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Type: Posts; User: pippin88

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  1. Replies
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    Re: Trying to finish a 15 year old project.

    You can use a single switch as both home and limit. In almost all cases this is easier and does not have a downside.

    The move would exceed error can mean two things.
    1. The move is bigger than...
  2. Re: Are these parts suitable for cnc router

    BST Automation is a good store. I've had good personal experience with them and others on CNCZone have also.

    True servos are available for a similar price / not much more.
  3. Replies
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    Re: Jake's 4x8 CNC Build

    Good to have an answer.

    So machine the weldment, check the geometry is satisfactory, further machining as necessary and then get on with the build.
  4. Re: ATC Spindle Assembly using a Chinese BT30 Spindle Cartridge

    I'll be watching.

    I saw your router build log at the time - can you post the rest of the build?

    Looks like you are using a very long cutter for that MDF...
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    567

    Re: Jake's 4x8 CNC Build

    I'm not an engineer / machinist but my understanding is that at least the majority of movement will occur at the time of machining. I could be wrong. I spent quite a while trying to get a clear...
  6. Replies
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    Re: Trying to finish a 15 year old project.

    Yes, the easiest way is to install LinuxCNC as a full operating system install. That way it comes with all the necessary packages.

    Downloads
  7. Replies
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    Re: Small Desktop Router for Leather Molds

    May be worth spending a little more on the CNC router and you may be able to slowly cut soft metals.
  8. Replies
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    Re: Trying to finish a 15 year old project.

    I recommend LinuxCNC. Free. Powerful. Stable.

    Software can deal with different screw pitches on different axes.

    Limit and home switches: normally closed is preferred as a break in the wire will...
  9. Re: Planning a new build. CNC laser cutting in Brisbane?

    You may find laser cut steel is cheaper.

    No reason to use aluminium if you are getting someone to laser cut the parts.
  10. Replies
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    Re: epoxy granite sliding on epoxy granite.

    Peter,

    Thanks for the reply.

    I'm interested to see any references with experimental data.

    What I'm finding is lots of papers that report highest packing fraction when a multiple size...
  11. Re: Moving table (fixed gantry) with two ballscrew

    It's important to differentiate weight and volume here.

    The EG threads talking about 90% aggregate and 10% resin are talking about the proportions in the mix by weight. They are not talking about...
  12. Replies
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    Re: epoxy granite sliding on epoxy granite.

    Peter,

    I'm interested in your last comment about single particle sizes.

    Can you elaborate? Any references for testing stiffness and damping?
  13. Replies
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    Re: Granite base router

    Have to you looked at the basic values for stiffness of the steel vs (laminated) granite beam?
    That's where you should start.

    How are you planning to mount the linear rails?
  14. Replies
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    Re: Large Epoxy granite VMC building

    Kern uses epoxy granite with aluminium inserts for linear rails beds. They cool the aluminium and apparently use it due to good thermal conductivity.
  15. Re: New Machine Build - Massive CNC router for timber components

    A gantry design may still be feasible for easy loading.

    1. Design so the work table is the highest surface (other than the gantry) - all linear rails, screws, wires etc are out of the way.
    2....
  16. Thread: Concrete VMC

    by pippin88
    Replies
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    11,780

    Re: Concrete VMC

    I think for a new build (not fixing up a manual machine like Stefan), the best way is to integrate in injection points / passages for use when epoxy tramming.

    Have set screws as well as the hold...
  17. Re: Is it at all possible to build a metalworking CNC router out of aluminum profiles

    Been a while since I've bought steel but that price seems reasonable, particularly if you can buy per metre (not by the whole length).
  18. Re: Beginner design advice for small 24" x 24" machine

    Sounds like unsupported round rails? Bad idea.
  19. Re: Building Steel Frame Gantry Router for wood, MDF, and maybe more

    I think epoxy leveling can work well, but it has its challenges.

    One is surface tension - this means you need a thick pour. It's just like water on a flat surface, a small amount will form drops...
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    Re: AIO Garage Project

    Always interesting to see a build.

    Adding extra linear rails (4 of 20mm on X axis) is not of benefit and actually introduces alignment problems etc.
  21. Re: Looking for some advice v carving letters in 3mm aluminium

    Aluminium varies a lot by grade / alloy.

    Grades for bending will be very gummy and hard to achieve clean edges.

    You may just be using the wrong material.
  22. Replies
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    Re: PM-30MV with BT30 Spindle?

    Probably better to buy a mill with a 30 taper spindle
  23. Replies
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    Re: Designing new Router called Maximus

    Peter,

    Can you post a model / picture that includes only the bits you would be selling? To make it clear what is the DIY bench bit etc.
  24. Re: CNC converted G0602 is all over the place.

    Backlash?
  25. Re: Building Steel Frame Gantry Router for wood, MDF, and maybe more

    My build may be of some interest as my frame design is somewhat similar.

    https://www.cnczone.com/forums/diy-cnc-router-table-machines/241830-4x2-welded-steel.html
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