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Showing content with the highest reputation since 01/19/2018 in all areas

  1. 8 points

    My latest acquisition

    50 bucks plus shipping.. it's in mint condition. Also came with 12 extra reamers Sent from my SM-G955U1 using Tapatalk
  2. 7 points
    I had a need to safely remove a C clip holding in two pusher buttons and thought I would share my method on the forum. I had a spring bar removal tool with a solid pin on one end and a scalloped forked end on the other. I placed a small bit of rodico on the bottom side of the clip and turned the C <- gap facing up. As you can see in the picture, I simply used the forked end that was the perfect gap to push off the c clips. I installed by getting the clip in place, C gap facing down, and used a #200 flat screwdriver blade and carefully pressed down to lock in place. I used the case wall to keep the c clip and push button slit in line. Don't attempt to push the c clip back on with the button pressed all the way in, use the wall of the case to help keep the clip straight in line. Hope this helps someone.
  3. 7 points

    hairspring vibrating tool

    Hello guys, An attempt to make a low cost hairspring vibrating tool : Prove of concept : The hairspring (here it's a 18s balance) is clamp in a crocodile clip which has been grinded to be as fine as possible, a laser beam is set so that the beam is cut by the balance arm. The photo diode (from an old pc mouse ) is en-capsuled in a little housing to avoid parasite light (from what i thing to be an old TO3 transistor spacer found in my spare screws box). The IC is just a simple op amp acting as a comparator, the led on the output is used to visualize the that the laser beam is on the detector. First measure on scope : Doing some simple math show that an error of 0.1 ms on the measured value (which is 400 ms for 18000 bph) correspond to an error of 21.5 seconds / day. At that time base setting my scope has a resolution of 4 ms ! I switched to an Arduino based measuring system : I used an existing Arduino module based on a cheap stm32 and add a led (indispensable to adjust the beam) and the power output for the laser. The comparator is no more required as the stm32 has schmitt trigger inputs. The soft is triggered by the touch screen and accumulate a couple of measures in a circular buffer to compute an average value. This permits to eliminate aberrant measures that you can have when the balance starts to swing. Detail of the crocodile clip : In conclusion this is little tool (cost me only the plexyglass sheet, around $1.5) could be useful to match a new hairspring on an existing balance. The measures are relatively simple to do with a good consistency and surprisingly the croco clip do the job and you can get the balance swing for tens of second on the plexy. You need a resolution of 0.05 ms to be at 10 s/d and probably calibrate your measuring device. The main difficulty was to adjust the position of the laser beam. Hope this can give you some ideas. Regards
  4. 7 points

    Home made watch cleaner L&R clone

    Here's a few pictures of my home made watch cleaning machine. It uses a bathroom vent fan motor, ceiling fan speed control, and a digital timer. I've since added a 12v cooling fan above the motor as running an induction motor at lower speeds (voltage) increases the heat produced by the coil. I turned a 10mm shaft extension to mount the L&R cleaning basket, and the "lid" has a groove that has high temp RTV silicone in it to create the seal. The square post indexes the basket and lid to each jar, and I'm using old school (read: DANGEROUS!) solutions, but they are quite effective. I raise the head after each cycle and spin off the extra solution before going to the next one.
  5. 6 points

    Polite question and answers only

    Moderators perform an essential role in any community, but all have checks and balances. I am the main admin and even I have to control myself in order to attempt to maintain a friendly forum. I am sorry you were prompted to create this thread - I think I know the reason. I am extremely busy at the moment creating new content for the course BUT I want it known that I still monitor very closely the security of the software. I cannot, however, have time to monitor each and every thread - that's why we have the "REPORT POST" feature (which people can use in order to notify moderators and myself of potential problems). It is discouraging and makes the community look bad when we see lack of patience and bickering so please do use this feature and hopefully we can keep this community growing. This is not the largest watch forum on the net - but I did start it with a vision for being among the friendliest
  6. 6 points

    Specs Way Off After Reassembly

    Ok. This has gone far enough. We are all here to help each other. I fear this thread is not going in the direction the OP intended and as the issue is pretty much resolved I will close the thread. To the OP: if the issue is not resolved and you wish me to reopen the thread then Please PM me and I will do so. Anybody who does not wish to be involved in any threads can easily unsubscribe from notifications at the top of the page. I think we all need a beer and chill Sent from my SM-G950F using Tapatalk
  7. 6 points

    Wedding gift - back from repairs, yay!

    My wife bought me this Official Cosmonauts for me for our wedding 15 years ago. It was my Grail watch before I knew the term. The stem broke awhile ago. Eventually I decided to take it to Right Time in Denver. Fortis finally shipped the parts after a couple months and got it back yesterday. Oh how I've missed it! I am really digging it on this new black nato with matching satin stainless steel hardware (originally got this strap for my Lunar Pilot).
  8. 6 points

    Seiko vid (Excellent)

    I thought I would post this vid. It is a vid promoting Seiko but it is also excellent in showing how a mechanical watch works. Well worth watching.
  9. 5 points

    My pocket watches

    Here they are Sent from my iPhone using Tapatalk Pro
  10. 5 points

    Watch of Today

    Made in Croydon circa 1938, a lovely example of a pin pallet movement. Sadly I sacrificed two hairsprings to achieve the geometry I was looking for. Very pleased with the accuracy given its age. I’d love to put it on a timegrapher to check the beat error. Sent from my iPhone using Tapatalk
  11. 5 points
    Well when I said old tool, here's a internet copy of a 1899 watchmakers suppliers catalogue similar tools appear on page 102 of the catalogue they may have at the time forgot to add your name to there mailing list . https://archive.org/details/20thcenturycatal00purd It does make interesting reading as a catalogue thats over 100 years old there are some very familiar old tools listed.
  12. 5 points

    New Watch Repairman (Lady)

    I have finally found time to post the pictures of the lot that I bought. There are more that I have bought one by one, however, these came all in one package (with batteries!). I have fixed most with just a battery change. Any other Mickey Mouse Watch fans out there? I have turned into a MM watch collector and I LOVE IT!
  13. 5 points

    Pin Pallet Beat

    The pivots on these pocket watches need to have a sharp point. I used to re-point them in my lathe using an arkansas stone with a drop of oil. You need to make sure the cups are good as they wear on the inside and can be very rough. You should be able to get an estimate where to pin by refitting the balance and threading the hairspring so the impulse pin is in the centre of the pallet fork.
  14. 5 points
    OK. This is the sort of thing that I might get into. I'm happy to help if I can when you get stuck. With regards to the movement, here's the easy answer: Log in and join RolexForums.com and check the for sale section. Recently a member there had (several) NOS 3135 movements for (if memory serves) $2000.00 each. That's a good price and it will have that off your plate. Yes, it's two grand, but you can easily amass that in replacement parts, assuming you don't cause collateral damage during tear-down or re-assembly... And, the upside is that the swamped movement can be retained for you to learn and work on at your leisure. I noticed a question regarding refinishing the dial. I would avoid this. These Yacht-Masters have a platinum plated textured dial. I encourage you to make friends with your local dealer's watchmaker (if they even have one on staff) and arrange a service dial from Rolex. This is ONLY done on an exchange basis, and must go through an authorized retailer. You may be able to get one through the selling members on RolexForums too- I do see loose dials there often so it is possible. I don't know if the exchange will be less than a purchase through the forum, but you should avoid refinishing because it's not a simple job (and therefore will be expensive). DO NOT buy this dial on eBay unless it is sealed in a Rolex blister pack. Fakes abound... You will need a new set of hands too. And the bezel assembly (I think the insert is Platinum as well so sit down before requesting the quote) Case restoration- you need gaskets at the very least, crystal obviously (these are easy to get) and a crown tube tool. CasKer has the tools (decent quality) for not a ton of money. The tube needs to come out, have all threads inspected/cleaned, new O-rings installed and the tube re-installed with low strength locktite (purple). Maybe you should consider new tube and crown (I would). That's a 703 crown and tube. Those can be found on eBay for a few hundred bucks pretty easily. Again, make sure they are sealed in their blister unless you are VERY sure of the seller and the part you are buying. Maybe the case needs a buff. There is no easier way to destroy a Rolex case than to take it to the buffing wheel. THIS is an absolute art, and should be left alone. Get a Sunshine cloth for the polished sides and be happy with that. Seriously. If it's really ugly, send it to a pro. Maybe ABC watchworks out west- someone who specializes in vintage stuff. They will preserve the case shape where even the local Rolex repair center may not. I do my own, but I know my limitations and those were learned the hard way... But the case needs to be absolutely clean. Tear it completely down (you will probably need the bezel removal tool in addition to the case back tool shown above) and reduce it to all it's parts. Remove all traces of old o-ring that may be present. I like Acetone for this- it may need to soak a while. All oil, dirt, old o-ring etc. must be gone. Then, assuming it is polished to your satisfaction, the reassembly process can begin. Also mentioned above (I do this exact same thing) take a picture of EVERY disassembly step as you go. That goes for the case as well as the movement. Something you were not focused on during disassembly may become critical for reassembly. This is really easy now with phones.
  15. 5 points

    How am I supposed to get this out

    A safer route would be a small pin vice, less chance of damaging the screw...
  16. 5 points

    How to separate third wheel from bridge?

    What you have is an indirect centre seconds configuration where the third wheel has an extended staff that comes up through the bridge to the back of the movement. An intermediate centre seconds drive wheel is friction fit onto the extended staff which couples with the centre seconds pinion. you will probably find there is a friction spring sitting on top of the centre seconds pinion to control the inevitable stutter that these design suffer from. This was the how all centre seconds configurations were executed when centre seconds first became a thing. It's a perfectly good way to achieve centre seconds without bu$$ering about too much with the rest of the movement but it has a couple of drawbacks. The stuttering is one of them, the other is it makes the movement quite thick. Anyway, the circular plate that you refer to is not a separate part, it is a thickening of the hub of the intermediate wheel in order to provide enough meat for a competent friction fit on the staff. There is a Presto tool specifically designed for removing these, and I have also seen some very nice pullers that people have made, but a pair of very thin levers or blades usually does the trick if you are careful. And you do have to be careful. The extended staff does not take kindly to anything other than a perfectly vertical lift; cant the wheel off of erpendicular to the staff and the staff will snap. Reinstall using a staking tool to keep everything nice and true.
  17. 5 points

    Omega Constellation 504

    It doesn't get enough wrist time, but I wore my little (34mm) omega in to work today. Sent from my SM-J727T using Tapatalk
  18. 5 points
    machining, model engineering, some electronics, writing articles on the craft, some photography (most for articles). Been at if for close to 30 years, I sure didn't know I end up this deeply into it (nor did the wife!) Things I've made: https://imgur.com/a/d2Y3a My garage shop: https://imgur.com/a/g8aKm My basement shop: https://imgur.com/a/BHIf1 added the M1, an Aciera F1 and another Schaublin 70 since taking those. Am now truly out of space.
  19. 5 points

    My pocket watches

    I envy you! I also buy them broken but make them more broken.
  20. 5 points


    Generally the stronger the magnification the shorter the focal length. Therefore you will need various lopes. I have found this article on the web which explains better than I could. PS I also use a microscope for the really close stuff such as hairsprings. BASIC TECHNICAL STUFF: MAGNIFICATION AND WORKING DISTANCE The following applies to simple lenses, including all jewellers loupes. The following does not apply to 'surgeons' magnifiers which are made of two small telescopes. THE 14 INCH RULE Some magnifiers are marked with the magnification, some are marked with the focal length (working distance) in inches. The focal length (working distance) is the ideal distance between the lens and the object, not too close (or the lens won't magnify) and not too far (or the image appears wavy). And if you hold the lens MUCH too far from the object, the image will appear upside down. Most people don't understand 'focal length' and so when they see a '3' (for some reason eyeglasses are often marked like this) they think it means "3X magnification" when it really means "three inch focal length". Matters are made worse by the fact that many manufacturers are 'approximate' in their calculations, you can measure the working distance of a 1" magnifier and find it is nearer to 2". So what is the relationship between focal length (working distance) and magnification? Here is the way I used to calculate it. If you take a 'normal' working distance for reading to be 14", then a 7" magnifier brings you twice as close = 2X magnification. This '14 inch rule" is what I used in my catalogue to calculate magnification up until 2011, and the arithmetic works out like this: 1.5 inch = 9.3X magnification 2 inch = 7X magnification 2½ inch = 5.5X magnification 3 inch = 4.5X magnification 3½ inch = 4X magnification 4 inch = 3.5X magnification 5 inch = 2.8X magnification 6 inch = 2.3X magnification 7 inch = 2X magnification 8 inch = 1.8X magnification 9 inch = 1.5X magnification This '14 inch rule" is the way I used to calculate it; it is also the way our manufacturer of watchmakers eyeglasses calculates it, the numbers convert nicely from inches into more-or-less whole numbers for 'magnification', as you see from the chart above. THE 10 INCH RULE Then I discovered that according to the almighty Wikipedia the 'normal' working distance for a lens is 10 inches. This is rather neat because (as you will see if you read the extra-technical stuff below) 10 inches is about 25cm, and 25cm X4 = 1 meter (near enough), and physicists use 1 meter as the definition of 'standard' focal length (not very practicable as a 'working distance')...but don't worry about that, all you need to know is - the way I calculate magnification now falls in line with the 'official' method you find online, like this: 1 inch = 10X magnification 2 inch = 5X magnification 2½ inch = 4X magnification 3 inch = 3.4X magnification 3½ inch = 2.8X magnification 4 inch = 2.5X magnification 5 inch = 2X magnification 6 inch = 1.7X magnification 7 inch = 1.5X magnification 8 inch = 1.3X magnification 9 inch = 1.1X magnification These numbers aren't as good as the old "14 inch rule". For instance, both a 3½ inch and a 4 inch lens have a magnification of about 3X. And both a 5 inch and a 6 inch lens both have a magnification of about 2X. And I get customers who think I'm being evasive when I describe two eyeglasses as being, "about the same magnification". If you would like to try out different focal lengths and magnifications to see how they convert (using this "10 inch rule"), go to my conversion program, click here (it's an Excel file, so you might have to select OPEN). WHAT DO OPTICIANS AND SCIENTISTS SAY? This entire system of magnification being "how many times bigger than normal" (or "X magnification") mystifies opticians. What is 'normal'? It varies from person to person. For an optician, a lens has a focal length - a number that can be calculated, not a 'magnification' relative to normal'. If you really want a definition of 'normal' you should use the standard distance (focal length) used by physicists: 1 meter. But by this definition you need awfully long arms to hold a 'normal' lens in one hand and a book one meter away in the other hand. Also, the human eye often requires more than 'just a bit of help with magnification'. That is why you go to an optician - because he has spent years studying optics rather than reading an entry in Wikipedia. I am not an optician and my knowledge of the maths of optics is shamefully poor. I will, however, attempt to guide you through the mysteries of magnification in the following few paragraphs. They are a bit technical, so you may prefer to skip them and go straight to 'CONCLUSION'.. ADVANCED TECHNICAL STUFF The following calculations apply to simple lenses, including all jewellers loupes. The following does not apply to 'surgeons' magnifiers, which are made of two small telescopes, or to microscopes. FOCAL LENGTH, DIOPTRES AND MAGNIFICATION "Working distance" is the same as focal length. The focal length is the distance you hold the lens from the object that gives the most magnification and the clearest image; it is also the point at which a distant bright object (e.g. the sun) makes the smallest image (e.g. to make a fire using the sun); it is also the distance at which you can project a bright scene onto a surface (stand in a dimly-lit hallway and project the image of a bright window onto the wall). Try it with any magnifier, the distance from the lens to the object will be the same with each of the above experiments, this is the focal length of the lens. In practical terms we can also describe this as, "the [ideal] working distance." 'Dioptre' is the reciprocal of the focal length. The dioptre is the measurement used by opticians and lens-makers, it is more reliable than defining magnification as "how much larger than normal an item appears". This is because "normal" varies from person to person (there is no rule that says you have to hold a book ten inches from your eyes!). 'Dioptre' is the reciprocal of the focal length. To write this as a formula, call the magnification M (if you prefer you may say P for power rather than M for magnification...but let's keep things simple) and the focal length f (in meters not inches) which gives: M = 1 / f. But this 'magnification' is based on the physicist's 'standard' focal length of 1 meter. If you assume 'normal' working distance for a human holding a magnifier to be a quarter of a meter (about ten inches*) then you must divide by four. The formula for converting dioptre to magnification is therefore M = D / 4. * this is not because there is anything special about 10 inches, merely that it works nicely as a number, because 10 inches is almost 250mm = 0.25m, which is why we divide by four. This is one of two accepted formulae for calculating magnification. The above formula works beautifully for small powerful magnifiers such as jewellers loupes and small readers. For instance, for a magnifier with a focal length of 30mm: 1 / 0.03m / 4 = X8.33 magnification. But this formula is based on two assumptions: a) that the object is held at the 'ideal' distance from the lens (its focal length) to give maximum magnification that the lens is held very close to your eye so that your eyes are focusing into the distance (at infinity). This doesn't work for large lenses with long focal lenses. For instance, if we apply the formula to a large reading magnifier with a focal length of 500mm we get 1 / 0.5m / 4 = X0.5 magnification. Oh dear, that can't be right, it looks as if it reduces rather than magnifies. In a sense, this is true, if you place an object 500mm from the lens and hold the lens against your eye, it won't magnify at all. What you must do is move the object closer than 500mm from the magnifier (the magnification will be less) then move your eye away from the magnifier. Your eyes are no longer looking into the distance (infinity) but are focusing closer. To allow for this there is another accepted formula for calculating magnification: D / 4 + 1. Applying this to our magnifier with a 500mm focal length, we now get 1 / 0.5m / 4 + 1 = magnification X1.5, which is more plausible. All of these figures for 'magnification' are approximate, and there are many reasons for this. Firstly, it depends which formula you use (see above). Secondly, if the result looks clumsy (e.g. a magnification of X8.333) the supplier will round it up or down. Thirdly, how much closer than your 'normal' reading distance an object appears depends on what is 'normal' for you. Fourthly, if you use the "ten inch rule" (see explanation above, and also my magnification calculator) instead of the formula, you get slightly different figures because ten inches isn't exactly 250mm. Fifthly, even when you go to the trouble to measure the focal length and calculate the magnification, you will often find that what is printed on a magnifier is simply wrong. If you think this is all a little confusing, it is. In fact, it's very confusing. For instance, if you place the object too close to the lens (less than its focal distance) the magnification will be less, and if you hold your eye away from the lens, the magnification will appear to be more. One nationally-known company specialising in magnifiers consistently used the first formula, above (D / 4). As a result, most of their magnifications were listed as being less than one, indicating that they made everything appear smaller rather than larger. Then they re-printed their brochure, listing magnifications consistent with the second formula, D / 4 +1. The famous optical company Zeiss produce a standard 10X jewellers loupe with two lenses, they fold out and can be used individually or on top of each other (the two magnifications simply add together). At one time they quoted the magnification of the two lenses as 6.66X + 3.33X = near enough 10X when used together; then it became 6X + 4X = 10X; now they label it 3X + 6X = 9X. I don't believe they have been changing the lenses each time, the slight variations are due to the way they calculate 'magnification' then round the figures up or down. IF YOU WEAR SPECTACLES If you wear spectacles, should you keep them on whilst using a magnifier? When using a large magnifier (e.g. for reading) the answer is: yes. I assume, here, that you need a magnifier because the print / map / mark is exceptionally small and you need that extra help in addition to your spectacles. When using a small magnifier (e.g. a jeweller's loupe or watchmaker's eyeglass): do whichever is the most comfortable, but you must keep the magnifier as close to your eye as possible. The only time you may wish to think about whether to keep your spectacles on or take them off is if you are wearing a magnifier over your head (a binocular headband magnifier), they can be used with or without spectacles, as follows: If you are short-sighted (you have difficulty in seeing far objects, your spectacle lens prescription has a power beginning 'minus' ) you will notice that when using the magnifier without your spectacles the working distance is less than marked on the magnifier. If you are very short-sighted you will also notice that if you don't use a magnifier you can focus on very close objects - you have magnifying eyes for close objects (the only drawback being that you can't focus on far objects). The consequence is that with a binocular magnifier you may choose between two magnifications: one (weaker / further away) when you wear the magnifier over your distance spectacles and one (closer / stronger) when you wear the magnifier without spectacles, whichever you find the most comfortable. If you are long-sighted (you have difficulty in seeing near objects, your spectacle lens prescription has a power beginning "plus") you will notice that when using the magnifier without your spectacles, the working distance is more than stated on the magnifier. If you are very long-sighted you will also notice that a low-power magnifier doesn't actually magnify at all, it merely brings close objects into focus at a 'normal' viewing (e.g. reading) distance, which is exactly what your reading spectacles do: they are low-power magnifiers. The consequence is that with a binocular magnifier you may choose between two magnifications: one (stronger / closer) when you wear the magnifier over your spectacles and one (weaker / further away) when you wear the magnifier without spectacles, whichever you find the most comfortable.
  21. 4 points
    Well this isn't really a walkthrough because I'm learning on the fly but I felt it was worthy of sharing as the story will probably return some good advice. A bit over a year ago I picked up a Breitling Navitimer movement complete with crown, dial and slide rule. There were a few parts missing and a couple of broken pieces but I corrected those issues in short order and stored the movement away for that day when a case would come available. A few months later just such a case came up on eBay and I picked it up for a fair price even though the bezel was missing. The case has some issues- for example the threads for one of the chronograph pushers were stripped out (note the pusher held in with glue below) and it looks like the bezel was removed with a forklift. I widened the stripped out pusher hole and pushed in a stainless steel sleeve which will be tapped to accept the proper pusher (2.5mm tap, pitch 0.20mm). This work was completed some time ago then the project stalled out as replacement bezels are about as common as unicorns. Frustrated by this I decided to roll up my sleeves and turn a replacement. The correct bezel is approximately 3.25mm tall with a 41.0mm outside diameter, so I started with a 304 stainless steel ring which is 6.00mm tall and has an outside diameter of 41.0mm. I've not turned stainless steel on the lathe before and was hoping to start with a softer grade (say 400) but was limited by what would fit in my three jawed chuck. Now for anyone who is thinking, "you can't turn stainless like that on an 8mm lathe" you are of course correct (for the most part) but try I did and with a carbide graver I was able to make pretty quick work of the piece- chips were flying nicely but OH BOY DOES IT GET HOT! About twenty seconds of turning was all I could do before cooling the graver; this is of course why you always see stainless steel milled or cut under a stream of coolant. Since my workspace is limited and I don't want to make a big mess I moved on to Plan B (which was actually Plan A because I never figured I'd successfully turn a replacement stainless steel bezel on the lathe). Plan B was using brass, which meant I could put the carbide gravers away as they aggressively dig into brass like it's chocolate. This time I started with a thick brass washer and my usual HSS graver. Pretty soon I was knee deep in shavings (which are useful for bluing screws). I turned the washer to a ring with an inside diameter of 37.5mm. A recess was then cut 1.0mm deep to accept the crystal on one side and the inner bezel ring on the other. The inner bezel ring (on which the bezel is mounted) is about 1.8mm tall so the recess needed to be about 2.00 mm tall to accommodate the inner bezel ring and the slide rule. Getting the dimensions just right was achieved by using a black sharpie and a scribe (needle in a pin vice) to mark out the cuts then constantly checking and rechecking the fit. Once a proper fit to the case and crystal were achieved I proceeded to cut the exterior of the bezel. The cuts were done by eye then checked and rechecked for proper fit and finish. The outside diameter of the bezel where it meets the case tapers to 40.0mm and if I cut too much there's no way to add the material back. The current status is promising- below are the pictures as it stands today without notches. I'll be cutting the notches this weekend using a fine round escapement file. To ensure the notches are evenly spaced the plan is to remove a stainless steel bezel from another Navitimer I own and glue it to this one. The notches in the stainless bezel with then serve as pilot holes to guide my file. Once completed the plan is to have the bezel plated and the case professionally refinished (laser welded, etc.). Even though it's not correct for this watch, I'm thinking I'll probably have the bezel yellow gold plated as it will be easier to sell when and if a proper stainless steel bezel ever comes to replace it. A few things I've learned along the way that might be helpful- Don't get discouraged- I was 95% done two days ago when the bezel slipped off the chuck at speed and deformed- I had to start the whole thing over again. I did get to test my notch making skills on the bent piece though and that's worth something. A three jaw chuck isn't really the right tool for this job. There is a five or six jawed chuck for holding bezels, if you can find one, I'll bet it's a lot grippier. Turning large brass rounds on a lathe is great for your confidence. You'll think you're a master until it comes time for clean-up when you realize you really do need a proper machine shop (separate from your service workbench).
  22. 4 points

    Lew & Me

    Here is my cat "Lew" helping me adjust a pocket watch and adding a hair to places one should never be.
  23. 4 points

    Polite question and answers only

    I like to think this is a very friendly forum. I am sorry nad that you might have had bad experience.
  24. 4 points

    D. I. Y. Watch Timing Machine.

    So I played a bit in Solidworks, and this is what I got. A friend of mine helped me with the 3D printing. sup_2.STL mic 2.STL pesa.STL sup_1.STL the editables: mic 2.SLDPRT pesa.SLDPRT sup_1.SLDPRT sup_2.SLDPRT ansamblu2.SLDASM
  25. 4 points

    ERMI watch A. Schild movement

    One of my oldies...