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Black Rabbit 1500

Discussion in 'CNC Mills/Routers' started by Dexter Oddwick, Sep 1, 2016.

  1. Dexter Oddwick

    Dexter Oddwick Well-Known
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    Dexter Oddwick published a new build:

    Read more about this build...
     
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  2. Mark Carew

    Mark Carew OpenBuilds Team
    Staff Member Moderator Resident Builder Project Maker Builder

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    Great Build @Dexter Oddwick so many cool ideas incorporated into this machine :thumbsup:
    Thank you for sharing.
     
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  3. Dexter Oddwick

    Dexter Oddwick Well-Known
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    Thanks Mark, it all begins with Openbuilds. Here soon(ish) I will do another for the EBU!
     
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  4. Giarc

    Giarc Master
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    Beautiful build!
     
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  5. semperfikurt

    semperfikurt Journeyman
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    Beautiful. Just freaking beautiful!
     
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  6. Julius

    Julius Veteran
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    after all that, and you still dont have a C Beam Z axis ;)
     
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  7. dean knipping

    dean knipping Journeyman
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    DDDDAAAAMMMMNNNN!!!!!
     
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  8. Joe Santarsiero

    Joe Santarsiero OB addict
    Staff Member Moderator Builder

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    That's a lot of drilling and tapping!
    Everything looks great though.
     
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  9. Dexter Oddwick

    Dexter Oddwick Well-Known
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    @Joe Santarsiero Its not as bad as it looks, although on the X axis, it is a single piece of 8040 extrusion with a piece of 2040 for the stabilizer and they are held on by 20 M5 x 40mm hex cap screws, which tapping that deep into Misumi extrusions (they don't have the debris channels like 80/20 extrusions) is a time consuming process! Taping the plates is not bad though; I just grab my tap and go through the holes while I'm cutting the next piece!
     
    #9 Dexter Oddwick, Sep 3, 2016
    Last edited: Sep 5, 2016
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  10. Dexter Oddwick

    Dexter Oddwick Well-Known
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    @JustinTime Those 6mm belts are great for 3d printers, but have too much flex over long distances to really be practical for a heavy router. In comparison, that 15mm belt is like a tank tread! They are not expensive relatively speaking ($60 for 5 pulleys and 5M of belt shipped free), but I can only find them from China on Ebay which takes about 3 weeks to get here.
     
    #10 Dexter Oddwick, Sep 3, 2016
    Last edited: Sep 5, 2016
  11. Dexter Oddwick

    Dexter Oddwick Well-Known
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    @Julius I LOVE Vslot for "clean" bots (printers, drawbots, etc.) but not a huge fan of it for "dirty" bots. On my 1500, i will keep the vslot Z because the worst thing that I will cut with it is hardwoods and acrylic, but for my 750 I will eventually go with dual 16mm fully supported rods as soon as my budget allows. I have found that when cutting metals (I use it ALOT for aluminum and brass) that vslot is very unforgiving of debris and deforms very easily when brass or aluminum gets into the slots.

    That is also another reason that I went with open rail for the X & Y, so that if anything does happen and it gets damaged, it can be easily replaced without buying all new extrusions! This router was designed to be a tank built on a bicycle budget and believe it or not, (I will have to double check my receipts to be sure) but that 1500 came in at around $700, motors, hardware, and electronics included!
     
  12. Lstj

    Lstj New
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    this spindle makita?
     
  13. Dexter Oddwick

    Dexter Oddwick Well-Known
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    @Lstj No, its just a $25 harbor freight trim router. The one on my 750 has been in service for about 3 years now without a single problem and all I have had to do is change out the brushes once about a year ago! Actually, it is the same router that cut all of the parts for both of these machines.
     
  14. Ankur Bohra

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    SIr,
    Your machine can be very useful to the startups like us. I had just one querry that Does this machine performs jobs on aluminium.??
    Please send me the part list
     
  15. Florian Bauereisen

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    Hi
    very nice build indeed . I especially like the doubling of the side plates - a weak point in most cnc`s
    Just a few suggestions:
    -you could have sealed your mdf torsion box right when gluing together and ,if i was you, i would have made (at the very least) the first and last member of the torsion box from some material a bit more dimensionally stronger than mdf.

    -Think about going belt on belt (rack and pinion) for better accuracy.

    -for less hazzle, why not use a single 25mm square rail and wagon on x (at least). trying to get 4 rails precisely facing each other might turn into a nightmare and considering cost... 4 rails and multible wheels/bearings do not come for free either i guess. Using a single 20 or 25mm sized rail, a single (long) wagon would be sufficient and is aprox 120 Euro over here (incl 1,0m rail) . It would take hundreds of kg thrown at it so no need to worry about strength.

    -z has been mentioned before.

    great work, keep at it

    greets

    flo
     
  16. ChadRat6458

    ChadRat6458 Journeyman
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    I like the mdf frame. I went to build my frame. I am short some aluminum extrusion. Instead of ordering more extrusion, I think I will go with oak. I think I have enough in the shop to make a great frame. Thanks for the idea.
     

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