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Bitao

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Posts posted by Bitao

  1. These buttons actually do more to look as pretty as possible and have enough tensile strength; I tried four different types and amounts of copper wire (each 0.6 mm in diameter) , made by hand bending and arc welding (not tin welding) . After selection, the actual qualified only about half. Although it's hard to tell the difference when you finally install it.

     

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  2. 8 hours ago, BANYAN said:

    Love those deadeyes and offer congratulations on your resolving a better way of making them.  I think Greg (dvm) says it all in his post.

     

    cheers

     

    Pat

    Thank you for your kind words. We all try to do the same thing with different personal understandings in order to do it better. Greg's rich knowledge and experience is no doubt an example for us to follow.

  3. 1 hour ago, allanyed said:

    Bitao

    In making the jig, in order to drill the holes that hold the three pins, did you use a rotary table on a drill press or a mill?  

    Allan

    Yes, Allan. The brass jig is the key to the whole pulley production, and three ejectors must be accurately positioned. If the deviation is too large (I usually do not exceed 0.03 mm) , it will affect later turning, especially after turning, you will find that the next operation can not be performed due to the difference between the centers. This is difficult for the average player. When I make it, I clamp the copper rod (pre-lathe outer circle) directly into the milling machine bench clamp, first make sure it is vertical. I didn't use the dial. These three holes are not evenly distributed, but within the same radius, you just need to precisely position the center of the circle, and then you can open the pre-determined radius data, because I use the edge finder and the raster ruler to pre-position, so, the precision after processing can meet the requirements. In addition, the precision deviation of the inserted thimble can not exceed 0.05 mm, and the protruding part can not exceed two-thirds of the thickness of the pulley, otherwise it will be difficult to clamp the block in the future or to remove it after forced installation.

  4. 2 hours ago, dvm27 said:

    I have never seen deadeyes made in the way you have Bitao. Drilling the holes in the square stock before turning the deadeyes to their final diameter solves several problems inherent in making them. Not only does it remove the need to make a special jig to drill the holes after turning the stock on the lathe but it also insures that the holes are correctly positioned along the equator of the deadeye. As I note Ed made them in the traditional way in his books I assume you have reinvented the wheel, applying the logic you display elsewhere in your construction. Brilliant!

    Thank you, Greg, for your very professional analysis and comments. I did spend some time looking for ways to make it more accurate. As you said, there are some problems with using a special jig to drill through the naked eye before steering. I think it is more suitable for low precision. I first use the milling machine raster ruler in any slightly larger size, pre-cut into the square of the wood, accurate completion of the three positioning holes, and then insert the copper rod positioning pin, and then the outer ring turning, rope groove, curved surface operation. Although the middle needs to change the pulley processing surface a little trouble, but the copper rod pin after precision processing and positioning, no matter how the conversion, the pulley center point is basically unchanged, it can ensure that all pulleys after processing are almost the same.

     

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  5. This is the third full-structure sailing work I have done in more than four years since I came to this forum. Two of them used EDT drawings, and I admit I really liked his design and the wonderful production process. Unfortunately, so far, the work is almost complete and Mr EDT offers no guidance or expression. For some questions I can only rely on their own understanding and guess. Work is not necessarily perfect but certainly not the last, I think this is also a learning process to improve, for the next work to do more perfect preparation. Thank you for your support.

  6. 1 hour ago, French Mr Bean said:

    Thank you for the answer. My question concerns the part circled in blue:

     

    Sure enough, your question gave me the wrong answer. I got it from your screenshot, but honestly, I couldn't get the right answer, the only thing I could do was follow the drawings and the author's basic steps. In my opinion, any drawings and designs will have inaccuracies or unclear; but for me, it is my fault that I can not produce the drawings properly, and I can not tolerate myself making such mistakes.

     

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  7. 37 minutes ago, French Mr Bean said:

    For me, a forum is a place of exchange between members sharing the same passion.

    Also, I don't understand why my question in post 345 has not received a concrete answer from you. (Your answer given in post 347 doesn't add anything.)

    First of all, I would like to thank you for always coming to my post with great attention and enthusiasm. I'm sorry to have caused you so much trouble and uneasiness. I like every serious and friendly person here, regardless of nationality and gender. But My English level is very limited, with the help of the Internet translation, sometimes some of the vocabulary and sentence understanding is wrong. It may have something to do with the language habits and understanding of different countries. I hope I didn't offend you. The problem you have just mentioned may not be what we understand. Really embarrassed me. I don't know what to say... It would be better if the questions below were accompanied by screenshots so that I could understand them better.😅

  8. 10 hours ago, bruce d said:

    Nice work, Bitao, and thanks for showing the secret tool that makes the magic.

    Thank you for your attention and praise. In the past 20 years, I not only like to make a variety of models, but also the use of their own limited processing conditions keen on a variety of tools and development, especially the professional model-making tools. After all, this hobby circle is too small, there are very few things to buy on the market, many of them are not applicable or have some defects. To develop a good tool, you must have enough experience to know what you need most. But some of the tools on display in China a few years ago were used and commercialized by some people, especially unethical companies, and it hit me so hard that I had to keep them and cancel important shows. I respect the work of every creator and producer, but I will not tolerate unauthorized theft for personal gain.

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