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The Buffalo

Discussion in 'CNC Mills/Routers' started by Paruk, Oct 1, 2014.

  1. Paruk

    Paruk Journeyman
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    Did this today.



    Dust extraction works very good, but still a tiny bit manages to escape(maybe about 1%). The very fine MDF dust, though, is all gone into the collector. I can live with this.
     
  2. Tweakie

    Tweakie OpenBuilds Team
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    Excellent work Paul. :thumbsup:

    Tweakie.
     
  3. Paruk

    Paruk Journeyman
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    Thanks, @Tweakie. It shows things like that are also possible with an OX. I made some lesser choices for the cutting sequence, which caused some pieces to brake out and block the dust extraction. I had to pause and clean it out before continuing the cutting. Next one I will pocket out those parts to avoid this. Hope that the next "test" project will be better.
     
  4. Tweakie

    Tweakie OpenBuilds Team
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    You could always add 'tabs' in the CAD/CAM which will hold the loose waste parts or alternately, my preferred method is to, fix the work to the spoil board with strips of low tack, double sided, sticky tape then clamp (the double sided holds the waste parts in place).

    Just a thought.

    Tweakie.
     
  5. Paruk

    Paruk Journeyman
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  6. Tweakie

    Tweakie OpenBuilds Team
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    Others on the Artsoft forum have used the econo probe and I have not read anything bad said about it.

    The only drawback from mechanical digitized probing is that it is incredibly slow for any reasonably high resolution results but if time is not a priority just let the probing software run whilst working on something else.

    Tweakie.
     
  7. Paruk

    Paruk Journeyman
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    Yeah, heard about that. I'll try some models in different resolutions to get an idea about the speed of digitizing with a probe. I don't expect to use it on a daily base. More for incidental cases in which someone wants to have something copied. Thanks anyway for the reply, Tweakie!
     
  8. GrayUK

    GrayUK Openbuilds Team Elder
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    Paul
    I would appreciate it if you would keep us up to date on one of these probes. I've had thoughts on using one of these for some time. :cool: The ones I've seen are very much more expensive!
    I was told of an art gallery, willing to pay good money, for pieces of an intricate picture frame to be duplicated and replaced. :)
    Seems to be the right tool for the job. :thumbsup:

    Gray
     
  9. Paruk

    Paruk Journeyman
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  10. Paruk

    Paruk Journeyman
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    Tried some engraving on hard board, as test before doing the real thing. Wow, that took about 10 hours in 2 sessions. Have to try to shorten that, must have done something stupid with making the gcode. Anyway, a little video of Vectric doing the virtual cutting.

     
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  11. Nick W

    Nick W Well-Known
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    Are those vectors included in the Vectric software? If not, maybe they can be joined or cleaned up a bit to reduce the number of vectors. I have been playing with the trial version of Aspire and noticed a similar thing when I imported a vector with text on it versus the same text inserted into the design using the Text tool. Much more efficient simulation.
     
  12. Paruk

    Paruk Journeyman
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    No. The procedure is JPG -->AI --> Vector --> Aspire. I used a 60 degree V-bit to engrave these drawings. I think I should have used V-carving instead. But in the virtual testing I was not happy with the depth of cutting of the V-carve, so tried to use the engraving for a more controlled depth. Just have to play around with the V-carving to get it exactly right, I guess.

    The good thing of this exercise was, that I now found a very quick and relatively easy way to convert any picture into vectors. It opens up an infinite source for creative work!:)

    The other good thing was to see the Buffalo work for 7 hours in the first session without missing a beat. The second session the same. That gives a lot more confidence in the machine and makes my hands itch to do more and more, and more, and more and ….even much more!
     
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  13. Tweakie

    Tweakie OpenBuilds Team
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    Sounds like you have really caught the CNC bug now ;)

    Tweakie.
     
  14. Paruk

    Paruk Journeyman
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    And as you could see on the other thread, it bit me!:(
     
  15. Paruk

    Paruk Journeyman
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    So replaced today all 4 stepper drivers, calibrated everything again and even managed to finish of the job that I had to stop because of the driver problems. The new ones work very good and seem to be less vulnerable for power surges or other EMP or EMS (whatever it is called). Cutting again as precise as possible with the OX, within 0.05mm. Not bad.

    I was making a female mold out of MDF to pour some concrete ring parts for around trees. When all is waterproofed and the parts are ready, pictures will follow!:)
     
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  16. Paruk

    Paruk Journeyman
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    Received the touch probe yesterday afternoon. Unfortunately, no time the next days to hook it up and do some testing. It doubles as a Z offset/tool offset probe. So can take away some cabling, less chance of interference.

    IMG_0672.JPG
     
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  17. Tweakie

    Tweakie OpenBuilds Team
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    That looks good :thumbsup: I will be most interested to hear how it performs.

    Tweakie.
     
  18. GrayUK

    GrayUK Openbuilds Team Elder
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    Ditto:
    Gray
     
  19. Hackscribble

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    Hi Paruk

    Sorry for a noobie question ... I'm assuming you 3D printed your belt clip parts? What material did you use?

    Thanks

    Ray
     
  20. Paruk

    Paruk Journeyman
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    I used ABS for them. For the dust collection (the flashy blue colors) I used PLA.
     
  21. Hackscribble

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    Thanks, Paul. Now I just need to decide what colour to get mine in :) The first of many decisions!
     
  22. Paruk

    Paruk Journeyman
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    So, I was busy with this little project to make a female mold out of MDF for a tree ring. Huh? A tree ring? Yes, a ring you put around a tree to make it look nicer in your garden. Easier to mow the grass around it and cleaner when throwing some mulch around the roots. Build the mold out of 6 layers of 15mm MDF and a last layer which had a nice lotus flower engraved in it. Next steps was smoothing the contact surfaces with some filler, wax the whole thing with beeswax and finally smear some vegetable oil all over as a kind of release agent. Then we poured the concrete in, tapped the sides to remove air and covered the top with some polystyrene to keep heat and moisture in while curing. And then….. an all to eager impatience got a grip on me and I just had to try to get the only partially cured piece out of the mold. That didn't go that easy, so I first took the plate with the lotus flower off, just to see that some of the concrete was holding on to the mold quiet persistent. But nothing to be worried about, yet. Removing the piece out of the rest of the mold proved to be a bit more difficult, so I decided to use the bandsaw to open up the mold from the side to create room for the piece to get out. Long story short, during the whole operation I adjusted my expectation of the final result downwards while I was going on, only to see the piece breaking in two and chipping of here and there, leaving it quiet useless. If I only could have waited till tomorrow morning………:banghead:

    So, tomorrow morning when daylight has arrived again, I'll make some pictures of the end result to make the embarrassment nice and complete by posting them here. Please punish me with ruthless critics. don't get rude though.:zipit:

    I'm now going for a male model and some RTV silicone to make a proper mold (which I should have done to start with) and start production of our nice tree rings. Grrrrrrr…..:mad:
     
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  23. GrayUK

    GrayUK Openbuilds Team Elder
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  24. Paruk

    Paruk Journeyman
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    Yes, you laugh! You, you, you …………..mmmmbbllblbl;)
     
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  25. Paruk

    Paruk Journeyman
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    The pictures…

    IMG_1294.JPG IMG_1295.jpg
     
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  26. Martin.Barfoed

    Martin.Barfoed Journeyman
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    Hi Paul

    Great idea with your tree rings. Apart from letting them cure for some more time:) have you considered to put some steel reinforcement inside?
     
  27. Paruk

    Paruk Journeyman
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    Yeah I did. This mixture was just portland and sand, not so strange it broke. The final ones we're going to use a mix of portland, sand and small size pebbles. That should do the job. If not than I will start using FRC (fibre Reinforced Concrete). The parts are small, so I think rebar will not be necessary. But…..we'll see how it finally turns out. First have to get the RTV silicon for the mold.:)
     
  28. Paruk

    Paruk Journeyman
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    Getting material for making molds here in Thailand is (not surprisingly!) again a ………. ah well. So time for plan B. Making a vacuum thermoforming machine to use polystyrene and/or ABS sheets for molding. Since our oven was having some problems it was a good time to replace it and use the heating elements for the vacuum machine. So now busy with making the thing out of MDF, cutting parts on the CNC and assemble it. If successful, I'll post the pictures. If not, I crawl away in shame.;)

    Unfortunately, I had no time yet to test the probe. The vacuum thing has priority at the moment to start making some stuff for our garden. But, don't worry, it will happen soon enough (maybe if the MDF dust gets too much on my nerves I'll do it in between this job).

    A rough design in SK
    Screen Shot 2015-04-07 at 09.47.00.png

    If it works out as expected, I'll will design something that makes use of OB stuff and profiles.
     
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  29. Paruk

    Paruk Journeyman
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    So, got the probe installed and it works. Have some problems with the software, i.e. it stops at some point in the probing process and retracts to its upper limit. But that will work out somehow. No video, it's not very interesting to see the probing at a speed of 30mm/min.:) Also I have to look if the probing can done a bit faster than that.
     
  30. Paruk

    Paruk Journeyman
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    The vacuum table is ready, but I made it too big!:banghead: at least for the imminent projects I had in mind. So the pulls gave a lot of wrinkles, undesirable. I quickly put together a smaller table and have to make a reduction bulkhead in the oven to heat the smaller frame. A first test pull on this smaller frame worked very well!:thumbsup: Although not yet perfect. Shouldn't take long now before I can make a serious short video about it and show the results here.
     
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