You have to make or have made the tubes that go on the discs.

 

Thanks, I already know that.

Try to read till the end of my post, there are two questions
How can I achieve this in home conditions? Do you have any hint from your experience?

 

You could trim existing hands to leave only the tube and glue that in your discs.

 

Yes, I'm thinking the same way. But here are several difficulties - how to make a hole (I have some hole puncher for leather, 1mm is the smallest), how to trim that hole (now I'm using small rounded file), and finally, how to glue it. I know, the answer is - with precision.

I was wondering, if there is someone who actually has the know-how already.

 

Pretty difficult to find someone "who actually has the know-how already." Have you reached out to Mr. Jones Watch to ask how they do it? Or you could buy one of their watches, take it apart, and then reverse engineer it. You might not get anywhere doing that, but you never know.

 

Well, as I wrote in original post, MrJW support allready told me how they do it, they have special rivets for that. But I will do it with some cheaper hands that will fit to the movement, and trim them.

 

Depends on the diameter of the shafts. Down to 0.32mm you could mill t-flanges from solid brass or aluminium. Down to 0.15mm you can drill the holes. Both holes should be smaller than nominal and reamed to fit.
I think the usual commercial bushings are not useable as the hight of the second hand to be rivetted would just be 0.1 to 0.15mm . And your disk should be minimum 0.2mm thick+ a 0.2mm washer, clamping (sandwich) the film to reduce the local level of stress of the transparent plasic which is not to be rivetted correctly in normal way.
Its not that big deal having the right tools mostly work .. but without..
You also can create a two parts rivet with triangle or star shaped key for a better fitting, similar to rivetting a gear to a pinion. But as plasic is creeping always use a washer from metal.

Alternatively.. think about a short big headed brass screw with a fine thread and a fitting hole all through the shaft.. so you could just screw or unscrew the nut to hold your disk..
Everything depends on the dimensions of your watch/ movement/ hands tubes.

 

The problem with tubes is that the minute and hour hands typically don't have tubes; the cylindrical section is really short and formed when punching the hole. Only the second hands are typically riveted to tubes.

Perhaps you could warm up a sewing needle and punch a hole in the plastic; this would make both a hole of your choosing and upset the material around the hole to form a tube. I'm sure you could find a sewing needle that meets your size needs. Probably the biggest challenge is to make a hole that is centered and square.

 

At this point you also could use an m0.5 for a setting screw which you could reach with the screwdriver between minute hand level and dial..

 

Another suggestion for the hands is thin Lexan. Sign supply company might have 1 sq. ft. pieces. What makes it good is the edges will polish up.

Thinnest is 1/32"

I tried a tic tac piece of plastic and edge didn't sand well

Used it on a LeCoultre Galaxy model with a broken hour disk. Supplier wanted $35 for the disk. Got the Lexan from a friend of mine in the sign business

DON

 

Check out a blister / vacuum forming factory as they may sell you an A-PET or E-PET for a few bucks. You also may be able to stabilize thin film by drawing a rim to it, which decreases flex.. btw you need special color for painting lexan, not sure how they work with transfer print.. (for a handpainting job check out Tamyia colors for the lexan body skins for their RC cars but think of.. those are painted from inside so the lexan works as a solid gelcoat not to scratch off the colors (an idea worth copying - by inverse painting the Backside of your disk)

 

Hi @kozmo9000

How did it go? I came to this discussion cause I had the exact same questions. Did you ever figure it out?

 

Buy a sacrificial movement, tear it down and get the hand barrel gears out of it, have your pre-cut discs ready to be set (find the exact center). Next, set the barrels on a press so you can keep them perpendicular to the disc. Now, heat the barrels. Stick them through the discs to melt/press a hole. Make as many as you can - you'll probably want extras. After that, you get one chance to set them on the new movement. After that, they don't fit very snugly.

 

Hint...look at the date before responding.

 

I did. No one answered the question. You're welcome.

 

I think he probably got stuck.. easiest way.. print a water slide picture,.. turn a hands tube fitting and cast both with clear epoxy resine in a mold.. there are quite some promissing methods to do such work, but there are maker and talker... and some get simply lost on the way between both states of the process

 

Hey so I did the same thing and set the existing hand tube on a plastic disk and it worked really well.

I'm just fine tuning a way to increase the precision but the proof of concept is there. Would love to hear or see anyone elses exoeri nice with this type of project.

 

Hm a bit difficult to read, but works 😉

 

Hahah ya it's based on a comic that bends time so intentionally leaving the actual function of the watch out was on purpose.

 

I can't believe I answered this clown. Guess I've grown a bit.