How to see imperfections in a workpiece

Discussion in 'Fiberglass and Composite Boat Building' started by aaronhl, May 13, 2020.

  1. waikikin
    Joined: Jan 2006
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    Location: Australia

    waikikin Senior Member

    I've in past used the grey sanding primer with the black gloss over the top to "prove" the surface as fair, where some correction required & cut through to the grey it would buff up to a suitable gloss, once the surface waxed really made no difference to mold off. Great that you're into the Duratech products as made for the job and save so much time & good.

    Jeff.
     
  2. waikikin
    Joined: Jan 2006
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    Likes: 137, Points: 73, Legacy Rep: 871
    Location: Australia

    waikikin Senior Member

    :);), those people can be very useful in that role, actually great to have someone as a "spotter" when spraying, they can help with the hose etc as well....
     

  3. wet feet
    Joined: Nov 2004
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    Location: East Anglia,England

    wet feet Senior Member

    Do keep in mind that gloss isn't essential for pulling a mould off a plug.There are lots of buildings that feature moulded GRP beams and columns that imitate the hand hewn look and in the boat arena non-slip deck textures are quite common.It may be worth considering whether to persevere with polishing the last 1% of the depth of any orange peel out as it requires the removal of a large volume of material relative to the volume of the blemish.Once the mould is off,it takes very little effort with moderately abrasive rubbing compound to remove the tiny pimples.You won't polish fairness into a mould though.
     
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