![[135] Tutorial - Master rings, moguls, pin states, and maths @MichaelMaynard](https://i.ytimg.com/vi/cccU3Xf5HPE/hqdefault.jpg)
Uploaded April 2018 | Updated September 2026, 6 hours ago
Ever wondered how a master ring works?
Ever wondered what a lock "leaking information" means?
Ever wondered why locks with master wafers are so easy to pick?
Ever wondered what your statistical chances of raking a conventional five pin lock are?
Ever wondered how Folger Adam (and others) make prison locks harder to pick BUT still able to accept master keying?
All this, plus a five pin lock that the Gorilla hasn't even got a key for and can't even pick.
Ever wondered how a master ring works?
Ever wondered what a lock "leaking information" means?
Ever wondered why locks with master wafers are so easy to pick?
Ever wondered what your statistical chances of raking a conventional five pin lock are?
Ever wondered how Folger Adam (and others) make prison locks harder to pick BUT still able to accept master keying?
All this, plus a five pin lock that the Gorilla hasn't even got a key for and can't even pick.
![[135] Tutorial - Master rings, moguls, pin states, and maths](https://i.ytimg.com/vi/cccU3Xf5HPE/mqdefault.jpg "[135] Tutorial - Master rings, moguls, pin states, and maths
Ever wondered how a master ring works?
Ever wondered what a lock leaking information means?
Ever wondered why locks with master wafers are so easy to pick?
Ever wondered what your statistical chances of raking a conventional five pin lock are?
Ever wondered how Folger Adam (and others) make prison locks harder to pick BUT still able to accept master keying?
All this, plus a five pin lock that the Gorilla hasnt even got a key for and cant even pick.")
![[123] Mul-T-Lock MT5+ Rim Cylinder picked](https://i.ytimg.com/vi/dUCs20LioHQ/mqdefault.jpg "[123] Mul-T-Lock MT5+ Rim Cylinder picked
This one started out as an out of the packet pick...didnt quite work out that way and for a while the Gorilla got his arse kicked but we got there in the end.")
![[179] Tutorial - Picking Assa thin lipped spools](https://i.ytimg.com/vi/dZ6-RSij7Vs/mqdefault.jpg "[179] Tutorial - Picking Assa thin lipped spools
The newer Assa Abloy sharp edged spools can cause folks trouble...but theyre actually pretty easy to pick. This tutorial tells you how its done.")
![[174] Making a cutaway Lexam 1548 safe lock, and a stand to go with it.](https://i.ytimg.com/vi/eHYB7nPhlZQ/mqdefault.jpg "[174] Making a cutaway Lexam 1548 safe lock, and a stand to go with it.
I need a quick and dirty safe lock cutaway for filming for a talk at OzSecCon 2019. I use this Chinese Lexam 1548 (an obvious La Gard knockoff) and learn a whole lot along the way.")
![[47] Sparrows Warded Pick Set review and giveaway](https://i.ytimg.com/vi/eICXFW8TnAQ/mqdefault.jpg "[47] Sparrows Warded Pick Set review and giveaway
[47] Sparrows Warded Pick Set review and giveaway")
![[51] Review - Abus 83/50 picked and disassembled, I like this lock.](https://i.ytimg.com/vi/eIHJqwQQ5PI/mqdefault.jpg "[51] Review - Abus 83/50 picked and disassembled, I like this lock.
[51] Review - Abus 83/50 picked and disassembled, I like this lock.")
![[145] Review and pick - Cisa 285/85 - all padlocks should be like this](https://i.ytimg.com/vi/ebrRxV97t8U/mqdefault.jpg "[145] Review and pick - Cisa 285/85 - all padlocks should be like this
The CIS-28584-KD is a fantastic heavy duty padlock with very few weaknesses. For around US$100 there is nothing to match it and I was very pleased to finally get it picked.")
![[69] Medeco Biaxial 4 pin picked and disassembled](https://i.ytimg.com/vi/edxEQKM7oig/mqdefault.jpg "[69] Medeco Biaxial 4 pin picked and disassembled
[69] Medeco Biaxial 4 pin picked and disassembled")
![[168] First look - The Cei 385T - a construction keyed Mul-T-Lock MT5+ clone (sort of)](https://i.ytimg.com/vi/gYSRAH9irMI/mqdefault.jpg "[168] First look - The Cei 385T - a construction keyed Mul-T-Lock MT5+ clone (sort of)
Ive never seen one of these things before, and neither have you - its a top of the range lock made for the Chinese domestic market. We strip it and find out that its not as good as it looks, and we learn a bit about construction keying. With massive thanks to Frank, who put me on to this lock and bought it for me in China.
The sales video is here if youre interested:
https://www.youtube.com/watch?v=PbNiAejTnO0")
![[98] Review - Peterson City Plus and DCAP sets - do not buy](https://i.ytimg.com/vi/h4hJs4qzcCw/mqdefault.jpg "[98] Review - Peterson City Plus and DCAP sets - do not buy
[98] Review - Peterson City Plus and DCAP sets - do not buy")
![[122] Review - Peterson otoscope and HUK fibre optic 120 lumen flashlight](https://i.ytimg.com/vi/h5v0RIuPF7I/mqdefault.jpg "[122] Review - Peterson otoscope and HUK fibre optic 120 lumen flashlight
The Peterson Otoscope and the HUK fibre optic flashlight both try to help you look inside a lock. One does a far better job than the other, and is far cheaper. The cheap USB so-called endoscopic borescope inspection camera gets a dishonourable mention as well. Its junk.
https://www.thinkpeterson.com/cgi-bin/commerce.cgi?preadd=action&key=OTS-2")
![[91] Tutorial - Group 2 safe locks, the cam, part 3 of many](https://i.ytimg.com/vi/hG5TthtamdI/mqdefault.jpg "[91] Tutorial - Group 2 safe locks, the cam, part 3 of many
[91] Tutorial - Group 2 safe locks, the cam, part 3 of many")
