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Thread: FireWorks 2011 the MiniRose

  1. #11
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    Default Re: FireWorks 2011 the MiniRose

    Finally got the etch a sketch working.
    Ok my CNC mill I have sometimes mentioned.
    Took a few tries, but you are only beaten if you stop trying.

    Progress from left to right
    first sheet the horizontal ones, 90 and 45 degree bits, not good.
    Second sheet, two vertical sets, 60 degree bit, lots of burrs
    Third sheet, one set, 20 degree bit, some burs but salvageable with a razor blade
    Last sheet one vertical set, a new 20 degree bit...SWEET no burrs and no clean up
    MiniRose2011_MRB1.JPG


    Close up of the last 3 you can see all the burs on the first one.
    The second one was done with a 20 degree tip, turns out about 1/64 was broke off the end.
    Last one tried a new bit. No burrs, and next to no cleanup.
    The holes are #64 .0360" .90mm
    I checked the trace size with my carbide drills as a gauge and I would say those lines are only #80 .0135" or .35mm. Thats SOIC size
    Both of the last two boards were done with the same milling program, thats how much difference a broken bit makes.
    MiniRose2011_MRB2.JPG


    And here is what they are going to be used for.
    Blocks to plug all those LEDs into, a simple project, but you have to start somewhere.
    MiniRose2011_MRB3.JPG


    JOel 527
    Last edited by jrock64; 05-06-2011 at 01:25 AM.
    Lets get serious, I have over 10,000 channels on my back, just where do you want to start counting.

  2. #12
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    Default Re: FireWorks 2011 the MiniRose

    Looking good. I just purchased some different size bits - got some 20, 45 and 60, I think.

    A little sandpaper should get rid of the burrs, don't you think?

    What are you using to generate your g-code for the CNC? And did you start with a specific PCB layout SW?

    I've got a small desktop CNC machine that I'm playing with for small wood work, but plan to do some PCB board stuff soon...
    Mark

  3. #13
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    Default Re: FireWorks 2011 the MiniRose

    I loved the welding jig. I still have to learn that spending time making jigs for stuff is the SAME as spending time making stuff!
    -Mike
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  4. #14
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    Default Re: FireWorks 2011 the MiniRose

    I find that quite often I spend an hour or two making a jig so I can save 10 minutes. I feel so much better knowing I did it right.

    Yes that was sarcastic but true. :smile:
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  5. #15
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    Default Re: FireWorks 2011 the MiniRose

    When I mill circuit boards, I typically only use a 60į bit and route progressively, increasing the separation by half the bit width.

    Your third attempt looks like what I had been getting for the last six months. I thought I had gotten a bunch of bits that werenít sharpened correctly. Then one day I just happened to be watching as the spindle stopped from its 30,000 RPM rotation speed. It works much better, now that itís turning the correct direction. :-D
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  6. #16
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    Default Re: FireWorks 2011 the MiniRose

    Looking good. I just purchased some different size bits - got some 20, 45 and 60, I think.
    what ever works for you. I was about to go to mill ends if I had not got it to work.

    A little sandpaper should get rid of the burrs, don't you think?
    not even close. took the new edge on one of those snap blades to cut 2oz copper

    What are you using to generate your g-code for the CNC? And did you start with a specific PCB layout SW?
    I am using Eagle free version, limited to 3" by 4"
    Using the gcode plug in to create the cnc files.
    running those thru opti to clean up the tool paths.
    Transferring that to a bootable memory stick that runs turbocnc

    I've got a small desktop CNC machine that I'm playing with for small wood work, but plan to do some PCB board stuff soon...
    Looks like the site is mostly down, but here is a pretty good picture of what mine looks like
    main.jpg

    I loved the welding jig. I still have to learn that spending time making jigs for stuff is the SAME as spending time making stuff

    I find that quite often I spend an hour or two making a jig so I can save 10 minutes. I feel so much better knowing I did it right.
    It may take longer to make the jig, but at least you feel productive while making the jig.
    If I had tried to clamp the parts in place I would have just been frustrated.
    When you deed to drill 50 holes and they all need to be within 1/16 of an inch a center punch just is not accurate enough

    When I mill circuit boards, I typically only use a 60į bit and route progressively, increasing the separation by half the bit width.
    I tried, but the tool path was too wide for me. I wanted to see what the smallest path I could achieve was.

    Your third attempt looks like what I had been getting for the last six months. I thought I had gotten a bunch of bits that werenít sharpened correctly. Then one day I just happened to be watching as the spindle stopped from its 30,000 RPM rotation speed. It works much better, now that itís turning the correct direction. :D
    I don't think there is a backwards to a D bit.
    But if I could run my bits backwards. I could use both edges and get twice the life out of them.:D

    Joel 628

    If the mods want to start a new milling forum, they can move these posts there
    Lets get serious, I have over 10,000 channels on my back, just where do you want to start counting.

  7. #17
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    Default Re: FireWorks 2011 the MiniRose

    Ernie and Joel,
    What kind of spindle are you using? I have both a Dremel and a Bosch Colt router that I started with. Some folks on other forums mentioned a special spindle just for PCB work...not sure I'm ready to make that investment...
    Mark

  8. #18
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    Default Re: FireWorks 2011 the MiniRose

    just a trim router http://www.harborfreight.com/1-4-qua...ter-44914.html

    and A25-1250 to reduce from 1/4 to 1/8 http://www.gpcollets.com/adapter_cross.html

    Joel 690
    Lets get serious, I have over 10,000 channels on my back, just where do you want to start counting.

  9. #19
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    Default Re: FireWorks 2011 the MiniRose

    We have a test firing. http://www.youtube.com/watch?v=_ccLEnWsW0Q
    Still working out what will look best, but getting close.

    MiniRose2011_Interface.JPG

    And here is how the interface board that I milled fits between the controller and the strips.
    All the strips just plug in.

    Joel 916
    Lets get serious, I have over 10,000 channels on my back, just where do you want to start counting.

  10. #20
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    Default Re: FireWorks 2011 the MiniRose

    1 blooming rose, and 2 mini roses.


    JOel
    Attached Images Attached Images
    Last edited by jrock64; 07-03-2011 at 11:31 PM. Reason: reformatted, added pix
    Lets get serious, I have over 10,000 channels on my back, just where do you want to start counting.

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