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Thread: OK, So Laugh With Me...

  1. #1
    Join Date
    May 2007
    Location
    Thomasville, GA
    Posts
    5,998

    OK, So Laugh With Me...

    You know what they say about assuming!

    I've continued doing some testing on my CNC in between learning about different software. For instance, I downloaded VCarve Desktop Trial version a few days ago and was trying to run one of their trial projects. Prior to this, I had done a couple of small v-carve items to try different bits, but the project I tried today is a detailed box top. It had been running for about five minutes and suddenly the spindle collet and bit spun out of the spindle! There had been some noises from the bit and I attributed it to some of the details being climb-cut since the bit has to go both directions. But.....

    Then, I finally engaged my brain! Why would the spindle collet nut come loose in the first place? I've used routers of various types for decades and never gave a thought to such a thing happening. Then, it hit me! This is a DC spindle!!! I had wired it according to all the proper conventions, so I "assumed" all was well with the world. Well, ahem! When I watched the spindle spin down, sure enough it was going the wrong direction! The correction, of course, was simply to flip the positive and negative leads feeding the spindle. Life got back on track! I re-started the VCarve project and it sounded much happier!

    Another thing I decided to run is the X- and Y-axis motor belt clips I did a while back to handle 9mm wide belts. Well, I'll let the photo below tell the tale:

    Click image for larger version. 

Name:	SpindleDirCcw_01.jpg 
Views:	31 
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ID:	90402

    The two clips on the left are from my original run. On the right are the clips I ran today.

    Ah, well.....live and learn.
    Bill Arnold
    Citizen of Texas residing in Georgia.
    NRA Life Member and Member of Mensa
    My Weather Underground station

  2. #2
    Join Date
    Jun 2008
    Location
    GTA Ontario Canada
    Posts
    12,262
    Well Bill u done good spotting it. Day and night difference. All we can do is laugh these experiences off eh. Now u going to see a big difference in your carvings. Wonder how many others have done the same out there.

    Sent from my SGH-I337M using Tapatalk
    cheers

  3. #3
    Join Date
    Feb 2008
    Location
    East Freeetown, Massachusetts
    Posts
    3,022
    NAH - I ain't gonna laugh at you.

    Some day try running a spindle in the wrong direction then plunge fast into cutting some steel.

    I have actually TWISTED, a solid carbide reamer. NOT an exaggeration and not just a little. And THEY said it can't be done.

    No - I am NOT going to laugh at you.

    (snicker snicker)

  4. #4
    Join Date
    Oct 2006
    Location
    ABQ NM
    Posts
    30,020
    Quote Originally Posted by Bill Arnold View Post
    ...Another thing I decided to run is the X- and Y-axis motor belt clips I did a while back to handle 9mm wide belts. Well, I'll let the photo below tell the tale:

    Click image for larger version. 

Name:	SpindleDirCcw_01.jpg 
Views:	31 
Size:	54.6 KB 
ID:	90402

    The two clips on the left are from my original run. On the right are the clips I ran today.

    Ah, well.....live and learn.
    Sure is a difference between cutting plastic and melting it, huh?
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
    When the weird get going, they start their own forum. - Vaughn McMillan

    workingwoods.com

  5. #5
    Join Date
    May 2007
    Location
    Kansas City, Missouri
    Posts
    13,460
    I've not ran into that myself, but feel I'd make the same mistake, nice catch on seeing it happen. Amazing how much cleaner the cut is.
    Darren

    To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault

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