Tuesday, August 16, 2011

Am I done yet?

Um... NO!  Not even close.  I ordered another 12 yards of 1708 biax cloth (from ebay) for the final layer yesterday.  It should be here sometime late this week, so in the meantime I decided to start cleaning up the existing layers of glass so that the third layer lays flat and will minimize the amount of fairing at the end.  I started up forward and found that there was a lot of resin lumped up in ridges from where I put the plastic and sandbags when I did the lamination.  It was clear that I wasted a lot of epoxy here and consequently, I needed to do a bunch of sanding.  I only had 15 - 60 grit sanding disks for my 5" DeWalt (my 6" Rigid is still in for repairs) so I was only able to adequately sand about 3 feet from the bow before I ran out of disks.

Since there were a fair amount of imperfections in the form of little valleys caused by laying down the plastic and sandbags when the layup was done, I vacuumed everything up and wiped it down with acetone and the mixed up a 12 oz batch of epoxy and thickened with a 50-50 mix of Aerosil and glass microspheres.  This mix should provide much better sandability (is that a word?) to the job once it cures.  I troweled it out on the prepped area and spread a thin layer over everything to fill in the bumps and valleys and called it a day.

Hopefully the 6" Rigid will be fixed soon (especially since I have over $100 in sandpaper sitting on my bench), but in the meantime I will need to purchase large quantities of 5" 60 grit disks.  The glass job gets better as I go aft (on the job training, I can see my improvements), but there are still a few resin ridges here and there.  As much as I despise it, it might make sense to break out the angle grinder for the really high spots so I don't spend a fortune on sandpaper.

Just keep on movin on...

Bad picture, but the white section is actually fairly flat.  Flat enough for the third section of glass anyway.

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