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  1. #1

    Sanding Bottom of board?

    so... as I mentioned in another thread, I picked up a used epoxy board over the winter. its in pretty good shape but it needed some work. I repaired all the minor dings and everything is smooth and water tight.
    But, I remember reading some talk in previous threads over the years about sanding the bottom of the board, nose to tail with fine grain sandpaper. some mentioning that it could help reduce friction/ better speed???
    any reason to not do this?
    thanks for any input before I give it sanding...

  2. #2
    I would wax the bottom with sticky bumps punt wax. Make sure to have mounds and flat spots. You want the surface to look like a golf ball. Wax in x's not circles. I also like to install a few large sponges down there between the fins. For feel. Good luck.

  3. #3
    Quote Originally Posted by leethestud View Post
    I would wax the bottom with sticky bumps punt wax. Make sure to have mounds and flat spots. You want the surface to look like a golf ball. Wax in x's not circles. I also like to install a few large sponges down there between the fins. For feel. Good luck.
    Lol. I deserved that.... could you send me a sticker of your andy irons pictures?

  4. #4
    Quote Originally Posted by MFitz73 View Post
    Lol. I deserved that.... could you send me a sticker of your andy irons pictures?
    A sticker. Great idea. That way he will get some love when you make that cover shot in next month's surfer mag.

  5. #5
    Quote Originally Posted by leethestud View Post
    A sticker. Great idea. That way he will get some love when you make that cover shot in next month's surfer mag.
    are you really going to put a pic of AI on your board???

    oh... you mean on my board. lol.

    dude, I think it would be safe to say that even AI himself would say your avatar pic is a bit on the light in the loafers side... not that I'd know.
    Last edited by MFitz73; Jul 15, 2013 at 03:32 PM. Reason: misread...

  6. #6
    Quote Originally Posted by MFitz73 View Post
    so... as I mentioned in another thread, I picked up a used epoxy board over the winter. its in pretty good shape but it needed some work. I repaired all the minor dings and everything is smooth and water tight.
    But, I remember reading some talk in previous threads over the years about sanding the bottom of the board, nose to tail with fine grain sandpaper. some mentioning that it could help reduce friction/ better speed???
    any reason to not do this?
    thanks for any input before I give it sanding...
    I sanded both the top and bottom of my tuflite epoxy. It had a factory gloss coat that wax would not stick to. The board was also slow as hell and I felt the sanding the bottom could only help (there's a theory that the microscopic groves on sanded boards reduce the amount of suction/drag created by a smooth surface...same for snowboards). Afterward, the wax stayed on and the board felt slightly faster...win.

  7. #7
    Join Date
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    ^^^^that's the theory. My theory is that shapers got tired of doing gloss coats and invents 'competition glassing' to save time and money

  8. #8
    Join Date
    Jun 2009
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    Yeah, MFitz, you had to expect that one coming, Lee just beat everyone else to it! HA HA Fitz, I found this little article. Don't know if it will help

    Sanded vs. Gloss Finish


    Although there is some disagreement in shaping communities, a sanded board is thought to ride faster than a gloss finished board. The main reason is the gloss finished bottom does not hold any water on it while riding the wave. The water beads right off. This sounds like a good thing, but a sand finished surfboard will actually trap some water along its bottom surface allowing a film of water to slide along water. This trapped film of water will reduce friction and make the board slick and lively.

    When asked about this theory, Erik Nordskog, founder of On It Pro, offered his own insight.

    "In the high performance boating industry, we found that a sanded finish works better on a displacement hull (v bottoms) since there's more hull pushing through the water," explains Nordskog. "On a hydro plane, a gloss finish works much better! This is what a surfboard is more like! A sanded finish on a hydro plane hull actually will trap air with the water which slows the boat down. A gloss finish is the only way to go."

  9. #9
    Join Date
    Jun 2009
    Location
    Delaware
    Posts
    1,021
    read some more...... Had my kind of chuckling

    Nordskog's company makes a product called Extreme Cream, designed to lower the friction of your board on water. Erik mentioned the fact that although sand finished boards will make some boards surf faster, they have drawbacks.

    “The idea of sand finish is the water molecules collect in the pores, giving you water over water. That’s fast. You have slick over slick. Our product is actually more slippery than water. A sand finish will attract dirt and the salt. All the elements attract to it, it’s just filthy and hard to clean. There’s no need for a sand finish anymore.”

    We were intrigued, so we asked why this substance won’t simply rub off once in the water.

    “People have used a lot of different things over the years, like car wax. It might look good but it creates friction. Any other kind of material comes right off immediately. Nothing sticks and stays. When you have a polymer it instantly starts to bond with the poly surface or the epoxy surface very well.

  10. #10
    Quote Originally Posted by MFitz73 View Post
    \
    oh... you mean on my board. lol.

    dude, I think it would be safe to say that even AI himself would say your avatar pic is a bit on the light in the loafers side... not that I'd know.
    Let me know if you still don't like it. You can have it your way.

    And dude, it ain't the surfboard slowing you down.
    Last edited by leethestud; Jul 15, 2013 at 05:05 PM.