Tuesday, May 10, 2011

Glass and Steel

One outcome of a recent trip to Florida to visit my parents was my father giving me his father’s pocket knife. The knife has come full circuit. My grandfather passed away by his own hand when I was in eighth grade. He was very sick, suffering from emphysema and was chained to a large green tank of compressed oxygen. I always felt I understood his actions as tragic as they were.



I didn’t know my grandfather very well. Relations between these two grandparents and my family were strained and I never knew what was the cause. I still don’t. It’s in the past, buried and dead.


I do remember he used to give me old foreign coins. He delivered soda to bars on Chicago’s south side and he used to find foreign coins that people tried to slip into the soda (?) machines. I’m still a little surprised about the prevalence of soda vending machines in the 40’s and 50’s. What do I know? I remember he was a junker, a collector of copper wire, lead and newspaper for scrap sale. Like many Americans he was green before the concept of recycling. At the time it was called making ends meet. He liked to make elaborate bird cages of wire that he slipped through holes he carefully drilled in little wooden bars. The cages were all painted silver and always reminded me of castles. I’m sure the birds weren’t impressed by their cages, but I was.


My father gave me the knife after the funeral. It was a three-bladed folder, with one broken blade, two excessively sharpened blades in a beat up handle. It was a crap knife then, but it meant something to my father so it meant something to me.
Where's the rest of the blade?
 When I moved out to my first job, I gave the knife back to him. I didn’t know what my life would be like, but I knew I’d lose grandpa’s knife. Since it meant more to my father than me, I knew he should keep it. And he did. Some thirty years later he brings it out. The warm moist Florida air hasn’t been kind to the knife.

“Here,” he said. “Take your grandfather’s knife back home with you.” I’m glad he still remembered it.


the little pen blade - gone!

It must have been a nice knife at one time. Brass liners, a nice metal shield in the white handle and silver colored bolsters. Grandpa sharpened the blades past usefulness and somewhere snapped the pen blade. I touched up the base of the two remaining blades, but I can’t see a maker’s mark on either blade.


Sic transit gloria mundi!






I’m cleaning out my garage and ran across several old glass knives. Oh! They aren’t what you think. They look like little glass triangles.


Used glass knives....


I used to make them by scratching a thick glass bar and breaking the bar first into a square. A second diagonal scratch and a split turned the square into two imperfect triangles. If you did it right you got an incredibly sharp straight edge on each half.

Glass knives and a little bar stock
You could do it with a carbide scribe and glass pliers, but it’s easier to use a machine. The machine? It’s called a glass knife maker, of course.


The broken glass edge is so sharp you can’t find anything sharper, but it’s fragile, very fragile. What are they used for? Despite their fragility, glass knives are used to cut frozen tissue so thin you can look through it. I used these knives to cut transparent sections of tires and to shape resin blocks and samples for the cryo-microtome. With a cryo-microtome you can cut samples so thin you can shine electrons through them. That’s very thin.


A few problems with that edge. It was brittle and dulled quickly. Left overnight, the edge (from absorbing moisture) would be dull and useless. Bump the sample into it a little too hard, and the edge would explode glass shards in your face.


Still, if you wanted to cut tissue, rubber tires, plastic and so many other things so thin you could see, literally see, through your section, you needed a glass knife.




Sunday, April 24, 2011

Weekend Adventure




I was unpacking my ditty bag and my little Swiss Army-style knife slipped out and splashed into the water-filled sink. I keep a little Kershaw with the ditties because of its multi-functions: two small blades, sturdy little scissors, nail cleaner and file, good tweezers and the all important fruit peeler. A hair blower and a little oil and the knife is as good as new.


I was unpacking from an overnight expedition to Camp Perry for the pop-up spring pistol match. It’s a fun match to raise money for the Friends of Camp Perry and run by the Ohio Rifle and Pistol Association or ORPA. The goal, worthy in my mind, is to improve the lot of service men and women stationed at Perry for tune-ups before shipping out. A very worthy goal.


It’s a fun match. Seven half-size humanoid plastic targets pop up and down forty times controlled by computer.


Nuff said!


Target rich environment




At most, two targets stand and you have to shoot them down. You get about 5 seconds per group, which is plenty of time to tactically engage each target with a pistol. Tactical come from a Latin word meaning ‘shoot the closest one.’ There are several scholars who believe the word actually comes from a different root meaning ‘make it black and cost more.’ What do I know?


I used to believe the targets had a steel plate behind them that sensed the impact and took the target down. This trip I stood in back of one (before the shooting started) and saw no plate, just holes.

It appears the plastic is a ‘self-healing’ material and the impact of the bullet vibrating the target is sufficient to trigger a response. It seems to work for .22 cal through .45ACP. Still, starting with a partially punctured green guy, adding 8 or more holes per target each relay, the 14th or 30th relay shooter starts to wonder, “Am I missing or am I shooting through a hole?”







No matter the score, it’s a fun time and we managed to eke out a dry and warm day. Friday was cold and rainy and Easter Sunday is cool and rainy, but Saturday was warm and sometimes sunny. But the wind!!

If you go to Camp Perry which is pressed into the shores of Lake Erie, be prepared for wind, wind and MORE WIND!




But truth be told (shooting anything .22 or bigger from 10 to 30 meters at a half-humanoid target), the wind isn’t a significant factor. I had a great time.

So is the Kershaw the only knife connection? Of course not. I know in our little group every shooter had at least one pocket knife.


SOG Spec Elite in pocket - Mouse gun in hand
(I asked...)


So I’m estimating there were at least 100 blades, maybe more at Perry. I know I had two.




Tuesday, April 19, 2011

Cosmoline Adventure

Everyone likes getting mail, so when the package arrived, I couldn’t wait to get it open. I suspected it was the sailor’s knife I recently won on eBay. I opened the package and found a cocoon of newspaper. When I sell stuff on eBay I try to pack the item so no damage can occur. After all, once it sells, I am sending it to its rightful owner so I want to be careful. So, seeing the wad of paper, my first thought was “wrapped the way I wrap things!”


Unrolling the knife revealed a grease covered slathered oval shaped object.  Well, there was so much cosmoline I wasn’t sure there was a knife present.


The time honored method of cleaning cosmoline from rifles is to stand in a hot shower in your skivvies and scrub the rifle with your toothbrush. Yuck…


I knew I needed a different way. I did find a site what showed a hot steam method and listed other methods of cleaning cosmoline.


http://www.surplusrifle.com/shooting/cosmoline/pdf/cosmoline.pdf


Partially cleaned - Now for the soak!


The best I’ve seen was a large two-tub ultrasonic unit at the Knob Creek Machine Gun Shoot. You just opened the bolt and placed it in one tub for half an hour and then into a second bath which contained a rust inhibitor and light oil for a second half hour. When you came back your rifle was waiting for you. The cost was around 25 bucks and everyone who bought a surplus rifle thought it was a deal!


I wiped the majority of cosmoline off with old newspaper and submerged it in a solution of equal parts:


Mineral spirits,
Clenzoil,
WD40.


Between an old toothbrush and a spare turkey baster, I cleaned off most of the cosmoline. The blade compartments were too deep for my brush, so I cut a strip of cardboard and scoured them out. Still, it required a lot of soaking. If I were smart I would have left it in the solution overnight, but I was too impatient to wait.


Nothing Like a good soak



I finally got the gunk out of all the nooks and crannies. My cleaning solution went from a nice clear green to a muddy, turbid gray. I was afraid to use it on anything else, so I disposed of it.


It took a lot of wiping with rags followed by paper towels but I got most of the solvent removed. I suspect it will have to wait for a sunny hot summer day when I can wrap it in newspaper and leave it in the sun while I work around the yard. It would not surprise me if more cosmoline worked free in the heat.




Well at least I don’t have to worry about oiling it or protecting the blade for awhile.

Thursday, April 14, 2011

Benchmade VS Spyderco

People ask, “What should I buy?  Spyderco Delica or Benchmade Mini-Griptilian?”

Good question, and as of now I don’t know which I would recommend, the Delica or the Mini-Griptilian.

First let’s ignore price.  It isn’t that I don’t want to get embroiled with deutschmarks, yen or dollars, but really,  the difference in money isn’t that much.

Also let’s ignore the stud option on the Griptilian.  That’s one less factor to compare.


Delica
Mini-Griptilian
Handle
Flat, easy to nestle in pocket
Round, more natural feel
Lock
Spine, requires changing grip
Axis, just needs a free thumb
Clip
Movable to all 4 positions
Movable, left or right only
Steel
VG-10
154 CM, option of 440C
Weight
2.5 oz
2.56 oz
Blade Length
2.87 in
2.9 in
Handle length
4.25 in
3.87in

Well, that certainly makes it easier, right?  

Benchmade Mini-Griptillian with the cool reptile shaped blade


Truthfully, no.  I like the natural feel of the Mini-Griptilian.  The handle swell fits my hand and my wife’s hand equally well.  I like the flat thin Delica as it fits my pockets better.  Both knives open well but the Mini-Griptilian has a slightly smoother opening and a much better closing.
I prefer tip-up carry and I match the knife to either right or left pocket.  Either knife works for me.

Blade length?  If I can’t get most of the jobs done with either blade length, then the job calls for a specialized knife.

Weight?  If you can tell the difference between the knives based on weight, you are one sensitive dude.

I’m not a steel junkie.  Yes, there are some very special steels that give you incrementally better performance, but could you tell in the double blind cutting test?  I’d wager you could with sophisticated testing equipment.  By hand?  Nope!

Spyderco Delica

So where does this leave me?  I gotta go Spyderco.  Mostly for emotional reasons, these knives are tied to me.  The Delica was my first tactical knife.  My first published article was about a Spyderco.  My favorite tactical teacher carried Spyderco.  The first knife I gave my wife was a Spyderco.  And most important, they are completely dependable.

Benchmade, it’s a great knife.  My wife carries them and loves them.  So it remains your choice.  If you can’t decide, well, that’s nature’s way of saying buy them both.

Mini-reptile, not Griptilian.   Hard to fit in pocket or open

Monday, April 11, 2011

A Number Game

All blogs no matter the topic, knife, airgun or apron wearing, all blogs attempt to attract readers. We write blog, therefore we seek an audience. And bigger is, in this case, better.


Let’s cut through the mumbo jumbo and stats we get from blogger or wherever you get your numbers.  We all feel this way sometimes.



Take it away Stephan Pastis’ Pearls Before Swine




Sunday, March 27, 2011

A Carry Knife To Remember


One of the more innovative knife designs, in my opinion, is the TDI knife made by KA-BAR.  This small fixed blade knife is the brain child of John Benner, the president and chief instructor of Tactical Defense Institute located in West Union, Ohio.
The original TDI Knife with reversible clip sheath


The previous mythos was while struggling to retain your firearm against one or more thugs assassins (let’s be real – they get your gun, you’re dead) you would take your free hand, reach down into your pocket, slide the knife clipped there out, open it and strike your opponent with the business end of the knife.  I’ve trained it and it doesn’t work very well.

John’s idea was a small fixed blade that would be practically invisible behind an officer’s reloads and could be taken out by grasping the handle and cutting your way to safety.  He wanted something that a person could strike hard and fast with and not have to hold back in fear of injuring himself.  

The short bladed, curved handle knife with clip sheath has become a favorite of LEOs and armed civilians.  I have carried mine for days at work and nobody paid any attention to it.

Recently I have been hearing about a folding TDI knife.  Part of the problem was designing a lock that would hold the knife securely open, not accidentally close while fighting, and still have that curved handle to prevent you from sliding up onto the blade.

It’s been introduced.  Called the TDI Sidelock, KA-BAR has introduced a folding knife modeled on the TDI fixed blade.  The handles are G10 and the knife is set up for tip-up carry.  You can switch the pocket clip to left or right carry.

The TDI Sidelock -- Bigger bladed, stout design but … better than the original?


Yes, it’s made in China, but it has KA-BAR's quality and knowing John, he would never let his reputation ride on crappy workmanship or materials.  The blade locks open with a stout liner lock.  The lock has a low profile to prevent accidental closing.

It’s a fighting knife.  Oh, sure you can use it as a letter opener, cut string and maybe make shavings to start a fire, but it’s clear what it’s designed for.  Take his knife class and you’ll see it in action and learn how to put it in action.  http://www.tdiohio.com/cqpc.htm#knife

I like it.  I think highly of John and everyone thinks highly of his school, but I’ve got to say the knife misses its purpose:  To draw an edged weapon efficiently, quickly and immediately deploy it to save your life.  The only justification I can see is not being able to carry a fixed blade.  Once the blade is deployed; you have a powerful tool for self-defense.  I already own one.

Monday, March 21, 2011

Jail House Knives

A lot of my coworkers find the monthly safety meeting a complete waste of time, except for the donut you snag after you sign in.  I don’t share that view.  Safety meetings have a lot of useful information.  Sometimes they remind you of how insensitive companies can be and other times it can be quite amusing.

One of our departments uses homemade utility knives.  Picture a foot long, one inch wide strip of steel.  Like from the duct work in your house. Now bend it in half.  That’s the body of the knife.

Image a second piece of the same material, but this one is a 1x2 inch rectangle.  Fold it short ways over the back of the knife body so that about half inch of metal overlaps from the back to the front of the knife body on both sides.  This forms a locking buckle that can be slid up and down.  That’s the knife, almost.

Slip an industrial utility knife blade in the front of the knife, slide the buckle forward until the extra thickness of the utility blade jams the buckle and ...Presto! a homemade utility knife.

They showed a picture of it.  It was the nicest prison shank I have ever seen!  The buckle was made from brass, so little tapping with a hammer tightens it up nicely.

The back end of the blade is exposed to your fingers, but that didn’t seem to bother anyone.  I know a lot of people wear the cut resistant yellow Kevlar gloves at work, so maybe they figure, what the heck.

The company is now going to replace them after a worker took a swing at the plastic sheeting that  pallets come wrapped in, missed and cut  his arm.  The only question from the workers was, “Are they paying for new ones?”  The answer was yes, which made everyone happy.

Me, if I need a utility knife and the company didn’t pay for it (why else would you make a utility shank?), I’d buy one.  This seems a lot safer and easier than making a POS* knife.


Knife front:

I ran into a fellow who was shopping for a knife with a sub 3-inch blade at the last gun/knife show.  He didn’t find anything at my table, but I asked him why he needed that length.  Many cities have sub 1.5-inch or a 3-inch no serrations blade rule.  I was wondering if his company has a similar knife policy.  (Me?  I carry two pocket knives with different blades for different cutting conditions.  That’s my story and I’m sticking to it.)

Him:  I need it for work.
Me:  Where do you work?
Him:  The jail.
Me:  I’m surprised they allow you to carry a knife on the job.
Him:  Everyone is supposed to have a cut-down knife.
Me:  Oh! 

I’m still surprised about this, but police tell me most people in jail are on good behavior because they are going to trial and hope good conduct will buy them some juice with the courts.



*POS  'Piece of Shot', (dot the o)