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Thread: Sanding the end grain

  1. #11
    Guest
    Hey guys,
    I have an LP-1m kit and when received it had tiny cracks on the side of the guitar. Now, over the last 2 months, it these cracks have gotten a lot bigger, especially in the past week but have only noticed it today.
    Does anyone have any advice on how to fix this, I am using nitro as a finish and sealer before hand so would the sealer fix them?

    I don't know how to upload photos so if anyone has advice, could you let me know?

    Thanks

  2. #12
    Member Scott J.'s Avatar
    Join Date
    Jul 2013
    Location
    Sydney, NSW
    Posts
    390
    Hi LPBuild1 ... whereabouts are you located? if it's in an area where you get big humidity changes (e.g. the tropics or near them) you'll find that unsealed timber will reflect the humidity changes ... small cracks and checks will open and close as the humidity drops and raises ... this is particularly more a problem for faster, kiln dried timbers rather than ones that have been sitting seasoning naturally for several years.

    If this is the cause then you might be able to "close them up" by re-humidifying the timber before stabilising (i.e. sealing it with a finish) - might work and well worth trying

    ... otherwise its filler and sanding smooth - which is the easier and quicker option and to be honest shouldn't be problem if you're going to be using nitro as the filler wont show through the solid-colour of nitro like it would through the transparency of Wudtone.

    ... however, considering his experience with these particular bodies, DB should have some sagacious advice on dealing with Basswood and its characteristics.


    Wait a minute ... that sounds like Rock and/or Roll!

    SG-1 ... "Little Miss" finished in Flamenco Cherry Wudtone
    TL-1A ... "Slugger" finished in Antique White Nitro
    EX-1 ... "Metal God" finished in nickel-plate (work in progress)
    ST-1A ... "Scrapper" stained and finished in linseed oil ... and with the "secret weapon"
    GR-1SF ... "Rocker-billy" (just arrived, work in progress)

  3. #13
    Member Scott J.'s Avatar
    Join Date
    Jul 2013
    Location
    Sydney, NSW
    Posts
    390
    Oh ... P.S. to post photos, don't use the "submit quick reply" button on the bottom left, but use the Reply link on the bottom right (in the blue box with Subscribe and RSS feed) ... it'll take you to new page with all the "smiley options" and three address boxes to upload photos from.

    Cheers.


    Wait a minute ... that sounds like Rock and/or Roll!

    SG-1 ... "Little Miss" finished in Flamenco Cherry Wudtone
    TL-1A ... "Slugger" finished in Antique White Nitro
    EX-1 ... "Metal God" finished in nickel-plate (work in progress)
    ST-1A ... "Scrapper" stained and finished in linseed oil ... and with the "secret weapon"
    GR-1SF ... "Rocker-billy" (just arrived, work in progress)

  4. #14
    Guest
    ok coo thanks, im just to let you know its a mahogany body so that would make sense. I live in sydney but humidity has bren up and down a lot in the past week.
    i will add some photos this arvo
    where eould i buy cheap grain filler for mahogany? Thanks a loy for saving me

  5. #15
    Guest
    here they are



  6. #16
    Moderator dingobass's Avatar
    Join Date
    Sep 2012
    Location
    Perth
    Posts
    4,491
    Hey LP, those are classic humidity cracks...
    As you plan on finishing the body wit Nitro, I would get some thin super glue and flood the cracks.
    This will bond the timber and should stabilise the cracks.
    Then use Timbermate filler, sand smooth and apply your finish.

    There is always a workaround for glitches, mistakes and other Guitar building gremlins.....

  7. #17
    Guest
    Ok cool thanks for the help DB, much appreciated

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