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  1. #1
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    What is the smoothest you could make a wood surface?

    I know the conventional methods, but beyond fine sandpaper/steel wool, how can you make a piece of pine smoother than glass?

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    Third World Layabout crtreedude's Avatar
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    Scrapping is a time honored manner. Of course some kind of filler before painting is good too.

  3. #3
    Burning Matches. ElJamoquio's Avatar
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    Do transparent surfaces count (i.e., polyurethanes, etc)?
    Reacting is mind candy; it requires no thought. Thinking is tedious.

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    Quote Originally Posted by ElJamoquio View Post
    Do transparent surfaces count (i.e., polyurethanes, etc)?
    I plan to clear coat but i am talking prep.

  5. #5
    Senior Member BillK's Avatar
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    Quote Originally Posted by Portis View Post
    I plan to clear coat but i am talking prep.
    Some woodworkers use hand scrapers to get an extremely smooth surface.

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    Senior Member aRoudy1's Avatar
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    I do the final sanding with #600 emery cloth.

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    Use Walnut in your pinewood car it will be smoother. Didnt you learn that from Cal Rat in your younger days?

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    Quote Originally Posted by fat sam View Post
    Use Walnut in your pinewood car it will be smoother. Didnt you learn that from Cal Rat in your younger days?
    That's illegal, sweeney. We got rules down here.

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    Double Secret Probation R900's Avatar
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    Very sharp hand plane, and adjusted correctly for a very light cut. Pine is a little tricky with all the resin, but experimenting with high and low angles, I'm sure you could get an outstanding surface.
    Time to Ride...

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    Only cheatin if you get caught, and rubbin is racin.

  11. #11
    riding once again jschen's Avatar
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    Quote Originally Posted by Portis View Post
    I know the conventional methods,
    So how about something unconventional?

    Electrolyze water and collect the hydrogen and oxygen gas. Burn the wood with just enough oxygen gas to get mostly carbon monoxide. Combine with the hydrogen you had collected, and you get "synthesis gas", the source of a lot of commodity organic molecules. Make some plastic and work with that instead. Highly involved, but effective, and I doubt the rule book specifically excludes this approach.
    If you notice this notice then you will notice that this notice is not worth noticing.

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    long time visiter Alfster's Avatar
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    If you want a smooth board without finishing then you're pretty much stuck with fine grit sanding. However if you want to use finishes then I would recommend applying an oil finish & then finishing it off with layers of woodworking paste wax, each time sand with a fine grit or fine steel wool between coats (you should be removing most of the wax each time). The last coat is buffed to a polish. That is the best method I've come across for a smooth finish. I use Minwax ... but I don't use their basic use instructions.

  13. #13
    long time visiter Alfster's Avatar
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    Quote Originally Posted by jschen View Post
    So how about something unconventional?

    Electrolyze water and collect the hydrogen and oxygen gas. Burn the wood with just enough oxygen gas to get mostly carbon monoxide. Combine with the hydrogen you had collected, and you get "synthesis gas", the source of a lot of commodity organic molecules. Make some plastic and work with that instead. Highly involved, but effective, and I doubt the rule book specifically excludes this approach.
    Uhmmm. Shouldn't this come with a disclaimer "kids, don't try this at home"

  14. #14
    riding once again jschen's Avatar
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    Yes, kids, don't try this at home. Adults, you shouldn't try it at home, either. Save it for an appropriate laboratory. As they say in racing, speed costs money.
    If you notice this notice then you will notice that this notice is not worth noticing.

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    Banned. ModoVincere's Avatar
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    Quote Originally Posted by jschen View Post
    So how about something unconventional?

    Electrolyze water and collect the hydrogen and oxygen gas. Burn the wood with just enough oxygen gas to get mostly carbon monoxide. Combine with the hydrogen you had collected, and you get "synthesis gas", the source of a lot of commodity organic molecules. Make some plastic and work with that instead. Highly involved, but effective, and I doubt the rule book specifically excludes this approach.
    cheater

  16. #16
    Non Tribuo Anus Rodentum and off to the next adventure (RIP) Stacey's Avatar
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    General shape is ultimately more important to aerodynamics than surface finish.

  17. #17
    Seņor Member USAZorro's Avatar
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    Quote Originally Posted by Portis View Post
    That's illegal, sweeney. We got rules down here.
    Speaking of rules... shouldn't Portis Jr. be asking us this?
    The search for inner peace continues...

  18. #18
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    Quote Originally Posted by Stacey View Post
    General shape is ultimately more important to aerodynamics than surface finish.
    Yup, deal with form drag and interference drag first, then worry about skin friction.

  19. #19
    Support JDRF b_young's Avatar
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    Many coats and a fine sanding in between is the key to a glass like finish. And after the last coat of paint or polyurethane, use rubbing compound like you use on your car.

    Is this for a pine derby?
    "Yesterday is history, tomorrow is a mystery, but today is a gift that is why it is called the present." - Kung Fu Panda

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  20. #20
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    Urethane that has been polished with a buffing wheel. I'd concentrate on the wheels though. I was a fan of using shaved graphite as a lubricant. I also would sand the inside of the wheels to lower their weight (lowered rotational inertia).

  21. #21
    Burning Matches. ElJamoquio's Avatar
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    Quote Originally Posted by lyeinyoureye View Post
    Yup, deal with form drag and interference drag first, then worry about skin friction.
    Completely correct. Skin friction is almost nil.
    Reacting is mind candy; it requires no thought. Thinking is tedious.

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  22. #22
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    Don't you already know how to polish your wood? Most boys learn it by the time they are out of middle school.

  23. #23
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    wood mirrors don't work as well as you think they will.
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  24. #24
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    Another trick is to soak the wood in water between sanding... it causes it to swell and contract. Although, I think this applies more to the cutting board I made based on the fact it would be long term use, and get wet often.

  25. #25
    Senior Member ajay677's Avatar
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    Rottenstone.

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