Plugging holes in stringers
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Plugging holes in stringers

  1. #1
    Senior Member Flat Fan's Avatar
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    Default Plugging holes in stringers

    I have about 6-8 holes from bolts that I'm not using in the stringers. I want to plug them with dowels, what material do I use.
    Thanks

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  3. #2
    Impeachment! 75 TX's Avatar
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    I've always used plain old wood dowels from Homer Depot. Drill out the holes to a uniform size, blow out any dust, dip the pre-cut dowel pieces in resin and twist as you slide 'em in. If you want you can use a small paint brush to coat the inside of the holes prior to inserting the dowels. When I plug holes I like to leave the dowels a little short on each side. This allows me to mix some colloidal silica or cabosil to thicken a bit of resin for use as a filler. By doing so you encapsulate the wood dowels and keep them from absorbing water and swelling/rotting.

  4. #3
    senior member turbo wog's Avatar
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    i ground around the hole like i was gonna glass a crack (to the wood)& drilled the hole out & i used elmers wood glue. also made sure i ground the dowl to set perfect / reground a little bit to make a smooth surface ,nice taper & reglassed a few layer untill it was just past flush then sanded flat. might have some pocs in my thread "turbo wogs project"

    the reason i used elmers glue is that i was always told it is such a strong bond it will split away next to the glue area but not there exactly. (stronger than wood itself). & resin delaminates on the stringer so how good will it hold if the stringer flexes real hard, will it fracture? i might be over thinking this but thats what i did. hope it helps
    Last edited by turbo wog; 05-30-2013 at 11:47 PM.

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