The Chicago Ace (tubular) lock is USUALLY easier to pick (with the right
tension wrench), since you have access to all of the pins, without having
to reach past a pin to get to another.
The commercial tools are just a tube with slots and sliders, with variable
friction. Almost trivial to make your own (as I did in High School),
although a well machined one will be a joy to use.
As such, sometimes just sliding that into the lock (WITH THE
RIGHT AMOUNT OF TORQUE) will get each pin to stop when it aligns.
Bumping seems more hassle for this.
As Dwight mentioned, picking or bumping without a pick tool that stays
aligned with the pins (like the commercial ones), opens up the additional
possibility of pins then coming back up and entering some other pin's
chamber.
The commercial tool ALSO leaves the sliders in position, so you can
"duplicate" a key from it. OR measure/read out positions to decode.
If you add calibrations to the commercial tool, then you can use it as a
temporary key for anything for which you already have the code (suc as
XX2247!)
On Sun, 2 Dec 2018, dwight via cctalk wrote:
Looking at how things work, there is a new method used to pick locks that works
a little to well. It is a thing called a bump key. To make one for this
cylinder lock would be tricky. Still, it could be done.
The principle is that you bounce the tumbler pins in, while holding light
tension. The inertia of the pins pushes the pins in. As they return, the tend
to catch were the would normally turn.
I've seen one on the web demonstrated. They are quite remarkable as to how easy
they work. ( way too easy )
The idea of making one for your lock is to allow the cylinder to only turn part
way between pin angles. Once it has rotated that much, you can then measure the
pin depth and make the key.
You could make one from a blank key and use a rubber washer to improve the
action. You'd remove the piece that holds the key in the lock and make a holder
block that would allow a partial turn so that it would stop, at the right
angle, between locations to make measurements for the new key.
It is not the traditional picking method but having seen it in action makes
traditional feeling the pins obsolete.
Dwight
________________________________
From: cctalk <cctalk-boun...@classiccmp.org> on behalf of ED SHARPE via cctalk
<cctalk@classiccmp.org>
Sent: Friday, November 30, 2018 6:07 PM
To: gu...@optusnet.com.au; cctalk@classiccmp.org; cctalk@classiccmp.org
Subject: WAS : Text encoding Babel. now PICKING LOCKS OR FINDING KEY MFR AND
KEY #
Yikes and I am complaining about trying to pick the lock on the UNIVAC
422 anyone have a key # for it? That type on that 8S looks tough...
Ed# www.smecc.org<http://www.smecc.org>
In a message dated 11/30/2018 6:53:34 PM US Mountain Standard Time,
cctalk@classiccmp.org writes:
And now, back to machining a lock pick for a PDP-8/S front panel cylinder lock.
http://everist.org/NobLog/20181104_PDP-8S.htm#locks
