Thread: Reducing costs

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  1. #1
    Hi , I am thinking about keeping the cost down on my rockcliff styled ganntry build by using 2 nema 17 for the y axis and 1 fof the z and a 23 for the x, whats the general thinking on this, I will be using a boch 500 router and will be cuting upto 18 mm ply.
    And I will be using Chinese moters and electrics from ebay, any thoughts on those please.
    Happy are they who dream dreams and are willing to pay the price to see them come true.

  2. Don't see how you can use 2 motors on Y as Y is across the gantry. Also Nema 17 are generally lightweight, good for 3D printers but will struggle to pull a heavy router around through ply unless you're just tickling the surface. Anyway the cost savings will be negligible once you throw them all away and do it right... How big is this machine?

  3. #3
    Neale's Avatar
    Lives in Plymouth, United Kingdom. Last Activity: 5 Hours Ago Has been a member for 4-5 years. Has a total post count of 997. Received thanks 170 times, giving thanks to others 5 times.
    I think that the OP is using the American XY convention, rather than the European. Do Americans stand in a different position when they use these machines? Just idle speculation!

  4. Southport UK, 6 posts in 6 years, started the rockcliffe in 2009 then tried to sell it partially built in 2010, has asked about Chinese drivers before in 2010 as well... no point in reiterating the answer, it hasn't changed. Tony, try using the search function, the Chinese question has been done to death. And if your Rockcliffe is using threaded rod a pair of cheap Nema17s aren't going to move it fast enough to cut anything harder than butter...

  5. #5
    My input ends with the words "Rockcliffe".!! . . . Only good for burning and then still under performs.

  6. #6
    Quote Originally Posted by irving2008 View Post
    Southport UK, 6 posts in 6 years, started the rockcliffe in 2009 then tried to sell it partially built in 2010, has asked about Chinese drivers before in 2010 as well... no point in reiterating the answer, it hasn't changed. Tony, try using the search function, the Chinese question has been done to death. And if your Rockcliffe is using threaded rod a pair of cheap Nema17s aren't going to move it fast enough to cut anything harder than butter...
    6 posts in six years? Tried to sell it partially built? What relevant's does this have to my question about using 2 nema 17 on a 4 axis machine ? I sold my first 3 axis carcass true , but had forgotten I had alredy asked about Chinese moters , please note 4 axis as I understand it = 2 moters on the y (?) Axis I thought 2 17 moters in sync would be =to the job , obviously not but still your answer was the only one anywhere near to my question.
    So thanks!
    Happy are they who dream dreams and are willing to pay the price to see them come true.

  7. #7
    Quote Originally Posted by tonygagey View Post
    6 posts in six years? Tried to sell it partially built? What relevant's does this have to my question about using 2 nema 17 on a 4 axis machine ? I sold my first 3 axis carcass true , but had forgotten I had alredy asked about Chinese moters , please note 4 axis as I understand it = 2 moters on the y (?) Axis I thought 2 17 moters in sync would be =to the job , obviously not but still your answer was the only one anywhere near to my question.
    So thanks!
    I did wonder the same myself Tony and understood it to mean dual motor, single axis, I'm quite familiar with the Rockcliffe machines as I built a model A A few years ago now. Sorry about the response you received from others.

    Have a search on the forum if your thinking about the TB driver system as there is two threads I know of that talk about this board, if it's another board let us know which and we may be able to advise, get yourself nema23 motors the 3Nm version, they cost more I know but they will serve you well and allow you to make use of them in the future if you do decide to build something new and quite a bit more substantial, their pretty much the "go too" motor for these machines.

    .Me
    .Me

  8. #8
    Well bullit bit! Ordered system 4 from roy at diycnc. Just waiting for him to post when power supply in.
    Also going to build new carcase using Dave Gatton's Sidewinder plans. To ensure accuracy I am having the plans made as a pattern laser cut in 2mm steel. Expensive but I think it will be worth it !

  9. #9
    Cool look forward to seeing the results, keep us updated!
    .Me

  10. #10
    Got motors etc from roy today, anyone know were I can get nema 23 mounts from that wont take 6 weeks or cost a small fortune !
    Happy are they who dream dreams and are willing to pay the price to see them come true.

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