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  • elf
    replied
    Originally posted by thin-woodsman View Post

    The colvintools site has PDFs that appear to have all of the necessary plans.
    Colvintools' plans are for version 2 which has quite a few refinements over v1. Jon Magill's site should be back online soon. He's having provider issues.

    Leave a comment:


  • thin-woodsman
    replied
    Originally posted by J Tiers View Post
    Looks like the original is long long gone. I'd have considered building one from plans. Not interested in a kit, oh well.
    The colvintools site has PDFs that appear to have all of the necessary plans.

    Leave a comment:


  • J Tiers
    replied
    Looks like the original is long long gone. I'd have considered building one from plans. Not interested in a kit, oh well.

    Leave a comment:


  • elf
    replied
    The MDF rose engine has turned the OT world upside down While there are still a lot of purists who think you must have a Holtzapffel rose engine from the 1800's, there are even more using the MDF.

    My rose engine isn't an MDF or a Holtzapffel. I designed and built it using linear rails, aluminum extrusions, MDF, and a lot of 3d printed parts.
    Click image for larger version

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  • DR
    replied
    I attended the ornamental turners conference in the Seattle area around 2010. I did a few sample pieces on my CNC mill to show on the display table. They got lots of interest and speculation about what specialized OT accessories were used to create the complex cut patterns. After a while I admitted they were CNC'd. The reaction was immediate, the OT people were not happy.

    OT can be a tedious process of setting up complex mechanical devices. And then we have the expense, the real addicts will have machines in the $75K range (I know 4 individuals with well over $100K invested).

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  • Toolguy
    replied
    Got it. Thanks!

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  • elf
    replied
    The OTI website
    There is an updated version of the MDF Rose Engine here. They are selling kits as well as completed machines.
    Click image for larger version

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  • Toolguy
    replied
    Very interesting. I had not seen this before. All the links seem to be dead. Are any of these guys still around?

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  • elf
    replied
    It's time to bring this up to the top again

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  • Tony Ennis
    replied
    Excellent thread necromancy here. I'll have to forward it to a friend who likes such things.

    Leave a comment:


  • kc5ezc
    replied
    As usual, Mark: first class work. The plans and instructions for free?
    Downloaded and saved. Looks like a lot more fun than CNC, but both
    are a world of fun if you are not trying to make a living from them.
    Just what I need, another project. If I can get the rest on my stuff fixed
    and up to speed I'll give the OT project a go.
    See Nick Carter's info for some G-code starters for CNC.
    Thanks again for a very interesting post.

    Leave a comment:


  • Mad Scientist
    replied
    The detailed Ornamental work that can be done with a Holzapfel or RE lathe has always fascinated me. Thus a couple years ago when I made a rather large storage and display cabinet for friend wife I wanted to add some decorative columns. Of course the thought of just going out and buying something was never considered. So I kludged together the following accessory for my lathe. It is not as pretty as Jon’s machine but it got the job done.



    The cutting tool is a small router mounted on the end of arm that’s movement is controlled by two cranks, the length of throw of each crank is adjustable.

    Viewed from the other side, by changing chain sprockets I can change the speed of one crank in relation to the other. Like Jon’s machine the whole thing is hand powered via the hand wheel. Turning the hand wheel cause the router to jump up and down and move while moving in and out at the same time the long rod on the other side, with a sliding keyway, drives the head stock spindle. This speed can be changed by using different size chain sprockets. The normal thread cutting gears and half nut are used to control feed.





    This contraption is able to produce lots of interesting designs, however it is difficult to predict exactly what they will look like until you actually run a test piece. Then if you like what you got you need to be prepared to run all of the pieces that to want, because if you stop and change the setup you will find going back to what you had can be a challenge. But it is definitely fun to play with.

    P.S. Hmmm. $299 sound reasonable, and we wouldn’t talk about what mine would cost.

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  • Mark Hockett
    replied
    Hal,
    The kits are $299. The price of the components purchased individually would probably be more than that, but Jon buys the stuff in large quantities so he can sell them for that. The kit includes every thing to build the lathe except the 1/2 sheet of MDF, sealer and glue. It also doesn't include the cross slide, tool post, cutting frame and the parts for the pivot that the cross slide mounts to. These items are more of an individual preference. Used Hardinge cross slides can be purchased on ebay or many other cross slides can be used. The Harbor Freight drill press X slide can be used and the cutting frame can just be clamped in the vise so there is no need for a QCTP or a person could build an X slide with many other scrap pieces. We bought an old Delta lathe X slide at the scrap yard for $10. We are going to try that one on the lathe.
    Mark Hockett

    Leave a comment:


  • Dawai
    replied
    Why is there not a "tracing" outfit for a lathe? I mean I made a sheetmetal template for mine, but.. What a pain in the butt. I had blisters on my hands from cranking handles.


    Example? making english wheel roller profiles.. Chuck a bought wheel on the left side of the through hole, cutter on the right side..

    Enough passes and it matches left side. that pivot could be as simple.

    Leave a comment:


  • Hal
    replied
    Mark

    Thanks for pictures and posting the links. Its very interesting to see how a Rose lathe work and some of what they can do.

    Now the big question question, how much are the kits selling for?

    Hal

    Leave a comment:

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