip, stopping at the body of the pen. It collected a lot of material on the way out. In fact, my pen still has pumpkin wedged into the fluting.

The Ti2 TechLiner pen sunk in further than I would have expected for a blunt tool, but it's sleek lining offered little resistance. It also cored some pumpkin, but not nearly as aggressively as the CRL pen.

The MF -Delta had a fairly shallow penetration, with the flat head giving a regular indentation and the bottle opener head giving a shallower, but jagged indentation. I wasn't surprised that the Delta didn't dig in more, but it did feel very comfortable in the hand. 

The TM -Joe dug in a surprising amount, all the way to the "jaw" of the tool, which upon reflection, shouldn't have been surprising, given the chisel-wedge shape of the teeth of this tool.  

The SharpShooter was an interesting test. I did two, one from the key-end as a flail. Again with my hand held around chest height, and the second as a pen-strike as with the CRL and Ti2 pens. 

The flail end of the SharpShooter left a very shallow, but messy set of intends, one for each key, as well as the shackle, and even one from the ring (which I accidentally had left loose, rather than around my finger as per the instructions).






The pen end of the SharpShooter was fairly disappointing, but not unexpected, mostly because of the combination of the rubber stopper and the paracord knot. It left a bit of a bruise on the skin, but no discernible penetration. 

I then started cutting up my pumpkin, and got to see the trauma dished out by each tool.

The CRT and Ti2 pens showed their depth of penetration and the tissue trauma really nicely.

The MF-Delta's shallow penetration belayed the broad spread of trauma beneath the skin, which was quite pervasive all around the penetration, to a respectable depth

The TM-Joe offered a comparable amount of trauma, but deeper and wider. This is definitely the nastier of the two tools to strike with. I shudder to consider the combined effects of skin and flesh and bone when struck by this titanium tool.


The Sharp Shooter didn't display any significant penetration, nor trauma beneath the rind of the pumpkin (which was delicious, I might add).

All in all I'd say that the RaidOps TM-Joe was the most devastating tool to make a mess of a pumpkin with, and perhaps I will move on to some meat-tests with it, like I did with the SuperHammer and KA-BAR knives ...

Review: Ti2 TechLiner pen

From the makers of the Ti2-PB9 parabiner pulley  the Ti2 Sentinel S4S cache and the most excellent Ti2 Sentinel X cache, comes this fine implement. This was also Kickstarted, but I had missed out, and luckily for me when the good folks at Ti2 sent me replacement Sentinel X's, they also included one of their new item, the Ti2 TechLiner pen.

Here it is lined up against one of my other titanium pens, the Tactical Keychain TKMB. One of the key differences between the two, and in fact, most pens I've encountered, is that the TechLiner was designed to have cap retention without threads.

The Cybernetic Research Labs tool pen is threaded, as is the hefty EDC Pen is also threaded. In fact, all my tactical pens are threaded, except this one. So, how do they do it?

Magnets! (how do they work?)
Using 3 rare earth magnets, built into the cap, the tail end and around the pen with a toroid magnet. The cap is pulled on tip or tail with approximately 900g (2 lbs) of force.  The unique custom ring magnet that fits around the tip of the Signo 207 refill series.Apart from anything else, this is a very nice pen tip to write with, good for precision work as well as note writing.

The three piece body opens up at the tail end and at the tip to let you for replacement ink cartridge. 

Each end is fitted with a machined grip, designed for a tactile grip surface which is comfortable for extended periods of writing.  The machined "grid" pattern offers a non-slip, secure grip without adding any snag points.

I've had this kicking around in my pocket for weeks, and the magnet in the tail has kept it attached to the other tools in my EDC ring. It doesn't have the "hammer through a brick wall" feel of the EDCPen, but it is a serious piece of hardware nonetheless. Dropped, run over, kicked along concrete and it's barely scratched.

One of the things I love about this is it's sleek lines and snag free design. Also, magnets!

Review: Ti2 - SentinelX

This beauty came to me as a Kickstarter (my initial pledge rewards got lost in the mail)just recently, and I've been thriiled to put it to some initial use.

From the makers of the Ti2-PB9 parabiner pulley and the Ti2 Sentinel S4S cache comes the the Sentinel X Cache. You may recall I wrote a wish-lust piece on it, a while ago, and am very pleased to finally have them in my hand.

Unlike the pocket sized Ti2 S4S cache, this is a large format, hard anodized aluminum cache.  It's internal dimensions are 51mm diameter x 153mm length (2" and 6"). Their  external dimensions 63mm x 204mm (2.5" and 8"). So around the size of a can of Coke around, and about the length of one, in the middle section. Empty, it weighs 400 g as it is made from aircraft grade 6061-T6 aluminium which has been strength optimized using "CAD parasolid modeling" giving it its unique ribbed / skeletonized design.

The tube is threaded at either end so you can access contents from either end, change out the end cap options, clean and empty it. The threads have a modified stub acme shape which is to say a trapezoidal cut, with twin Higbee blunt starts, so you don't get any cross-threading and better chances of a first-time screw.

Twin o-rings (white teflon rings shown here, orange food-grade silicone rings seen on the main project page) give redundancy and water-tightness. Both types of o-rings  are food grade  and able to withstand temperatures required to boil water. The teflon doesn't need greasing, which is an advantage in my books.

I really liked that the bottom cap has vent holes giving it a built in trivet  for boiling water or cooking in. I did a rough boil test, using an enamel camping mug, and the SentinelX was just a little quicker to boil. It also retained a lot of residual heat, with its thick walls, but its also worth noting that the entire container heated up. Even only lightly screwed on, the lid conducted enough heat to be barely touchable by the time the water boiled. I needed to use a wooden spoon to carry it off the flames.

The container holds 325 mL (11 fl oz), which is in keeping with its "less than a can f Coke dimensions, but to give you an idea of how much stuff you can store in it, I took this photo, of a fist-full of pens and pencils (23, but some mis-matched sizes).

I got one of each of the Type 3 Class 1 anodized coating. One in "regular" and one in the slicker looking "satin" finish.  This hard anodizing is typically used for military applications, but also on pots and frying pans offering excellent flame resistance. It's food grade finish was what I was most looking for, as  I wanted to be able to store and carry foodstuffs in it safely.

They also offer  Type 3, Class 2 anodized, NON food grade and available in black, olive drab and brown satin finish only.  Both Class 1 and Class 2 exhibit the same durability properties, so I wasn't trading off durability for food safety. Well worth it in my mind.

I haven't yet worked out what I will store in mine, long term, but I have carried it around in my Propper MultiPurpose Bag for some time now, with snacks and edibles.

I wanted to try making a up of tea with the hot water I had boiled, and found that it made a very passable brew, though the conducted heat I talked about earlier made it difficult to enjoy the drink, without wrapping in a towel first.

Those top lanyard holes make an excellent lanyard loop, for securing the cache, perhaps in a out-of-sight location, or perhaps as a hook point for when it is too hot to hold.

I am really pleased to have these in my collection, although as  I mentioned earlier, I still haven't decided what to fill mine with. I have been considering what item's from my Bug-Out-Jars would fit nicely, a line of thought that one of the beta-testers of the SentinelX shared.

As well as in my new bag, it's worth noting that the SentinelX also fits nicely into my Platatac FUP and would most likely fit into most double-mag pouches, like the Platatac 60Rnd or similar pouches.

This is a really cool product, and I certainly appreciate the modular and rugged performance that it offers. I'm looking forwards to keeping these on hand, filled with my needfuls.

Sneak Peek: Ti2 - Sentinel X containers

Just arrived in the mail, following shipping misadventures... I'm really excited about these ... Stay tuned!

Review: Ti2 - PB9 parabiner pulley

I seem to be fully addicted to both Kickstarter, and awesome titanium pieces. Fortunately, this means I not only have a bunch of cool kit to play with on a semi-regular basis, as well as helping people get their ideas off the ground and into your hands, but also I have things to write about.

This is one such item, which I've been sitting on for a little while,This is another creation of Mike Bond, creator of the Sentinel s4s cache, the Sentinel X and the EDCPen (link coming VERY soon). This is the PB-9 Para-biner

The PB-9 measures 48mm x 111mm x 9.5mm thick (1.875" x 4.375" x 3/8") and weighs 100g (3.5 oz) and almost the whole thing is made from grade 5 titanium. This is the biggest of three variants, and features 9 tool options, being a very versatile tool.

There are two versions of the PB-9, in Imperial (SAE) and Metric, each offering a range of wrench openings:
SAE: 15/16", 3/4" 9/16", (5/8"), 1/2", 7/16", 3/8", 5/16", 1/4" (bit driver) MM: 24mm, 19mm, (16mm), 14mm, 13mm, 12mm, 10mm, 8mm, 1/4". I bracket out the 5/8" and 16mm wrench options because they sit in where the pulley pin and wheel reside, and I don't thing they are really accessible. the pins, split rings fastening them, the pulleys and whole assembly would need to be removed to have this option used. However, the pulley significantly outweighs the wrench need, in my eyes. Both feature a "hidden" 1/4" bit driver, inside the locking gate.

That gate is 12.7mm (1/2") or so wide, and features a hook-and-pin overlock, giving a really secure structural gate. Instead of a regular spring, the PB-9 features a torsion spring, cut from a piece of grade 5 titanium as well, as rustproof as the rest of the piece. Outstanding.

The PB-9 has two pulley options, both made from high strength bearing grade bronze 544 (The prototype pin was stainless steel, the production version is also titanium)

The single pulley option allows for lines up to 1/2" diameter, whilst the twin pulley was specifically for use with paracord. I found that it would take paracord, 3mm plastic coated clothes line, 6mm nylon sheath cord, and even the plastic coated braided steel cable from a laptop lock.


 Using two PB-9s with twin pulleys in a "double tackle" setup allows for a 4 to 1 mechanical advantage when lifting loads.
The tool also features a wedge shaped "Para-Cinch" notch for quick lashing of paracord (or as a bottle opener)

The non-pulley end also features a flathead screw-driver, whch could easily be used as a short pry-par, Mike even suggests as a box-opener. This tool has it all!




One of the things I loved about this Kickstarter was the engineering that went into it, and how that was shared. Watching the test-to-destruction clips of all three Parabiners was amazing. The fact that the prototype PB-9's broke at 1771kg (3,905lbs) is amazing. That's around the weight of a car! Having these tests, and subsequent improvements described along the way was a real eye-opener, and very heart warming.

Seeing the hooked gate go into the design, as well as the living/torsion spring enter the process really gave me a sense of being part of the experience, and has lead to an outstanding tool.All part of the Kickstarter joy.

If I had a gripe about them, it might be that the gate only opens 1/2" or so, which limits what I could clip them to directly. I certainly made do with braided steel cable, and could have used chain, just something I noted.

These are totally going into my bug-out kit, and I look forwards to being the guy with the pulley when it comes time to lift an obstacle.

Review: Ti2 Sentinel S4S cache

Following on from my brief review of the Ti2 SentinelX macro-cache  the maker, Mike Bond was kind enough to send me an example of his previous project, the Titanium Ti2 Sentinel "S" series.

This cache (seen here on a ring along side my other keychain toys the Jil Lite Constel LED microlight and my Cybernetic Research Labs Tactical Whistle.) is made from grade 2 titanium, purported to as strong as steel at half the weight, I must say, I am enjoying the booming Ti gadget boom that we are in.


This piece measures 0.5" x 2.75" externally, and has internal dimensions of 0.37" x 1"
The best part of the design is that it will open from both ends, a philosophy that Mike has passed on to his Sentinel X project as well. This means you can access the contents of your cache from either end, or clear a blockage.

As well as the water tight o-ring seal design. The threading is a custom square design, resistant to cross-threading, less susceptible to damage from dropping and turns eight turns to open into three turns, through its efficient mechanism.

There are fluted, ergonomic grip areas on both the end and tail caps, and the end cap has a large ring slot which can host a wide range of rings, clips, and lanyards.

The titanium has been stonewashed, it is corrosion resistant, sleek and satin finished, these are some very well machined caches. You should check the range here...

I found that the S4S was very small, too short for a needle and thread but perhaps it would work well as a pill fob, a stash for contact info. The longer and wider models would easily accommodate a lot more, but for me, I have filled mine with a very fine product from Black Phoenix Alchemy Lab's, for when I need to mask my natural scents ...