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Thread: Sanding problem.

  1. #1

    Sanding problem.

    I have found that I have a problem with my sand paper leaving gray streaks on my light wood pens. The problem doesn't appear until i get into the higher grit paper. Example:

    Turn blank with gouge, go over it with skew.
    Sand 150
    Sand 340
    Sand 400
    Sand 600
    (All of those papers are the J weight paper on the spindle you get from WoodCraft)

    Then I get to my high grits that I also got at WoodCraft. They are circular and I have cut them in half to extend their life.

    When I use these they tend to leave a gray (the color of the paper) residue on my pens that I have a VERY hard time getting off unless I go back down to 150grit and start again. By that time I'm irritable to say the least.

    I know it's operator error, I just need you guys to tell me what that error is.

    Thanks in advance.

  2. #2
    Join Date
    Oct 2006
    Location
    ABQ NM
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    30,017
    Drew, I've not used that particular sandpaper, so I'm guessing here, but I've had cases where I saw similar streaks on light wood pens, and it turned out I was hitting the steel bushings with the sandpaper, and getting steel dust in the pores of the wood. I've had pretty good success removing the streaks by wiping the pen with denatured alcohol after each sandpaper grit, but it's best if I just make it a point to stay off the bushings as much as possible.
    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

  3. #3
    Join Date
    Dec 2007
    Location
    Tellico Plains, Tennessee
    Posts
    4,351
    It would be my opinion - for what it might be worth - also that you're getting into the bushings... I've had problem and as Vaugh said, wipe with DNA or Acetone or Mineral spirits between grits and let it flash off... will add a little time to your sanding, but not too much. Try to avoid the bushing as best you can will eliminate most of it.
    Chuck
    Tellico Plains, TN
    https://www.etsy.com/shop/TellicoTurnings
    My parents taught me to respect my elders, but it's getting harder and harder to find any.
    If you go looking for trouble, it will usually find you.

  4. #4

    Bushings.

    You know...now that I think about it, you're probably right (both of you)
    I feel like a moron.
    Husband and Daddy is my primary job, the other thing I do is for money.
    www.blackswampwoodturning.webs.com

  5. #5
    Join Date
    Oct 2006
    Location
    ABQ NM
    Posts
    30,017
    Quote Originally Posted by Drew Croy View Post
    You know...now that I think about it, you're probably right (both of you)
    I feel like a moron.
    No worries, you're in good company. I think we've all done it at one time or another. So who you callin' "moron"?

    I've found that if I try to sand from the center of the barrel towards the ends, I don't pick up as much bushing dust as I do if I start at one end and move the paper across the barrel.
    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

  6. #6
    Join Date
    Nov 2006
    Location
    Mountain Home, Arkansas
    Posts
    11,832
    Go to the tutorial section and look for 'no mandrel' turning.
    Suggest you turn your blank down to almost to the bushings, then switch to no mandrel for the rest and for sanding.
    "Folks is funny critters."

    Think for yourselves and let others enjoy the privilege to do so, too. ~Voltaire

  7. #7
    Join Date
    Feb 2007
    Location
    Atlanta, GA
    Posts
    194
    I've found that the heat from too much pressure and/or too high a turning speed causes similar problems.

  8. #8
    Join Date
    Dec 2006
    Location
    Goodland, Kansas
    Posts
    4,834
    Join the crowd Drew. It took me a while to figure it out but I agree it is probably being stained with filings from the bushings.

    I have never did that before!!!
    Bernie W.

    Retirement: Thats when you return from work one day
    and say, Hi, Honey, Im home forever.

    To succeed in life, you need three things: a wishbone, a backbone and a funnybone.

  9. #9
    Join Date
    Aug 2008
    Location
    Reno, Nv
    Posts
    3,632
    I have some MM pads from CSUSA that do the same thing . They too are gray and do the same thing. DNA works, as mentioned. Johnny CNC sells Delrin bushings that can help with the sanding problem
    Your Respiratory Therapist wears Combat boots

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