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Type: Posts; User: andy_ck87028

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  1. Replies
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    Nema34s 3 axis

    I am thinking Pi and protoneer for my 3 axis with nema 34s. Will the Pi and Protoneer handle the gecko drivers / current load or am I asking too much?
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    He might be struggling .... Are u a charity?

    He might be struggling .... Are u a charity?
  3. Replies
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    487

    place them horizontally? That's what I did....

    place them horizontally?

    That's what I did. The key consideration is the required Z axis clearance however if you build a longer x axis and have the y rails slightly further apart, then z axis...
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    905

    The axial play originally referenced was on the...

    The axial play originally referenced was on the spec sheet for the ballscrew.

    My understanding of the term axial play is loosely referred to as slop.

    For example if you put a clamp on the...
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    905

    I'm no engineer but conceptually it would appear...

    I'm no engineer but conceptually it would appear that axial play on a ballscrew is totally irrelevant if the linear guides are doing their job properly.

    Therefore, assuming that there is no axial...
  6. Thread: shaper?

    by andy_ck87028
    Replies
    9
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    702

    A realtime link would require appropriate...

    A realtime link would require appropriate software.

    It can be done through steps; i.e. probe to markout co-ordinates in dxf form with entry into Cam. The benefit with the latter is the storing of...
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    probably but give them a call. You will find...

    probably but give them a call.

    You will find they are extraordinarily disorganised and bureaucracy will be your hurdle.

    Get through to the P/A to the Engineering faculty .... she was the only...
  8. Replies
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    True but slop is the enemy of people building...

    True but slop is the enemy of people building with skate bearings (like me) and I'd say it would be a good move unless you have purchased high quality rails / linear bearings.

    Rigidity could...
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    There is a range of books from the Special...

    There is a range of books from the Special Interest Model Books series with one dedicated to manufacturing your own spindles.

    The book is number 27 in the series and is by Harprit Sandhu. I...
  10. Replies
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    1,053

    Endgrainguy Being in Australia, I'm a long way...

    Endgrainguy

    Being in Australia, I'm a long way from you.

    Are there any men's forums in your neck of the woods?

    Rather than CNC expertize, your problems might well be solvable with the help...
  11. Replies
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    457

    Alex My pleasure. An alternative to having...

    Alex

    My pleasure.

    An alternative to having a variable height table is to have multiple fixed positions on the gantry.

    That would work better for a cnc router with a moving table but the...
  12. Replies
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    457

    An interesting question. The distance the z...

    An interesting question.

    The distance the z axis must travel primarily depends upon how deep you want to cut.

    However, in the most part you might need to cut thin pieces and only have a need...
  13. Replies
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    707

    I used a different approach. I am not an expert...

    I used a different approach. I am not an expert welder and I know that all sorts of distortion has crept into my frame. However, I don't care and that is because I have introduced positioning...
  14. I bought new steel and inmo I paid too much. ...

    I bought new steel and inmo I paid too much.

    After I got stuck into the project, I found a scrap metal merchant where the metal on offer was much cheaper and a lot heavier.

    Welding is...
  15. Replies
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    1,826

    If it really is only foam or plastic, consider...

    If it really is only foam or plastic, consider the flexible drive shaft attachment that Dremel offers.

    The drive shaft decouples the cutting head from the motor by about 500mm.

    All you need...
  16. Replies
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    Thought challenge - hobbiest perspective

    Why does it need to be flat?

    For example, if the material you are cutting is non rigid, then it will assume the bed it is laying on. If that bed has been pre-trued to be equi-distant from the...
  17. Replies
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    I went mild steel. Mass is your friend. Steel...

    I went mild steel.

    Mass is your friend. Steel is easy to work with.

    I used angle grinder, bench press and an old arc welder I picked up for $75.

    I've had a ball.

    Not familiar with...
  18. Replies
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    686

    I followed similar design principles and...

    I followed similar design principles and leveraged off my background which is IT which has principles leveraged off engineering.

    There is a field within IT called object orientation (OO) which...
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    Hi There are quite a few threads on this forum...

    Hi

    There are quite a few threads on this forum around belt and backlash parameters.

    Its been a couple of years since I read them all but recall that the profile is the important criteria. Some...
  20. Replies
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    5,063

    Hi I should be able to help you with that...

    Hi

    I should be able to help you with that pretty comprehensively.

    My machine is manufactured but not yet running. I bought a camera a couple of weeks ago and am creating a portfolio of sub...
  21. Replies
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    5,063

    Only if you don't use the correct belt and pulley...

    Only if you don't use the correct belt and pulley ... any supplier will guide you



    Define better ... irrespective I have found belt both cheap and easy to build


    One of the major reasons I...
  22. Replies
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    Oh yes....... Some of the earlier pictures of...

    Oh yes.......

    Some of the earlier pictures of the head assembly are now history. Bin fodder!!

    I'll get some pictures up of the finished version soonish

    Andy
  23. Replies
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    Well 18 months later and the machine is now...

    Well 18 months later and the machine is now manufactured.

    I am now going through the process of aligning and tightening; bedding down, etc.

    I have also just got me a camera :)

    So, I thought...
  24. Try this option ...

    Try this option

    http://www.cnczone.com/forums/showthread.php?t=43088
  25. try this.......

    try this....
    http://www.cnczone.com/forums/showthread.php?t=51656

    andy
  26. Replies
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    I have heard that stone blood is an excellent...

    I have heard that stone blood is an excellent alternative to xylan 1424 :)
  27. Replies
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    why go to the expense and bother of UHMV? ...

    why go to the expense and bother of UHMV?

    Surely a good paint job would do as well if you are going to use sheet metal.....

    Andy
  28. Replies
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    That's exactly what happened to me when I arrived...

    That's exactly what happened to me when I arrived in Australia and I am convinced that is why I am now obsessed with CNC :)

    Andy
  29. Replies
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    I would look at the different logs on this site...

    I would look at the different logs on this site and determine which best suits your needs.

    I guess mdf is out for ice.

    happy reading

    Andy
  30. Replies
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    I started bolting; then I thought about bonding...

    I started bolting; then I thought about bonding and bolting vs welding.

    I bought a cheap arc welder and haven't looked back.

    Welding is great fun.... :)

    just keep your metal min 3mm thick.
    ...
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