medeco/chubb m3 bump keys

[Rickthepick]

I see lots of vids on medeco bumping but i havent seen it done without knowing the sidebar code.... so technically its only half way there.

Im not keen on carrying bump keys as it is let alone one for every sidebar variation in one brand of lock.

Is there no there no other way?

PM me

[femurat]

IMHO if you already know the sidebar code you're cheating 2/3...

Anyway, if you think about how medeco works you'll find out that there are no chances to bump it without the right sidebar coded bump key so don't expect a lot of PM.

Cheers

[Rickthepick]

thought i was missing something is all...

So basically that video of marc tobias and his 12 year old girl is just plain cheating.

[femurat]

That's the opposite of bumping: the original key is photographed and printed on thin plastic.Then it's hand cut. So the key has the right bittings but is missing the angles. This key has to be gently wiggled to "rake" the sidebar.

Cheers

[Rickthepick]

ah i see.
still no REAL solution then, other than picking (which im finding tricky)

[femurat]

Yes, it's not an easy job, but a medecoder or a groovegrabber helps a lot...

Good luck

[MacGyver101]

Anyway, if you think about how medeco works you'll find out that there are no chances to bump it without the right sidebar coded bump key...

While that is true (i.e., you need a properly-coded bumpkey), Marc Tobias' observation was that, by exploiting both tolerances in the lock and the fact that sidebar codes aren't necessarily entirely random, you need only a small number of bumpkeys, rather than hundreds (or even dozens).

[datagram]

I'd recommend reading "Open in 30 Seconds" by Tobias and Bluzmanis for more information. The jist of it:

1. Sidebar tolerances allow half cut angles to operate more than one rotation properly, dropping the rotations from 3 to 2.
2. Double cut keys allow you to accomodate for and aft pins simultaneously.
3. Actual sidebar code distribution is limited.

All this results in a small set of half angled double cut keys that can bump Medeco locks using sidebar codes found in the Medeco codebooks, i.e. the majority of them.

dg

[femurat]

I never use bump keys and I like to pick medecos, so this discussion is pure theory.

MacGyver101 and datagram: thanks for the input. Yes, I remember I saw the list of sidebar codes... it wasn't that long but I think a bump key set should include more than a dozen of different codes. I haven't thought about the 2 cuts instead of 3 and haven't read the "open in 30 seconds" book, so I defer to your experience on that.

Cheers

[sterry20]

the new pins cant be turned with the medecoder so even if one new pin is installed your out of luck

[GWiens2001]

the new pins cant be turned with the medecoder so even if one new pin is installed your out of luck

They are five years out of luck, as that is how long it has been since the last post.

That said, some of the older-style broached pins have been working their way back into use with Medeco. So your Medecoder may get some use after all.

Gordon

[Legion303]

the new pins cant be turned with the medecoder so even if one new pin is installed your out of luck

Those are actually quite old pins that Medeco never put into wide production for some reason.

[Vetal]

Hi, your technical assistance on the lock is necessary. Thanks.

[Squelchtone]

Hi, your technical assistance on the lock is necessary. Thanks.

Which Medeco keyway did you make your tool for? and does it set angles or just bitting?

Looks very interesting!

Thanks,
Squelchtone

[Vetal]

Hi, your technical assistance on the lock is necessary. Thanks.

Which Medeco keyway did you make your tool for? and does it set angles or just bitting?

Looks very interesting!

Thanks,
Squelchtone does it set angles or just bitting