Why Is There No Schlage "D" Keyway? [

Almost everyone is familiar with the Schlage "C" keyway. Some of you, after watching these videos this week, are now aware of Schlage's "E" and "F" and "G" keyways. But why does the series start with "C"? What were the "A" and "B" keyways? And -- most baffling to me -- why is there no "D" keyway?? Well, after a lot of searching, I finally found the answer!
I hope you enjoy #SchlageWeek !
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[@kevinhadley3779]

As a scientist, I love the Corbin Russwin D- and L- notation for their mirror-image keyways. I'm wondering if it's a deliberate nod to organic chemists, who sometimes distinguish mirror-image chemical structures using D- and L- prefixes. (The origin traces back to "dextro-" and "laevo-", Latin for right or left).

[@DeviantOllam]

oh my gosh i never realized that!!

[@DEATH_TO_TYRANTS]

As a Florida Man, I just know D-meth is preferable to racemic meth. And most definitely preferable to l-meth. The latter not doing anything for you iirc

[@ETC_Rohaly_USCG]

@Kevin Hadley, but if Latin, shouldn’t it be D and S? Destra (right) and Sinestra (left)? Hence the etomology of “Sinister”... when people thought that left handed people were somehow ‘evil’ If you wear glasses, look at the ‘scrip you get from the Ophthalmologist. It’s always OD and OS

[@DeviantOllam]

@@ETC_Rohaly_USCG that's another way of using the language, yes. Both are valid

[@cassandra2860]

@@DEATH_TO_TYRANTS laevo-methylamphetamine is sudafed, right? Pretty sure it clears your sinuses.

[@liamlucky2776]

Dev you're knocking it out of the park for those of us that thirst for this kind of 'compressed lockport' history but lack the time to pursue it ourselves. I would like to see you continue with the likes of Kwikset, Master and the 👍 like. Your format or approach presenting the 'curious' viewer questions like you did today on the missing 🔑 key formats was a great example of this. PLEASE keep this series coming 'bud 🙏 .

[@DeviantOllam]

I'm so glad folk have enjoyed this 😉

[@EdSileo]

@@DeviantOllam Freaking AWESOME series! Just pure knowledge dump and eccentric history (with a few rarities thrown in).

[@zfjames]

Yes, second this - please talk through other keyways...

[@JamesBakerOhio]

I'll third that.. Please sir, more keyways and details about them. Never gets old and the way you present the content makes in fun and sticky so I can remember it. Thank you for your obvious efforts and sharing your time and talent 👏

[@Kinkajou1015]

Why have C keyway when we can have Ͻ keyway? Also you are definitely in the same league as Alec. Just different specializations.

[@Jake9066]

I learned two things today: 1) what the "D" keyway is, and 2) that I'm already subbed to the three channels that got shoutouts

[@sgchatterjee]

Isn't it a great feeling to learn that there is a similar mindset out there? I enjoyed learning about the Inrange connection the most.

[@wobblysauce]

Not the only one.

[@invisibledave]

If you love dry humor, you will absolutely love Technology Connections. Go back and watch every video.

[@henrikoldcorn]

As AvE puts it: “make cool shit, put it on the Internet”.

[@wobblysauce]

Water them ducks.

[@sixstringedthing]

Keep Richard in the clamping device gentlemen.

[@aziraphalesshop]

I have suspicions that good old Uncle Bumblefuck is the Canadian alluded to at the end.

[@gjacobson76]

I was a locksmith for 11 years. I ran into a Schlage B keyway on an old house. I had to re drill the hole and install a new lock. The locksmith company I worked for started in 1905, and we did not have blanks for it. I used to run into the Schlage A locks. Those keys were punched on a special cutter. I used to encourage people to replace them. I find your channel very educational and entertaining. Keep up the good work.

[@bodhi-pickahfilecoinlurker5964]

I would cut A keys on a normal key cutter locked in the jaws. They would vibrate madly if you tried to do anything but a light cut. Cudahy Wisconsin is absolutely full of ancient homes and those locks were frequently encountered even in 2000s

[@JuneNafziger]

I’m going to have to look to see if the hardware store I work at has B key blanks, I know we have A, but I don’t know about B…

[@theprofessionalhobbyist802]

I'm really loving this week's content. I've often wondered why there was no D keyway and the first video explaining the various keyway differences was great. I know it takes time to dig into the "why" behind the way things are, and I appreciate your willingness to do just that. Thanks for putting all this together!

[@tfodthogtmfof7644]

It’s a fuzzy wall! It looked textured but knowing it is truly a big red furry backdrop makes it so much cooler! Massive furry muppet monster background makes me want to touch it. Lol. Thanks for all the awesome content Dev!

[@DeviantOllam]

Hah, that furry wall was a pandemic project with Tarah and I enjoyed it very much. 😁👍

[@wobblysauce]

What you don't realize is that he is really laying down and it is all magnets holding things on the table.

[@ethan2226]

The Schlage D Keyway is the Reverse of the C Keyway that is restricted. The D Keyway is part of the Reverse Family which includes the D, DQ, Q, QS, S, ST, T, U, V, X, and Y keyways.

[@JiSe6669]

So one could almost say that the D keyway is Deviant! Thank you for a great series.

[@DeviantOllam]

👍😁👍

[@phyphor]

I saw you shout out to Tech Connections on Twitter, and it's good to see it here, too! You continue to be a true mensch!

[@knghtbrd]

Thanks Schlage for digging through your archives for this kind of historically interesting content! And it is interesting … it won't help any of us do anything except appreciate what's been done before. Stuff to know just because it's cool.

[@VeraTR909]

Cool that Schlage shared those blueprints and stuff ;) very interesting.

[@DeviantOllam]

Yeah it awesome to have cool friends!

[@SkitFireS]

In probably less than 10 years, this little video essay series of yours might be the go-to for schlage information. I've just started getting into locksmithing and your content has been invaluable, thank you for talking to a camera about what you love!

[@krazyx86]

You're such an uplifting and encouraging guy, Deviant.. Thanks again for all your work!

[@Breakfast_and_Bullets]

9:13 - "...courtesy of another person up in Canada, who is maybe gonna produce other metal things..." It's AvE. I'm gonna call it now, it's gotta be AvE.

[@DeviantOllam]

oh man now everybody thinks that is who it is. hahaha. =)

[@Breakfast_and_Bullets]

@@DeviantOllam Prove me wrong, Mr. Ollam! 😁

[@ETC_Rohaly_USCG]

Just changed out my neighbor’s “A” Schlage for a newer one. Can’t remember if a SC or KW, but my “payment” was a 1948, Gen1 Rem 11-48... lol *edit* might even be a “Gen 0” based off the S/N and stamps

[@antonvillalta9205]

Fun fact, Schlage letter keyways didn't end at L, they had a restricted reverse of all of the lettered keyways, super ancient stuff, there were a few hospitals where I'm from that used to use them. . . Then they got into the numbered keyways. you can find this stuff lingering around, especially in the San Francisco Bay Area, where Schlage was based. Including a d keyway plug.

[@Coderjo.]

"I could never hope to be as cool and as intelligent and as great as a lot of the creators I admire." But Dev... You are!

[@ericgoldman7533]

Aww heck yeah! A Technology Connections callout!

[@EyeMWing]

I am reasonably certain I have a Schlage A-keyway around here somewhere... Thing looks deadly familiar.

[@alexknouse9133]

This series is making a rough week at work manageable. The presentation, and tone of your voice, and the way you pog over all this obscure lock history is so relaxing and engaging.Thank you again Dev, you're going above and beyond as usual

[@Nite0wl]

You also showed the W keyway briefly (the example of the A series wafer lock where the key had a large trapezoidal head). It was a later addition to the Schlage Wafer family to expand the number of unique keying codes by simply adding a second key blank and keyway profile.

[@baylinkdashyt]

I do feel like I ought to point out that A and B batteries were the name of the *voltage* that was being put to use in those old battery powered radios for which those were primarily used... where as AAA, AA, C and D are *sizes* of battery; all are 1.5VDC nominal. And i don't so much mean voltage as "voltage rail"; I think A was filament, and B was plate supply. On reflection, this is almost exactly parallel, I think, to the A keyway vs A *series* thing with the Schlage locks: different namespace, even though the names are all single capital letters applying to locks.

[@ryanwilson_canada]

Im assuming when you say milled aluminum and in Canada, you are speaking of Ave. Lol. Not boring at all Dev. Keep it up. Hope everyone is staying safe, and taking care.

[@brandtharen]

I have a couple of A keyway keys that came from my grandfather's set of keys that must have been on a house door at some point in the 1960s or newer, I don't have the lock or handle set though. When I first saw it I was very confused having at that point only ever seen C keyway Schlage locks and keys.

[@BlackSoap361]

Just think, if D is reverse of C, they could make reverses of all the other letters. A maison-keyed reverse P keyway. Collectors would go nuts.

[@cbjonsey5785]

EIther AVE or this old Tony made the aluminum pinning trays

[@Christian-cz9bu]

I'm sorry Dev you're wrong... Everyone needs a furry wall. ;)

[@Trickyni]

"Why is there no D?"- My friend, a trans guy, would like to know as well.

[@tacticalgeek7513]

I can remember when I was a kid, we lived in two separate houses in the L.A. area that had Schlage "A" keyway front door knobs. I remember them distinctly because of the shape of the key and they fascinated me to no end. Please produce other videos like this because I love the premise. I learn a lot and also have a lot of my nagging nerdish questions answered in them. BTW, just ordered the SC-20 Lishi and it looks like it'll arrive on Monday. Can't wait. On another note, have you traveled on Amtrak and wanted to be able to lock the sleeper 'bedroom' when you leave the cabin? I heard that they can't be locked from the outside. Any thoughts?

[@ponderinggeek7861]

There's also the Schlage D series of keyways in the Everest line. Unlike in the Obverse keyways, the Everest C keyways don't mirror D. But that's a whole other story 😀

[@ETC_Rohaly_USCG]

Love the shoutouts to all! The fact you gave Technology Connections a shout, I know you follow Techmoan... I binge on them both almost every day!

[@Vares65]

1:29 Oh wow, as soon as I saw the A lock I recognized it from my childhood. It was on an interior doorway as I recall, like a laundry room or something. Even as a kid we knew they weren't very secure. Think I could pop it with a paper clip. Cool to learn about it, thanks!

[@kudui21]

Thanks. I after you revealed secret of the d keway I've laughed so hard that i had to explain to random people in park why I laugh like a maniac.

[@BrentKiley]

Loved the video and all your videos! So just curious, where is the security in the reverse keyway? Just the fact that finding key blanks would be harder so doing a duplicate would be harder? So you are guarding against someone just making a key from measurements? Never picked a lock before, but I'm guessing if you could pick the normal lock, the reverse wouldn't be any harder to pick?

[@DeviantOllam]

yes, it has to do principally with differentiating the blanks. by restricting the flow of blanks during the period that the profile is under patent, this affords some means of controlling whether people can make keys.

[@DiphonFX]

The house I grew up in had an A keyway on the front door.

[@MrKalashnikov47]

Ive never even attempted to pick a lock, aside from when i play fallout, but thats only because im an hvac technician and i always have a cordless angle grinder. But my god these videos are intriguing to any mechanically inclined observer with a thirst for knowledge 👌 thanks!

[@Biped]

Hell yeah! Could you please continue to share some of the channel gems that you watch? I never heard about technology connections (strange, huh? That's the power of the content bubble) and I'm very glad you brought it up!

[@StrokeMahEgo]

7:10 "the magic of buying two of them"

[@saltyroe3179]

2 dimensional lock. Way back I got involved with how things would work in a 2 dimensional world. I designed a 2 D elevator, another guy designed a 2 dimensional lock! Both would work in 3 dimensions. I will have to find the monograph where both were published so you can look at the lock design.

[@lightningdemolition1964]

I think those are the kind of locks they use in flatland.

[@brunojohnson4026]

I was definitely expecting an explanation a la Demitri Martin (he's got a bit about battery letters)

[@DeviantOllam]

Yeah, I enjoy him a lot!

[@derekbroestler7687]

This series of videos has been awesome for me on a FEW levels, as a locksmith, as a locksmith for whom Schlage is usually my go to recommendation for most applications, and especially today as a locksmith who also specializes in antiques, because I too geek out on obscure lock history.... I'd always just assumed that the Schlage A keyway was in fact the old wafer design, but never had confirmation from a reputable source before. Just like I'd always just assumed there was a Schlage D, but that it had been discontinued, but it's awesome to know exactly what it IS after all these years. The JMA YA-17D COMPLETELY blew my mind.... I don't deal with JMA products much (because, well, ANOTHER set of terminology to learn and I've never had a situation where JMA was the only source for a blank before).... THIS brings up the legal question though... Does that mean that I, as a locksmith, can actually copy keys for customer's mailboxes and PO boxes that use that key blank, LEGALLY??? I get asked about every two months and I've always just told the customer "No, you HAVE to get them from the USPS, same with the locks, I'm not even allowed to touch the mailbox if it's got that lock on it" That's what I was taught by the locksmith who taught me, that's always been the conventional wisdom with every locksmith I know, and considering that if it IS illegal, it's GONNA be a felony and USPIS is one of those agencies you ESPECIALLY do NOT want to land on their radar.... So it never even occurred to me to ACTUALLY look into it... Now I'm thinking I will, even though I already got a funny feeling the local Postmaster is gonna be less than helpful on that call... lol Thanks again for the great content!!!

[@JuneNafziger]

3 years late but I’m guessing that you can’t touch the *mailbox* because that’s a whole can of worms with fraud and theft, but you might be able to copy the keys. I know my job carries a few postal keys, but maybe not the reverse Y1…

[@derekbroestler7687]

@@JuneNafziger Yeah the reverse Y1 USPS DND key is specifically what I was referring to. I do have loads of CompX / National mailbox key blanks and replacement locks (including the USPS CERTIFIED locks), as well as other assorted brands and I can service all those no problem. What makes the reverse Y1 different is that boxes with those locks are property of USPS and so they're legally PO boxes even if the customer doesn't have PO BOX in their mailing address. That situation is THANKFULLY getting more rare, even in the three years since this comment, but it still happens every once in a while, typically in older condo and apartment complexes where I live. Oh, and BTW, I DID call the local postmaster after this comment and got a "I don't know" and got escalated about 12 times without an answer, so I finally just gave up. So even today, minus getting a direct answer from either a lawyer, or the Postmaster General of the US, in writing, I still won't do it just because it's not worth the hassle if it turns out that while I can PHYSICALLY do it, it's not legal, especially when the cost of giving a blanket "I'm sorry, you have to go through the post office" only costs me about $250 a year these days.

[@JuneNafziger]

@@derekbroestler7687 I actually just looked while I was at work today, and we do totally have the reverse Y1, it’s stamped as Ilco 1016 P1, so it’s at least out there, no clue about legality though.

[@derekbroestler7687]

@@JuneNafziger Interesting.... I'll have to keep that in mind, thanks for the heads up!!!!

[@TheMyname707]

7:08 You mean by the magic of buying two of them, he sometimes has more than one item? ✌️ BTW I clicked thumbs up three times. Didn't hurt.

[@DeviantOllam]

so did i on your comment!

[@cathedrow]

Machinist? Canada? Who could that be. Any idea, Dewclaw?

[@DeviantOllam]

hah i wish it was Uncle Bumble and his nutfucker crew. That'd be rad. This is a fellow named Luke, though.

[@PS.Lomedhi]

i truly enjoy deep histories of things, and I’ve been digging the Schlage deep dive.

[@TheKhopesh]

The reverse keyway thing as a security feature kinda seems silly to me in a world where solder exists. Like, if someone's going to break into your facility with all the prep work of buying a blank key, picking/finding that lock's pinning values, and cutting their own key for it... Then surely they could just buy 2 of the wrong-direction blanks, cut the blades to length, solder them together (for more surface area, don't just cut straight down, cut or sand it on the flat side at a sharp enough angle that when you've matched them, the faces have LOTS of surface area contact for the solder), carve the excess solder out from the contact points once it's hardened, cut a new key tip angle, and just like that you have a key blade long enough to fit +6 pins! Now you can cut your biting, maybe fancy it up with a proper bow if you REALLY want to, etc. When you provide it's perfect mirror opposite, the reverse keyway really doesn't do much to stop someone who's determined to have a working, "proper" key.

[@DebakulumToughguts]

👍

[@sillygolf14]

If you ever think of another interesting video like this please produce it this was great

[@DeviantOllam]

thanks! i have wanted to tell this story and i'm so glad to finally have a satisfying answer!

[@maxmyzer9172]

[@halstewart8096]

If Allegion would put those redacted dimensional drawings on a poster I would absolutely buy one

[@DeviantOllam]

i know, right? they said that's unlikely because they are still technically their IP, etc. i was only able to show them if i made the redactions. it's cool seeing the originals, though!

[@curley6531]

very cool information all about schlage!! who would have thought...........thanks

[@ColinRichardson]

So two different companies used D as a mirror image? coincidence? COINCIDENCE??? ... Yes.. Yes, it's a coincidence..

[@jasonperry6046]

I have been loving this week's content. Can't wait to see what is next. Thanks to you I am the go to person in my family for all things locks. Everyone has an Abus 83 series and slowly everyone is moving over to schlage keyways.

[@cdigames]

Fun fact, I live in an apartment building built in the 60s with Schlage "A" series wafer locks and keys for the door handle locks. Now in the 80s everything was supplemented with Kwikset KW1 deadbolts.

[@ericapelz260]

Many years ago, I was the maintenance technician for an apartment building with Schlage A lock sets. With as worn as they were, kids could pick them. Before I left that job, I replaced most of them with Kwikset Titans. I could rekey an apartment about as fast as I could open the door.

[@jamess1787]

INTERNATIONAL ELECTRICAL OUTLETS TICKLE MY FANCY. Btw: very spookey similar channels that we follow ... Very very crazy. (Your channel was probably recommended years ago because defcon and Bosnian bill). 😇 👍👍

[@twiceineverymoment]

A and B were reserved for floppy keys, just like drive letters A and B on Windows/DOS

[@sketchyAnalogies]

'And through the magic of buying two of them...' love Technology Connections

[@monraet]

This video made my day. Collected locks and keys for over 40 years and never seen a Schlage "D" Keyway. Thanks Deviant.....

[@shieldcracker]

The best video in the series. I have learned new stuff. Here is some conjecture... Schlage invents the cylindrical lock (A-series with and aptly names the keyway A for its wafer cylinder) next Schlage produces the Deadbolt bored lock (B-series perhaps with keyway B for its pin tumbler cylinder). Do you know which lock used B keyway and if a C-series lock actually exist? I have never seen either one...

[@62Cristoforo]

In Canada the Schlage ‘D’ keyway is reserved for Royal Canadian Mounted Police use (RCMP), according to a master locksmith I know. Someone came in to the shop once, looking for a duplicate. Not without a signature. Now, about those B sized batteries ....

[@samlott99]

I've been extra curious about the "P" keyway, and the reasons for P key blanks lack of availability. Here's an unexpected coincidence. Awhile back, I bought some assorted locksmith items from a retired locksmith. There's a small envelope that contains 5 key blanks. The envelope is marked "35-101 P blanks." Question: As all the keys will fit in a P key way, will a P key fit in multiple key ways. Anyone know? Deviant?

[@DonOblivious]

buncha youtubers I'm already subscribed to. Can confirm they make good videos :)

[@sigmaman5562]

According to one of the lock industry magazines-many years back, naturally-there was an article on the Schlage reverse keyways. I do not remember them, now, but I believe it began with “X” amd went down from there, in the same sequence, just reversed. If I can dig up the magazine then I will e-mail you photos of it. I have never seen one in real life. I have seen the letter keyways, of course. And the numbered keyways, many of which have look-a-likes/copy-key versions. I also have a few blanks, and even a padlock and key, of some 4-letter keyways. VTQP, and the like. Most is in storage, but the KS43 and its key I can photograph-right now-if you want.

[@redjoshman]

Is the 'P' keyway large enough to accept a 'D' blank? And similarly, does the SC-20 work in the 'D'? I didn't catch if you said so or not?

[@vipe_toutonche]

There is a keyway that is a dead ringer for backwards SC that is used around me for USPS locks. Also, SC is backwards Best A, so an A blank would probably go into Schlage D

[@georgeblair7129]

kwikset plugs and schlage f Series plugs are not fully broached.

[@adamkelly6264]

surprised myself by yelling ITS A BACKWARDS C! And that's when I knew I was a nerd.

[@OrginalDravas]

Neat stuff

[@ssprinklep9107]

How do I find more KZbinrs and talks on these things? I was lucky finding Bosnianbill and red team, but I want more! This has has changed my life!

[@kasper_429]

Well I wasn't expecting that explanation as to why there's no (at least commercially available) D keyway, but that's awesome! Never thought about something as simple as just flipping the keyway shape around. Ingenious. Have you thought about doing this series, but with other brands like Kwikset, Yale, etc.? That could get interesting. I love learning about neat obscure stuff like this, especially as a locksport noob lol.

[@bowlsallbroken]

I am (not)bored by all the Schlage content 😁. Anything (lock, key, blank) with that "D" keyway would be one hell of a collector's item...

[@Wombbatts]

My front door of the house I grew up in was built in 1957, it had a Schlage A keyway knob. I have only seen one other example of an A keyway lock, and my front door key opened it.

[@chrisdwalter]

@DeviantOllam I could watch lock videos all day long. I love this stuff and have been doing it for years, reverse engineering master keys both from change keys and from multiple cores with no keys. I started my own locksmith business in MN to further my skills.

[@grant_HH]

For the Dom/me's surely sub keys are something completely different?

[@roberthiggins1142]

Being in Australia we have Lockwood which is i spose the Schlage of America, But after what you were saying about the "D" Keyway do you know if Lockwood has ever do it??

[@kylecorey88]

I am a locksmith. .and most schlage blanks excep sc1 and sc4 , I have dozens of the other blanks I rarely even use.. the sc20 wafer blanks I got a tonne that will never be cut lol

[@DigitalArchmage]

Lishi question - I'm a total newb, so I don't know if this lock I have in my hand isn't being picked from lack of skill, or because it's 6pin and I only have a 5pin lishi. Is there a way to tell without trying to insert the longer one that I don't have, followed by the shorter one? I'm pretty sure it's a 5pin - i need to go watch some more tutorials. Too much pressure, not enough pressure, I don't even know. :/.

[@n3wSong54]

3:50 - This is the best use of foreshadowing/video editing magic I've seen in awhile. Accept my applause.

[@DeviantOllam]

😊

[@greghoneycutt]

I'm loving it, and anxious for some yale stuff. My facility is yale...unless you want to do some amag/symmetry videos.

[@jessthemullet]

Small Town business family, we have a group of plumbing/service guys that work for us. Over the years, some of the old-school residents would actually leave us a house key so we could go in and work on something for them. That practice is by and large a thing of the past, but we've got a drawer full of keys. Most of which have names on them that have been dead for longer than I've been alive, and houses have been demolished, built, and demolished again in the lots those keys initially belonged to. I recognize the Schlage A key, though. Even with that drawer full of keys, there are only a few, but we kept them because they were interesting keys. (that definitely don't fit anything at those addresses anymore)

[@soranuareane]

Absolutely love the content. Is this video a little quiet for anyone else, compared to the rest of KZbin? It seems to be the case with the majority of Dev's videos too. If I'm not being misled by KZbin making this video quieter than it should be, perhaps you could increase the gain a bit on the final piece? Now, if it's fine for everyone else, please ignore this.

[@CM-mo7mv]

Cool thing also d like dexter (right) ... thanks for sharing. however I wonder did it never occur to them, that you could always source a left one blank and cut it down to use it backwards?! (essentially flipping the key too ) but then again it is about the time and effort you have to spend on a lock. PS I get your notion on the other YTs.

[@cursedvoid]

I am thoroughly enjoying all of the interesting knowledge that you have on keyways. Also might as well give you something in return, so now i present to people in the locksport community with "Shlagavulin" Whiskey and locks all in one, Do be careful not to swallow the pins.

[@markotb]

Schlage D, that is very cool. Im enjoying this series, thanks Deviant.

[@Dabbleatory]

Today's video from CLK ("The BEST Secret PJ Didn't Even Know...Do You??") totally blew my mind! Best A is reversed Schlage C. Which means I've seen and used a D keyway many many times without even knowing it!

[@Melds]

Does the Lischi SC4 only fit in the C keyway, or can if fit in close neighbors? Some of those keyways look pretty similar if there's some play in it.

[@gregiep]

I’m looking forward to you explanation of your pinning tray design.

[@Agent-un4qn]

As soon as i saw they were blue prints i was like "write down the numbers write down the numbers!" and then I saw they were all redacted, I feel like schlage might know your audience too well

[@nrowlett]

I'm still loving this! Thanks Dev & Everyone who helped with this! - I'm sure some of us (me included) thought we understood the Schlage keyway world. It's so simple, right? Haha.. Only to have had the idea of; "yeah that makes sense". Just pulled out from under our feet. Love the knowledge, and history.

[@DeviantOllam]

i'm very happy with it all =)

[@curtolocknkey]

History is very important. I try to remember how I screwed it up last time so I screw it up differently this time…🔐

[@deimosian]

Hey Deviant, the contest website says duplicate entries are not stored... are changes to some fields stored, for instance a change of address?

[@johnfrahm1313]

I have 2 schlage d keyway cylinders and 3 keys for it.

[@Hymensintact]

I'm really enjoying this series. Lots of neat information in these. I'd love to see some kind of series from you that utilizes every day items as "tools" for bypass or picking. As an example, is it possible to pick a lock with a men's grooming kit? Or What could you use in the field to make a replacement key? (Having seen people make them out of a piece of thin plastic and then cutting the shape of the key) Could use the comments section as a "Will it pick?" Type of challenge.

[@tjohnson4062]

The hilarious part of this is thst my building still has many of these A series keyway.

[@john.f.chamberlain]

I swear I’ve seen the “D” keyway somewhere before, I’m pretty sure it’s one of the locks on my parents house…

[@mikehooper3392]

But you are cool and you are presenting it right now this has been a wonderful week of learning thanks again

[@michaelrogers3857]

So when i see that flow chart of the c key way and the e f and g, but then a ce key will work on both c and e and the fg works on f and g, but it doesnt stop there. The next step or maybe the next too steps there is a key that shows it works on every keyway because its so thin. Where do i buy this key?

[@agesteiro7326]

How do we increase security cheap? We just flipp the keyway. Genius.