Thank you for creating and sharing this informative video, your concise explanations and excellent camera work.

Very good. I'm restoring an old music box and you helped me a lot with your video, thank you.

Nicely done! Good explanation of how its done and good camera angles showing the inside of the barrel etc. Thank you for sharing this.

Great video. I am a first time clock tinkerer restoring a C1900 cuckoo clock. Your video will help me tackle the mainsprings. Much appreciated

many thanks for your video I gained some confidence from your instruction, its a marvelous spring winder

The thing I would of done different is give the spring a good coat of clock spring grease. Best not to handle with bare fingers as it can hasten corrosion. Use gloves on all cleaned clock parts to prevent the moisture from your fingers getting onto the metal. Sometimes you see corrosion on the minute hands were people touch the hand to adjust the time. Good old butler's and house keepers who were responsible for winding and setting clocks wore cloth gloves.

Thank you for taking the time posting this valuable information! 👍

Thank you I really needed to see how to open a new spring. It may seem basic but most videos only show how to put old ones back on.

Thankyou for such a good demo of spring replacement.

Really nice video, it's very interesting seeing how other clock repairers do things.

Thank you, just what i needed, had a spring fail catastrophically 2 days ago. Havent dared to survey the damage yet.

This is great - thanks for sharing. One more bit of information that I've been missing has been missing is now complete 😁

Great video thanks. I have been watching the Open Clock Club weekly videos and their comments and observations are very useful. What they say about springs particularly the big powerful ones in English Chiming Clock is to wear leather gloves as you mentioned and eye protection. If the old spring breaks which has happened to me it can blind you if you are really unlucky. And too they emphase cleaning off the factory anti-rust white spirit dry off clean and lubricate with chosen lubricant. I use dead modern MultiLube (spelling?) which contains Polly somethings non-stick, I did a video: Striking Clock 92 pt 3 inspecting, cleaning, new mainspring: which is not as clear as yours but a cross reference for info. But great to see your main spring winder. Genius design and great to use - very quick change over and saves a packet of cash. Congratulations.

Great video fastenateing thank you!!!

Hello Johnny, Excellent video... lots of useful information there for the budding clockmaker. I think I worked it out but it would be great to have a tiny walkthrough your workshop made mainspring winder and its component parts. Thanks for this video... Take care. Paul,,

I inherited a Kundo electric 400 day clock from my late mother. She bought it in de early seventies. The clock has been idle for over 50 years. I took it apart and cleaned all the wheels, the pivots and both plates in the ultrasonic cleaner and put it back together. I did not oil the clock because I am not sure if that is necessary and I do not have the right oil for it anyway. Anyhow, now the clock runs for about two days, then it suddenly stops running for no obvious reason. This clock has a small electric motor that winds a tiny mainspring at regular intervals. The mainspring barrel is made of some type of plastic, like nylon. I suspect the main spring may have lost its power over the decades. I have been searching for a new main spring assembly, but I can't find one.

muchas gracias por el video. fantastico el invento para los muelles

Hi Johnny, Many thanks for the interesting and useful video. I need a mainspring with the dimensions of 17x0.3x38 mm, but the Cousins supplies 17 x 0.30 x 1250 x 30mm and 17 x 0.35 x 1400 x 35mm, which one would you think be better to choose? Thanks, Touraj

Is the striking spring a different gauge on French clocks like this one?

This video has really helped me. I'm restoring a French movement at the moment with a spring similar to the one you are using. I have two questions. I didn't see you oil the spring. Was that something you did off camera? The other thing is, I didn't see how you measured the length of the spring. Did you simply stretch it out over a table and put a ruler over it, or did you use Daniel's formula?

Thanks for a great video. You are helping me learn about mainsprings which I appreciate. I like your mainspring winder. Did you come up with it yourself or find instructions online?

thank you, I guess i'll have to build something like your machine... greetings from argentina.

Thank you for that excellent video. How would I do the on a Sessions mantel clock, please?

I have a clock with a broken mainspring on the strike side. Should i also replace the spring on the time side or if it looks fine put it back in and keep using it?

Awesome stuff!!! Question...I have an old Japanese movement that doesn't have barrels around the springs (one of which has "sproinged")!!?? Do you have any advice on how to deal with them?? Or...maybe I should just "blow it up" and get a better movement???🤣

Do you lubricator the spring or does it come pre-lubricated?

Good day Im designing a new clock Would you share a word how to measure gears Id very much appreciate it Thanks for the video

The spring seems a bit too long......is this an 8 day clock where the barrel makes one revolution per day? What is the diameter of the arbor?

Interesting video! I have a clock part that looks like that, but it doesn't have a cog - I was wondering if you might me able to have a guess as to what it might be called? I have no idea about clocks, I couldn't find anything on ebay etc which lead me to watching KZfaq videos to see if I could ID the part myself, but had no luck here either.

Nice job But you definitely need to secure that spring winder to the table.

Nice job of changing the mainspring. I didn't notice if you cleaned the new mainspring, but do you normally clean the new mainspring and oil it before you install it in the barrel? Thanks

I did not see how you measured the length of the old spring?