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About marcoskaiser

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    Watch Enthusiast

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    Tool making, Musical instrument making, model making, vintage watches

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  1. Interesting topic! I just finished mounting the same setup, but was worried by the big jump in speed that a few millimetres of pedal action give, and the variation. So I installed instead a variable knob to be operated by the left hand. other issue is the ratio between wheels. The 7000 rpm speed seems overkill. What is the maximum speed experienced turners use? (I obviously must learn how to weld a belt as well)
  2. Thank you Nickelsilver, Rodabod and Jdm, It was a success! First getting rid of the part already started and full of bumps with a hacksaw took only a few minutes. Not difficult, and the saw came back still good, not blunt... I will adopt this approach whenever possible. picture 1 Then overcoming the lack of rigidity by working close to the chuck, with minimum overhang worked fine. Good chips, and a nice sound of metal actually being cut.. finally. Funny thing, and in accordance to what nickelsilver said, the recommendation to cut stainless at 115-135 feet per minute of surface spe
  3. I will bolt the lathe to a granite bed and then test this. Got enough of low standard jobs already.. thank you for the tip!!
  4. That's 100% approved A-OK especially when needing to part something that's challenging the rigidity of a machine. If on a larger lathe best to put a block of wood under the cut or the saw can surprise you when it gets through and nick the bed (I do the saw trick with the lathe running). Just remember to reverse the spindle direction id using a jeweler's saw where the cut direction is opposite. I actually cut and welded my toolholder so I can cut using reverse rotation. That’s why I could not post anything in answer of your kind tips! I may seem like those people who take more pl
  5. That’s very tempting, hahaha. I feel ashamed of letting people hear the squealing from the shop..
  6. Thank you Nickelsilver. I am using a BV-20 , 1/2CV, six-speed lathe. Tools used: HSS 12% and 50% cobalt. I will try to get rid of the ridges and cut again, with the slower speeds.
  7. Dear All, Any experienced maker could enlighten me on the secrets of parting 316 Stainless Steel? I usually hate parting big pieces on the lathe, but so far Brass and Steel could be handled. But this 44mm diameter 316 SS piece is challenging me. Tool has been shaped to 8 degrees of back rake and end relief, has side clearance and is aligned to the centre. Best speed calculated at 115-135 feet/minute equalling 330 RPM. But the parting tool looses every time. All I manage to make are extremely dangerous micro stainless steel needles, and dented tools. The chattering is
  8. Just general knowledge in my case. Also the book looks beautifully typesetted. thanks for sharing!
  9. It is indeed interesting! Do you happen to have the full version in pdf? The link you provided obscures a few sessions for non-subscribers..:(
  10. Took your example and made me a balance tack as well. With an extra hole for a k&d tool that was hanging around without a base.
  11. Label in english for “french” movement?
  12. Thanks, nickelsilver! You mean, the first hairspring, the one still mounted is beyond repair? I haven’t touched it. If it is what you meant, it’s disappointing. Thanks for the clarification on the vintage tools!
  13. Dear all, I recently had the pleasure of finding a damaged hairspring needing care. My first! It’s an inexpensive orient watch, gaining 20 minutes a day. I am taking Mark’s fault finding course, and have other inexpensive hairsprings to practise with. I also got some vintage tools I’d love to use. Until now for me levellers were only the Oliver Cromwell people, but ebay never ceases to surprise... I could pass the first stages of correcting the coil, with two tweezers. But could not find a use for the vintage tools. Could you help me to figure it out? Picture 1 is the bent hair
  14. Thank you Tmuir and watchweasol! roller removers by the dozen, then. Here are the pictures for n. 7. I guess whatever it was, it’s not worth fixing now. Number 3 is intriguing..
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