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Thread: Mass production with the lathe attachment

  1. #1
    Join Date
    May 2011
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    ny
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    Default Mass production with the lathe attachment

    I made this lathe not long after I got my bot I had a job to make chairs that had turned legs for a church my first real big job using the shopbot back in 2004.

    It does not get used very often but it comes in handy for the occasional job.

    I had to make 85 spindles for a 1908 house that is being restored the wood I used was eastern hemlock purchesed from the local sawmill and then dried in my kiln. Hemlock has great rot resistance but it tends to chip I found slowing the lathe to 200 rpm helped a lot normal speed on hardwoods has been 400.

    The cutter was a 6mm solid carbide ballnose. The final details and sanding was done on the manual lathe.








  2. #2
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  3. #3
    Join Date
    Nov 2006
    Location
    Lexington, Virginia
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    Default

    Very cool! I have been thinking for some time of a similar setup on my bot. How long does it take to do each spindle?
    T Fix
    2000 ShopBot PRT 96 CNC Tool

  4. #4
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    ny
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    Quote Originally Posted by cwshop View Post
    Very cool! I have been thinking for some time of a similar setup on my bot. How long does it take to do each spindle?
    They took 19 minutes each I had to slow it down a lot for hemlock .3 ips .07 stepdown faster than that and I was getting a lot of chipout on the beading

    I turned sugar maple legs a while ago and had good results with 1 ips at ,1 stepdown using the 6mm ballnose at 400rpm




  5. #5
    Join Date
    Nov 2006
    Location
    Lexington, Virginia
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    Default

    Thanks for the reply. I noticed in the latter you didn't use the speed reduction. How did that factor in? You have give me the courage to give this a try. I may ask you something again in future. Keep turning!
    T Fix
    2000 ShopBot PRT 96 CNC Tool

  6. #6
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    ny
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    cwshop, When I originally made it it was from parts I had laying around, the pulleys and motor ended up running it around 400 rpm that worked fine for the hardwoods I had been using it for. I was getting a lot of chipout with the hemlock so I slowed it down and it went away. Trial and error got me to where I am at. Half the fun is figuring things out.

  7. #7
    Join Date
    Jan 2008
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    Hobby-Tronics, Chiloquin Oregon
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    1,356

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    What does the design file look like. Are you basically machining in a straight line? Russ
    AKA: Da Train Guy

  8. #8
    Join Date
    May 2011
    Location
    ny
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    Default

    Russ, yes it runs in x and z I drop the y stepper so the gear is not on the rack and clamp the carriage.



    I made a video

    https://vimeo.com/318999193

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