Applying fairing compound to frames before planking

Discussion in 'Wooden Boat Building and Restoration' started by lftmx3, Jun 10, 2015.

  1. lftmx3
    Joined: Apr 2015
    Posts: 2
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: louisville

    lftmx3 New Member

    I have a few slight (@1/32-1/16") low spots when i put a straight edge on the bottom. Being a racing runabout I know its important to be very flat. Is it permissible to add compound on the lows in just a few areas? Seems like there would still be plenty of bare wood for the ply/epoxy bond.
  2. keysdisease
    Joined: Mar 2006
    Posts: 794
    Likes: 43, Points: 28, Legacy Rep: 324
    Location: South Florida USA

    keysdisease Senior Member

    I would use thickened epoxy, not fairing compound. Fairing compound may crack and break out under load, I would think you want to use something structural and not cosmetic

  3. gonzo
    Joined: Aug 2002
    Posts: 15,773
    Likes: 1,198, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    You could used thickened epoxy and let the plywood float when you glue it.
  4. PAR
    Joined: Nov 2003
    Posts: 19,133
    Likes: 490, Points: 93, Legacy Rep: 3967
    Location: Eustis, FL

    PAR Yacht Designer/Builder

    Scab in a piece of the same species of framing material and plane/hone it down to the desired dimensions.
  5. michael pierzga
    Joined: Dec 2008
    Posts: 4,862
    Likes: 115, Points: 0, Legacy Rep: 1180
    Location: spain

    michael pierzga Senior Member

    Yah...use the same material as the frame for filling substantian gaps.

    If the gap is small high density filler will work fine.

  6. peterjoki
    Joined: Sep 2008
    Posts: 57
    Likes: 4, Points: 8, Legacy Rep: 14
    Location: Turku, Finland

    peterjoki Junior Member

    As Gonzo wrote.

    Or glue thin strips/veneers of wood to the frames, and fair again. I prefer this approach as it is 100% certain to eliminate any chance of a poor glue up.
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.