I turn a Stainless Bolt into a Combination Lock

I turn a Stainless Bolt into a Combination Lock

In this video i'm turning a stainless steel bolt into a nice little combination lock.

I was always fascinated by those antique combination locks. I really like the design of them. A few weeks ago I bought one from eBay, but it turned out to be a cheap fake copy. I was really disapointed. Well if I can't buy one, then I make one myself. It was quite a challenge to get all the parts done and fit together, but the end result speaks for itself. I'm very happy how it turned out and I'm glad I made it.

I hope you like my work and the video.

Huge thank you to all of my Patreon and PayPal supporters and specially to:

Arthur Beaulieu
prahS Prods
Micky McKay
Adel AlSaffar
Alan Hanson
Amanda Taylor, Esq
Andreswara Hermawan
Andrew Phillips
Dan Williams
Joan Casanovas
Joel Miller
John Romero
Jonas Richartz
Jonathan Heckerman
Marc P
Paul Ambry
Paul Mampilly
Trevor Kam
Vince Valenti
Zachary Grimes


00:00 intro
00:10 cutting the bolt in pieces on the lathe
00:53 making the side plates of the lock
02:14 making the first pin, shaft for wheels (fix side)
03:46 making the second pin, upper shaft (fix side)
04:37 making the third pin, key (movable side)
06:33 making the fourth pin, upper shaft (movable side)
07:16 TIG welding the pins and side plates together
07:35 sanding and polishing the welded parts
07:57 filing the slot for the secure ring
08:16 making the wheels with numbers out of brass
09:16 etching the numbers with ferric chloride
10:52 knurling the whells with the numbers
11:48 making five tiny springs with 0.3mm spring steel wire
12:20 showing the five steel balls
12:24 assembling the wheels with the numbers
12:44 making a secure ring with 0.8mm spring steel wire
13:13 assembling the secure ring
13:21 showing the finished combination lock

Time and costs of this restoration:

I was working on this project over 2 weeks
$5 stainless steel bolt M20x70
$40 knurling wheel
$2 printing the numbers
$15 steel balls and spring steel wire

My camera:
Panasonic HC-V180

If you have any questions about the process, machines i'm using or other stuff, just ask me in the comments. I read them all and i try to reply as soon as possible.

Sorry for my bad english, it's not my language. I try my best to improve my technical english.

Subscribe for more of my content. I'm uploading videos about mechanical stuff, as new creations and buildings and also restorations.

Thank you for watching :-)


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