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Like others on here I don't restrict myself to just one set of screw drivers. I have one set ground to a thinner profile, and another set ground to a slightly fatter profile. I also have numerous screw drivers ground to extra thin and extra fat. As a rule I find that Swiss screw slots are thinner than Japanese, Quartz movements tend to have a few have extra fat slots, very old pocket watches seem to have extra thin slots. This sounds like an expensive investment in screw drivers but I have probably spent less on my multiple sets than many others have on just one as I have picked them up second hand and in job lots from all over the place. They are good quality, vintage, French or Swiss. They don't necessarily have the silkiest smooth ball bearing tops to them but they are perfectly functional. If you generally work on the same type of movements (pocket watch, or Japanese, or Russian for instance) then one set of screw drivers tailored to that specific family of watch movements is all you need. As for throwing away old blades it does seem a bit of a shame. Generally speaking all that is needed to bring a chipped blade back into trim is 5 minutes on a stone (or decent quality wet & dry paper on a sheet of glass, or your diamond stones). If you find that you are regularly suffering from chipped blades then it might well be worth exploring the possibility of adjusting the temper of the blades. If you get it right you not only get more resiliant blades which are less likely to scratch movement plates, but you also gain an understanding of heat treatments for steel on a macro or even micro scale. Useful stuff.

I use a domed press in the lower holder an a big die in the upper. then place the case around the lower domed press die. Put the crystal in and put pressure on the crystal until it bends a little. So much i can lift the case up and mount the crystal. Maybe u can do that with your thumbs? By placing the crystal on a big enough die and pressing in the middle of the crystal . Just so much that you could mount the crystal in the case?

The balance wheel has been played about with. The timing screws do not match, one has been filed off, another has been fitted with a timing washer. The pin in the stud is a monster and should be replaced. I'm not surprised the watch isn't keeping good time. You need a new balance complete. Have you poised the balance?

Early 80s Vostok amphibia Sent from my iPhone using Tapatalk

the old hunting requires a special low dome crystal (so you can close the lid). the bezel that holds this ( glass or plastic) is fragile and easy to bend - so be careful and good luck. vinn

Thanks for all the kind wishes...warms my (slightly faulty) heart. All this just reinforces my very high opinion of everyone in this forum. All great people and the friendliest forum on the Net. Roberto... If your family has a heart problem history then getting your own ticker checked out is a good idea. The 24 hour monitor will show up stuff normal ECGs often miss, being that they are only a sample taken over the course of a minute. In my case I was just plain dumb and pig-headed ... a typical Aussie bloke. I have had symptoms for the last three years which I ignored because they would often go away of their own accord. So being a typical Aussie bloke I thought, "She'll be right...no worries...just keep on keeping on." Yeah, sure! I was VERY lucky. I had just dropped my dog off at the Vet for her regular physio treatment (following her ACL surgery) and the attack happened while I was at the reception desk! The vet receptionist and nurses freaked out and the vet came racing out to put me into the recovery position whilst an ambulance was called. Anyway...it all ended okay. The ambulance arrived within five minutes...they stabilised the heart and took me off to hospital. I was more worried about my dog and who would look after her. As it turned out, I needn't have worried...the vet looked after her for the two weeks I was in hospital and didn't charge me a cent for kennelling her being that all the nurses and the vet really love my dog. How good was that...what wonderful people! Roberto...be mindful of any symptoms and always see a doctor...don't follow my silly "ignore" lead. In my case there was NO pain. I just couldn't breathe and then I blacked out. Spooky!

I have never seen that one before. This is the type I used for large plastic type glass fitting along with the dies. https://www.hswalsh.com/product/robur-watch-glass-fitting-tool-hu11

I agree that this is likely caused by the hands not being pressed on firmly enough. And to do that you certainly need to support the pivots when installing the hands. If you are working on the hands, presumably the watch is out of the case. The "underside" is actually the back of the watch - opposite the dial. You need to place the pivot on something like a stake of appropriate size, a movement-specific holder for this very purpose, or a platform such as a Bergeon 5409 which is designed to support the pivot. It is also possible that there is something wrong with the reset hammers and/or hearts. They need to be very smooth and properly adjusted. There is also an eccentric stud that is used to adjust the reset. See images attached as they may help!

Looks like a snap back case to me as well. The back looks slightly "rotated". If it were a one-piece case the engraving would be perfectly aligned I think.