The most common mistake in watchmaking! 

How did you know I'm watching this in my pajamas with a cat in my lap?

I’ve developed a relationship with my watchmakers over more than a decade. This video makes me appreciate them even more. Thanks.

A beautiful presentation. The "random selection" was a great way to point at the depth of the technology and the problems it needs to solve.

This was highly educational and entertaining too. For a fumbling amateur like me, your valuable tips and enthusiasm for the craft are really motivating . Thanks so much!

I've only just discovered your channel and find them informative and easy for a layperson like me to understand, while also being relaxing! Best wishes from Oxford.

Wow! I have never heard anyone explain much about screws, either in courses or textbooks. Thank you Kalle.

Thank you, I am the guy in his spare bedroom with a cat on my lap. I don't have a school close to me so this video helps a lot.

Geez important !! Of course I made some mistakes with screws !! The better is to find the mistakes 😂😂😂 . Thanks Kalle it’s another interesting video, watchmaking is always about details ! So always stay focus about each parts and screw you put on, that surely make you a better watchmaker ! Best regard dear Kalle ! ✨👌

.....still laughing at, "in the back bedroom, in pajamas with a cat in his lap!"

It’s the little things Kalle, but soooooo useful. Thanks for all you do dude👍😁

As a mechanic, I have a whole drawer of nuts and bolts. I never toss them, unless they're truly broken.

As one Dutchman to another dank-ye-well. This is a good reminder to pay attention to detail. I sometimes have more than one watch on my table and keeping everything organized is important because mixing screws is a sure way to watch damnation.

I am the guy in pajamas, but without cat! 😂

I’ve always done my most creative watchmaking in my bedroom, in my pyjamas with a kangaroo in my lap! 😂😊

I have never heard anyone ever explain about watch screws. A great video. Thanks for the video.

This was an awesome post. I’m new to hobby and working on Seiko 7002 movement. Screws are important! No room for multi tasking in watch repair.

That’s funny. I keep the screws with the respective part…did exactly what you showed!!

Thanks. Have lost a screw. Now I know what to look for in a replacement

Nice review and mention of a screws use. They are themselves for a reason!

That was very interesting and an real eye opener. I can now see how essential the different screws are and it will make me revisit some movements that I have worked on as a hobbyist.

Thanks Kalle very educational and worthwhile video for the extreme beginners like me.

Your knowledge is awesome! I really enjoyed watching and listening. ❤

Thanks Kalle, another brilliant video - this has been the missing piece of the assembly jigsaw puzzle for me - I realise I have been flying somewhat blind up until now - As always I'm so grateful for your kindness in sharing with us your wonderful experience and knowledge 🙏

I have enjoyed watching your informative videos.

Thanks Kalle, I always thought there was a logic to the screws and you explained it very well! I just don`t know how you are able to put extra screws on my bench when you live so far away!!

I don't know why you thought we wouldn't find that subject interesting! I thought it was great! Thanks Kalle!

Kalle, I've used my cat(always in my lap) fur to shim a cannon or hour hand on a few occasions. It works great!

I am just getting started in my late 50's. I appreciate this video as it knowledge that is not readily available to me. I am looking at low level restoration of pocket watches and cleaning up and polishing newer beat-up watches. I am an amateur silversmith and want to use that knowledge to make watches look like and hopefully run almost like new.

This information is priceless as usual!

very interesting and entertaining, you did a great job explaining... for a DIY watchmaker as myself... a huge help!

Very helpful, maybe next time show the screws going into the respective locations on the movement. Thank you

Kalle. Thank you. I knew about screws. Honest! Now I know why I knew about screws. Taking your time to help us lesser mortals in the learning of this hobby is an excellent thing to do. Take care. Wish you well

Thank you for the detail. Im hoping to get into hobby level watch making and this is exactly the kind of information that Im looking for!!

Wery informative Kalle. You are soo evil to your students with those extra stews 😂😅😉

Thanks Kalle!

The classic example is the three screws on the barrel bridge in pocket watches, one of which is sometimes shorter than the others because of the setting mechanism on the dial side

Another excellent video, Thank you.

This is excellent for all the reasons that have been mentioned, but also: when you lose a screw, this can help you have a better idea by looking at the movement what kind of screw you need! Also, I just wanted to say that these videos are extremely helpful when watchmakers are too busy to provide education and watchmaking schools are a few and far between where I live.

I can check what I did again. thank you.

Thank you for the guidance and information. Very educational and appreciated.

What a gem this guy is for people like me who are learning watchmaking at home after a fatal medical condition and cant afford to go to watch school. Excellent sir keep these coming

Just letting you know that everything you tell us is Highly Intelligent and nothing is taken for granted. I appreciate every piece of advice and always learn more from your videos no matter how trivial it may seem. You are an excellent teacher and do an excellent job of breaking down the science and theory. Thank you for what you do!

You are the best.. you explain everything’s so good .. many thanks for your pills

Dear Kale ! I will begin to wish you a Merry Christmas, sorry I’m one day after ! Hope you got a great one with family and friends !! I write my Christmas wishes on this video because, I clean watch part and this time each screw will going at the right place for sure, after seeing your video, I recognize each screw and his fonction. So just thank you to show us those so important details !! Best regards!! 🎄

Im the guy in pijama with a cat in the knees working on a watch 😂 You are a perverse mind with those extra screws XD

Excellent information as always. Thank you.

Love it!

This was interesting but what would be useful are tip on how to sort screws after cleaning a movement. How do you sort the screw into their correct positions

Great Vid Calle... The screws with what you called a tapered shoulder, are called "COUNTERSUNK" screws... Just to let you know ... As for my watch case... £$^$&&* piece of wasted time ... I completely &^%£$! it up... I was so £"$^%&* pissed off... Then I thought ^$%£ this watch making hobby... Once I calmed down over a brandy coffee. I thought oh well... Start over again... lol Frank...

As an amateur with only a few years 'experience' under my belt, I always find your videos not only super-informative as an important source of 'real' knowledge - but extremely easy and enjoyable to watch. Never boring, far from it. This one really helped in many ways. Many thanks Kalle.

bedankt Kalle erg goede info .... i had net een uur gezocht naar een verloren schroef en gevonden dus dacht ter onspanning even Kalle kijken en wat is het topic lol hahaha ik weet wel waar ik vanacht over droom schroeven!!

LOL! That's me working on my mods in the spare bedroom with not too infrequently a cat in my lap or trying to knock a project off the bench! Too funny my friend!

Wow,Sir a Master class I appreciate your time and knowledge.

The cat comment hit hard 😊

As usual Kalle - detailed, serious and informative, never screwing around! Thank you.

This vid was EXCELLENT ! Nowhere else have I seen watch screws explained like this !

Thank you ,you just gave me light years of watchmaking

excellent, thanks, very interesting to me; all makes sense, not just diameter, length, but shape of end, shoulder, etc. Somewhat the same in macro-mechanics with its different types of bolts and nuts.

That was good introduction of screws. And also some general idea of watchmaking. Thanks Kalle.

I started out in my bedroom, then qualified professionally 15 years ago. Your words are so true.

WOW, it was a slow day at work today......................

Great video 🎉🎉

great show thank you!

Thanks Kalle! Being fairly mechanically inclined, a former auto mechanic among other jobs, I am familiar with different types of screws and their uses. But being a self taught amateur I had to learn to apply my prior knowledge to watch repair. I have still been guilty of using the wrong screw but usually not the wrong type but the wrong length. Fortunately I did not cause any damage and I have learned to pay more attention to the screws, especially screws of the same type but different lengths.

Thank you for passing on such wisdom! I would hate to screw over a movement for getting it wrong. 😊

Thank You. Very interesting.

I have not disassembled my first movement because I am afraid of mixing up the screws, forgetting where they go, etc. This video is incredibly helpful for me as a complete beginner. Thank you!

Kalle a GREAT VIDEO-I have done it too many times- been there done that got the teeshirt !!!!

This is my favourite channel right now 👍🏻 I agree with you. The most common one that springs to mind, Omega 1120 with a perfectly cut circle on the barrel cap and a domed not polished screw on the barrel bridge. Note all screws came from the 1120 😀

Thank you Kalle! I love when you put 3-4 screews on The bench for the überstudent.😅

This was so helpful!

This was an amazing video! Soo informative! 🍸🍸

Good vid. I learned a lot! Thanks. Keep at it!

Salut collègue, je suis horloger, j’habite à la Chaux de Fonds en suisse et tu as tellement raison sur ce point, une bonne boîte d’assortiment de vis sauve la partie 😂😂

Thank you

Very interesting!

it is always easy as long as someone explains it to me🤓 Thank you Kalle !

A really good video Kalle! Basics are the important things to make any task easier. Merely playing at watch bashing, but I learnt early on the importance of keeping the screws in some type of order. Your explanation was priceless, thank you.

Thank you Kalle for your insights and knowledge. I am always learning and this is a prime example of something I do and not pay close attention to. Well I will now be studying screws a bit more closely. Cheers

Thanks, Kalle. More useful info. I think I must pull that sneaky extra screw trick on myself sometimes. ;-) Cheers.

I love your videos

Ive watched several of your excellent videos and I was always overwhelmed by the screws. Thank you. A video suggestion would be taking apart a movement and showing the screws on disassembly and then re assembly. That would be extremely helpful.

Very educational and provides much better understanding of the screws holding things together, thanks very much!

My whole life I’ve always loved mechanical watches and thought they were above my simple understanding. Then I found this channel. How interesting and a great way of explaining things that makes sense of it all. I’ve just retired and looking for an inside hobby for the winter. My eyes are not what they were though. Great job my friend. 👍

Thanks, Kalle. Using the wrong screw is my biggest worry. That's why I keep them in small tins with the parts that they go to and clean them by hand each separately as a unit. I'm sure that I won't have to do that as much as I gain more experience.

Great tips. Thank you!

Great video

Believe it or not, that was absolutely fascinating and highly entertaining!

Great information

Very helpful, thank you 👍

nice video i always learn

In an HMT manaul wind movement one screw is right above the winding stem. If you put the longer one in from the barrel side you can assemble the keyless works but can not switch to the time setting position. Took some time to figure out whats the problem.

Excellent. In every craft the primary job of the artisan to look at the work of the previous guy and shake their head.

Wow...what a well-timed episode, K meister. You are never wasting my time. This is one of the things everyone needs to know but no one ever talks about. I was just working on a 1964 Hamilton and some watch companies put in the tiny jewel plate screws in from the opposite side. What I mean is the teeny plate that covers, say, the train bridge pivots. They screw in from underneath, so the screw head doesn't show on top of the train bridge, and the tip of the screw has a rounded shiny end for aesthetic reasons. I hope I explained that well enough. I was just thinking of this very thing, "uh oh, I wonder if I swapped some screws?"...and here you are. The K man to the rescue 😎😎👍👍

Thank you for all these videos. They are all invaluable lessons!

I swear Kalle ads some screws to my bench once in a while even here in my home-workshop. 🙃😜

Thanks Kalle. What an informative stream. So basic, but invaluable information. Thanks for sharing. I learn something every time I watch your videos. Cheers.

The thing I notice with some watch maker videos is some are using metal tweezers that look like they could be leaving fine scratches on the various parts. I never notice that on your videos. Maybe I’m too critical of such details. 🤔

I've watched many of your videos recently, and this one was probably the most important. Now, I'm ready to dive in and do this. Thank you, Kalle! p.s. I watched this with 3 cats and a big cup of coffee.

I had a longines pocket watch from the early 1900s, it stopped and I found the screw that secures the movement in the case had come out, it has about 1/3 of the head missing, almost like a semi circle but a bit bigger. When tight, the semi circle secures the movement over the case edge, stopping it from sinking in too deep. Not sure why it has a semi circle shape, it might be so you can half turn it and allow the movement to sink deep and ultimately pop out the front of a case, but not sure, it seems redundant in my watch. I find these movement retaining screws come loose often in old watches, so I used loctite to secure it.