How to bush a worn pivot hole - clock repair basics 

I'm a beginner at this...the very beginning. I need all the training I can get. Your video is an excellent start.

Great job..Your attention to detail.is very helpful 😊

Keep doin' what your doin" Chris; it's good to see young people getting into the repair business.

At 7.18 you say that the cutter 0find the centre, but if the plate is moving, that will be no more the initial center...?In your other video you explain how to find the original center by reaming.Please correct me if I am wrong. Anyway very informative all you are showing us.Thank you😊

That is an excellent visual explanation. Great verbal skills also.

Fantastic...you're an excellent teacher.

Thanks so much,very informative.

Great job. Just done one on a Westminster clock. Painful but it goes away when I see the results. Like new. To have the right tools makes it much easier.

Great info and nice I am a beginner at this and 86 years old and want to fix the clock dad maid many many years ago. I has just stopped working.

Absolutely love the video! But it cut off at the side Shake info

Fantastic work thank you

Chris, this is a really informative video, love your work 😃

Nice Video, only one thing missing, after 5 side broaching you should really smooth broach afterwards.

Good technique, the drill press can give good results like a bushing machine. Important to advise viewers to locate the original pivot hole center, though.

I love clocks and have just started to do some repair work Great Video, boy do I have a ton to learn!

Thanks!

Impressive!

Thanks for the informative video I need to do this on one of my clocks as the hole is worn

Very interesting 👌

Really helpfull video.

As someone whose newer to clock repair, thank you for making this. It shocks me how cheap drill presses are and the possibility of me getting one is pretty high.

Precision

Great Video, but one question, Isn't the new pivot hole now slightly off-center in the direction of the original wear?

Chris thanks for sharing your skills. I know that you do it but show the viewers how you correct the worn pivot holes to put them back on center before you do your final reaming.

Thanks so much for taking the time to produce your videos. Ive just started getting into clocks, so im still learning trrminology. You have great presentation skills. As a beginner id appreciate someone taking an old clock off the shelf and looking at it like a beginner. How do you examine the clock, determine problems, what are the typical jobs a beginner is capable of doing as he learns, is it ok to do a dunk, swish, dry, and reoil if clock is running but just dirty, typical stuff a beginner might encounter. Thanks again!

Thank you it is enlighten to see you taking the time to do this, would like to know where to get all the tools.

Hell Chris, thank you for the videos. It awesome to see my peer groop working on Watches and Clocks. I have a few tips to improve your precision if you are interested.

Vey clear explaned. I have a worn clock, I go look at it. But need tools first. Where to get these cutters and other stuff, I have a pcb cnc mill (0.0005 mm precise) also.

thanks for sharing this. Is there a specific name for the end mill you used? It looks like is has a centering post.

I just found your channel. Thank you for sharing. I have not attempted rebushing yet. I was told that a regular drill press was too fast to use for a reamer. I am glad to see this debunked, as I did not want to buy a bushing tool. Another thing I was told was to be certain to work harden the inside of the bushing with a smooth broach after getting the right diameter. I notice that you do not do this. Do you find it unnecessary? Did I miss a step? Thanks, again!

Is there any reason why the bushing couldn't be cut prior to pressing it in?

On the end cutter, what is the diameter of the guild? Works the same way as a counter bore in tool and die, but your hole is to size in that case.

Hi Chris! Thanks for the video! I have a cuckoo clock with a Bachmaier movement and a top mounted music box. Can you point me towards a tutorial on adjusting the music box? I saw your video on the side mount box, but this one does not seem to be similar. Thanks so much Chris!

Hi Chris If you beginner and you have not reamers and set of Begean bushing .How smaller the hole in the plate should be for new bushing?

What this excellent video tells me, is I need to find someone who will take my plates, insert bushings, and return. How to go about that ? While I agree that a drill press can be had, the collection of all the other tools, bits, reamers, broaches, end mill, and so on, is beyond my reach, particularly for a single movement.

Hi Chris, Your lessons perfectly. Thank you so much. I’m from Turkey. I need to Bregon cutter set. I want to buy it. Could you give me an advice ? Which model ? I repair only wall clock and grandfather clocks. BR.

Wonderful video!!! Quick question did you file the worn pivot holes first before you drilled them out?

Hi Chris, great video, I have two clocks, which are not working after a good clean, want to try bushing , is a bench drill all you need? Bushing presses are v expensive, also any chance you can let me know the basic tools I would need , to replace bush ? Any help would be great , thanks

You said you slow the jar to move a little to find center is that correct and how much pressure do you apply to the plate

With the hole being slightly off centre from excessive wear, won't your bushing now be slightly off centre to its original position? Surely some compensation would be required when drilling out for the bushing?

For some reason, YT keeps deleting my comments. I'll try again. I like how detailed your videos are, especially for us beginners. I am wanting to attempt my first bushing job. What EXACTLY do I need besides going broke buying bushing machines?. I see you use a drill press. There are affordable ones on Amazon...would they suffice?. Do these Bergeon and KWM reamers fit in a regular drill press or do they only fit their special machines?. What brand did you use in your drill press?. Please...I would like to know specifics. No step is too baby. I have a movement I need to put escapement bushings in but I do not have thousands of dollars to lay out for bushing machines and all this fancy equipment. What EXACTLY do I need to start?. Thanks so much for your time and videos.

Okay.... But I gotta ask, how do you keep the drill centered in the bad bushing hole? It would seem to me that the drill wouldn't center and thus make the hole off. I've seen all kind of jigs, clamps, and you're using a mason jar with a drill press. Don't you need to center the hole first?

You mentioned that the hole was worn and needed to be bushed. What you didn’t show them was how you compensate for an oblong hole to make it dead center again after it’s bushed. I put the Plates together when reaming and use a broach that goes thru both holes to make sure the hole is dead true and perpendicular between the plates. My opinion is you oversized the hole for the pivot and will wear out sooner and could cause a depthing problem with each gear that engages with the bushed gear. The thickness of the bushing isn’t determined by the plate thickness,nits determined by the length of the pivot. If upon checking the end shake you see the pivot doesn’t protrude the bushing then you need to use a shorter bushing or sink the bushing to the point of just barely uncovering the tip of the pivot at extreme end shake and end mill the rest of the bushing from the back side of the plate. Having a short pivot in a long bushing will cause endshake problems as the pivot wears. You do a good job otherwise and everybody’s technique is a little different but the end result is to have a properly bushed pivot in every aspect including the depthing of the gears involved. I’ve got 55 years at the bench and am a Certified Master Clocksmith with AWI. Installing a bushing is very important, as I have come across many a botched job in my years. Do you also have videos showing the assembly after the bushing procedure is complete? This is usually the deal breaker with any novice as there are many challenges to making sure every cam, lever, pin is in the proper place in order for the chime and strike to properly function. I think what you are doing is good in fact to the inexperienced person who thinks anybody can fix a clock, as it shows them that leave this to the trained professional if you want the job done correctly. I have received basket repairs where the whole clock is in every state of partial bad work and not assembled because the customer bit off more than they imagined. 😮

oh and I thought you were supposed to smooth broach after? But I am just a beginner!

Hi, i have a Franz Hemle 341-021A wall clock and with the chimer onn the randomly stops at 6.30 but if i turn off the chimer its fine any idea what it could be please ?

How much generally does it cost to repivot holes on average...like a range from x to x. I see lots of clocks which are pretty cheap that dont run but I guess due to repairs they are only worth something when they are running.

Is it possible to use a Standard drill bit set for a re-bushing on a cuckoo clock, instead of a metric set?

Great video learned allot about hobbyist not needing expensive bushing tool machinery. But now I need to know exactly what to purchase to repair a single bushing pair. I can accumulate addition tool sizes as bushing repairs are needed on my collection of Mantel Clocks. So minimum would be? I have digital caliper and small harbor freight drill press and I guess your cutters are Bergeon? would need the tool that holds the cutters, whatever that is called or would the cutters just be used with the standard drill chuck on drill press, I need 2 specific bushing CUTTERS based on pivot measurement, I could use larger drill bit instead of CHAMFER, need WIRE DRILL SET 0-60 maybe Huot , maybe 4" PVC coupler to hold plate on drill press, a specific size five sided BROACH, an aluminum or steel rod for PUSHER. and the 2 BUSHINGS themselves, can they be purchased individually or do you purchase a whole set or a small set of the most common used for Mantel Clocks? I guess the bushings all have an undersized hole that has to be drilled and broached to the size required? Is that about it and where would I purchase the tools, Timesavers, Ebay?? Sure appreciate your videos and advice.

Bushing machine with KWM bushings...much faster and more accurate.

Probably just me but I thought the bush is always inserted into the inside of the plate so if it loosened it would remain on the arbour, which is what you did. However you ended up the excess to be cut off on the inside? Which was pushed in flat? Surely the excess should have been on the outside and cutting off would remove the oil sink? Did my eyes deceive me?

I'm sorry but you neglected to find the center of the hole remembering that the hole is oblong. Then drilling the hole. Your new bushings are not centered. The pivot pushes up from the weight or spring leaving an oblong hole. You need to center from the bottom of the hole. I'm sorry but you have misled many of these new people. Patrick

A glass jar!!!!!!!!!! Are u serious... WOW. NOT CLEVER...