https://stream.echo6.co/videos/watch/d07e1847-15fd-4bf7-9992-0c158d3935f4 In this video I take on a hand-built master lock M5 challenge lock from Bill Clegg that is clearly designed to defeat picking attempts. Bill reversed the actuator mechanism to the lock only opened in the CCW direction, backwards from normal. Whipped videos highlight custom made locks sent to the LockLab as a challenge. They contain innovative modifications, unique security designs, and careful craftsmanship. Challenge lock design is difficult, to say the least, but many LockSporters excel in lock design and hand craftsmanship. Because there is such innovation among LockSporters, many manufacturers pay attention to the WHIPPED videos and incorporate the security techniques into their own locks. There is only ONE RULE: The key must work. You are free to cover up the key to prevent me from seeing it until after I successfully pick (or fail to pick) the lock. I will make THREE 10-minute attempts (down from six 10-minute attempts in April 2018). If I fail to open it in that time, it will become a WHIPPED video. If you are interested in sending a challenge lock, please use this address: LockLab P.O. Box 2160 Merrifield, VA 22116 Like this video? Subscribe here: https://www.youtube.com/user/bosnianbill?sub_confirmation=1 👇🏻Links👇🏻 ⭐ Support LockLab on Patreon: https://www.patreon.com/bePatron?u=2912724&patAmt=1 ⭐ Support LockLab through Paypal: https://www.paypal.me/LockTube Visit the Tribe’s website at: https://www.Lock-Lab.com LockLab’s Modular Lock picking courses: https://www.lockpickshop.com/Bosnian-Bill.html Looking for tools? 🔹 MultiPick Services - https://shop.multipick.com/ 🔹 Sparrows Lock Picks – https://www.sparrowslockpicks.com 🔹 PickPals – https://www.pickpals.com.au 🔹 Lock Pick Shop – https://www.LockPickShop.com 🔹 UKBumpkeys - https://www.ukbumpkeys.com 🔹 LockPickWorld - https://www.lockpickworld.com 🔹 Brockhage - https://www.lockpicks.com/ 🔹 SouthOrd - https://www.southord.com/?utm_source=locklab&utm_medium=display&utm_campaign=displayad 🔹 My vise is the Panavise model 350. – https://www.panavise.com Outro Music 🎵 Music from Jukedeck - create your own tunes at http://jukedeck.com Hashtags #Bosnianbill #LockLab #LockPicking #Lock-Lab -~--~--~- Please watch some of my other videos! My Channel Main Page: https://goo.gl/EYz5x8 Most Recent Upload: https://goo.gl/wEr5UZ Most Popular Upload: https://goo.gl/cbpSKw My "All of Bosnianbill's Videos" Playlist: https://goo.gl/R7p5M2 The "High Security & Challenge Locks" Playlist: https://goo.gl/GKkESM -~--~--~- Mon, 04 May 2026 01:25:51 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/d07e1847-15fd-4bf7-9992-0c158d3935f4 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.