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Storm Damage Page 5
This page was last updated on 25 October 2002

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Rebuilding the Anchor Platform       Repairs to the Foredeck     Installing the New Platform

Repairing, Patching, and Paint Blending--Damaged Bow

After enduring any number of comments throughout the summer, mostly revolving around these two options: "What'd you do to your bow", or "Gee, you ought to scratch up the other side to match and paint big eyes above it--it looks like a smile", I could finally tackle the minor fiberglass repair and Awlgrip touch-up that I'd been wanting to do since that day in May when the damage occurred.  I had decided early on that it was simply too difficult to try and repair it with the boat in the water, so I concentrated on other things after the damage occurred.  After a while, I got used to it and hardly noticed it.  (Yeah, right.)

The first step in the process was to gouge out and smooth the contours of the worst and deepest wounds in the fiberglass.  Fortunately, this was only a small area.  I used a random orbit sander and some 80 grit paper that I was using at the time to sand for my new, raised bottom paint.  A few days later, when I began work in earnest on the bow paint, I worked a little more to sand these areas by hand, and roughed up the entire area surrounding the largest curved paint damage.  I used 220 grit paper because I didn't want to create any scratches that would show up through the Awlgrip.
 

lowerbowchips.JPG (155818 bytes)There are several smaller, less significant chips and scratches in the paint that need touching up too.  However, rather than go crazy with sandpaper and try to smooth out all the areas (the other areas are scratched just through the Awlgrip--there's a small edge, but no gouging of the fiberglass), especially given the relatively unforgiving nature of Awlgrip and the difficulty in patching and blending, I decided that I would pretty much touch up the blue paint here, much as one might do with tough-up paint on a car.  I'm hoping that with great care in application, plus some minor buffing and blending later, this technique will hide the damage from all but a very close-up inspection.

See, Awlgrip is not a product that is intended to be buffed and blended, and attempting to do so tends to make any repairs quite obvious.  Since I really didn't know what kind of results I'd get at all, it seemed to make sense to not damage the surrounding paint further (by sanding), at least until I had a better handle on how this patching was going to go.

tapedoffready.JPG (152607 bytes)In the largest and worst, arc/smile-shaped area, however, I had no choice--I had to sand a bit to smooth it out.  But again, I chose not to sand too far afield when trying to feather the existing paint edges and damaged areas.  I smoothed things out  rather well with the 220 grit, and sanded out a small distance on the undamaged paint, but made no attempts to make the damaged area completely fair with the surrounding hull.

To protect the surrounding hull from damage during the process, I taped off the area in question with some of my silver masking tape.  The plastic set up a distance away is for later use in a certain blending technique if I decide to use a small Preval sprayer to apply the Awlgrip to this area; it will prevent overspray from extending onto the surrounding hull.   More on this later if I choose to go this route.  This tape is really just to protect the hull during the epoxy and remaining sanding operation; when I paint, I'll be doing some different taping to help me blend the area.  Again, you'll see later.
 

Instead, I mixed up a small batch of thickened epoxy (West System with silica and 407 fairing compound) and used a putty knife to help fair the less-damaged places in with the surrounding paint.  This thin "skim coat" of epoxy will make it easier to sand the damaged area smooth.  I also filled in the worst gouges with the epoxy mix, and also a couple of small dings that were too small for significant fairing and damage repair, but needed to be filled before I could touch up the paint.  I left the epoxy to cure before proceeding.  

 After I applied the epoxy, I used a rag to wipe off the tape edge to prevent a ridge of epoxy there that would be hard to sand out and hide later.  You'll see more detail about this particular edge and the steps to make blending it in later.  The deepest gouge extends just around the point of the stem, so I couldn't get the contour perfect on the first fill. 

417filler.JPG (182817 bytes)The next day, I sanded the first coat of filler and prepared for the second, and hopefully final, coat.  Fir this coat, I chose Interlux Epoxy Surfacing Compound (# 117A/118B).  This is a smooth, fine-textured compound that is an excellent choice for final fairing and as a finishing putty.  I mixed up a small batch and applied a thin coat with a putty knife.  I did leave a bit of extra on the stem so that I could sand it down to the proper contour and be done with it this time.  As before, I carefully wiped off the excess along the tape edge to prevent a lip from forming there.
 

smilesanded.JPG (170120 bytes)Once the filler had a chance to cure, I sanded the area smooth, fair and flush with the surrounding hull.  Once I had the bulk of it sanded I removed the masking tape and sanded flush the tiny ridge that had formed there, and out slightly onto the surrounding hull.  I used 320 grit paper except for where it clogged too fast, where I switched to 220 grit for the bulk sanding and then finished with more 320 grit.  The patch is now ready for  Awl-Quik epoxy primer.
 

Im003960.jpg (167598 bytes)After an unsettled, showery Saturday, Sunday dawned clear and sunny, so I went ahead and mixed up a small amount of primer.  I applied several coats over the course of the day, particularly on the areas that I had sanded and filled.  I also dabbed some on the smaller scratches to help the final coat blend in all the easier.

It's amazing to me how long this silly project ended up taking.  This always seems to be the way when working against a deadline--weather, in this case.  The more you try to rush a project to completion, the less likely things are to turn out really well.  After sanding the primer, I prepared to apply my topcoats and finish off the repair.  Blending Awlgrip is a challenge--you simply can't wetsand and buff it out the way you can with gelcoat.  I suppose this is one disadvantage of the product (minor, in my book).

To get around this (I hoped), I planned to overspray the damaged area.  What this means is that I installed plastic and masking tape a bit away from the actual sanded and primed area, so that when I used my mini sprayer (more on this in a minute) to spray the color on, the edges would naturally blend more easily into the surrounding, undamaged paint.  I figured the paint would set up enough so that I could easily spray on several thin coats during the day, finishing the job.
 

Im004032.jpg (187541 bytes)I used a Preval mini-sprayer, which you can buy at the marine store and probably other places.  These are great little tools--you mix whatever paint or finish you like, thin it appropriately, and you have a pressurized sprayer all set to go.  The cartridge will spray almost anything. (Yes, it has no CFCs.)  Now, I know all about the dangers inherent with spraying linear polyurethane paint (like Awlgrip), but I figured that spraying in such an open area, on a small section and for a brief time would be OK with just my respirator.

Unfortunately, the day I had chosen (and was stubbornly committed to) was much colder than anticipated, with temperatures in the high 40s in the afternoon.  Not ideal, but I thought it would be OK regardless.

I mixed up the smallest amount of Awlgrip Flag Blue that I could (1 oz. topcoat, 1/2 oz. converter) and thinned it till it sprayed easily.  Then, I tried spraying it on the boat.  It worked fairly well, and I did only a very thin coat.  On some of the smaller gouges elsewhere on the bow (I only sprayed the "smile", I used an artist brush to simply dab the paint on over the primer.  This will make the scracthes disappear from virtually any distance away, except for close up.  While this damage, and the less-than-perfect repair, will always bother me, no one else will notice when the boat is in the water.  I left the new paint to cure for a while and did some other things.

Later that day,  I deemed that the paint had set up enough for a second coat, so I sprayed it on.  I continued this through the afternoon, spraying a new coat every couple hours while I could.  Unfortunately, not only did this not cover the white primer very well, it also ended up becoming heavier than I had hoped, so I ended up with a couple "slumps", or longitudinal drips.  Finally, I decided I was simply not going to be able to cover the primer sufficiently in one day, so I stored the Awlgrip in the refrigerator and quit for the day.
 

Im004034.jpg (195018 bytes)The next morning, the paint had partially cured, but not completely--the temperatures were quite cold overnight.  Therefore, I wasn't able to recoat the area, since it was too uncured to sand (I had to sand out the runs).  Then, we had to leave town on an overnight trip that afternoon, so I was a little upset that I might have to mix up another batch of paint a couple days later to finish the job.

Fortunately, the paint remained fully uncured in the jar in the fridge, so I used what remained for my final coats. I sanded the previous coats with 320 grit to remove the drips, and finished with a green Scotchbrite pad, which worked perfectly to properly rough up the surface.   I abandoned the sprayer for my final coats, since it just wasn't doing what I had hoped.  Instead, I used a nice foam brush, which I had previously tested (while doing the boottop) to determine that they did not fall apart in the Awlgrip.  This time, I set up a heat lamp of sorts--I have this halogen work lamp on an extendable base that puts out a lot of heat, so I aimed that at the patch after applying the Awlgrip.  During the course of a day, I applied 4-5 coats of Awlgrip.  Each time, I had the maddening reappearance of the white primer through the finish...I guess Awlgrip is really one of those products, like alcohol-based finishes, that softens the underlying finish when new is applied, so you just end up rebrushing the whole buildup.  But I persisted, applying a coat of paint and turning the heat lamp on to speed its curing.  Slowly, I got most of the white "smile" covered until finally, only a small area that would not cover was left.  After a couple more tries, I got it almost, almost completely covered sufficiently, but decided to leave it alone for the day and see what happened after  night to cure.  I put the Awlgrip back in the fridge.

My thoughts on this difficulty:  the cheap foam brush had something to do with the lack of coverage.  It simply doesn't brush out a fine layer of paint the way expensive badger brushes do.  I would not choose to use a foam brush for anything but the smallest projects.  I use and like them for varnish, but I can definitely see an advantage to the pricey brushes when it comes to Awlgrip.

Also, I unquestionably thinned the Awlgrip just a little too much.  I added a splash of thinner when it came out of the fridge without thinking...but I had thinned the stuff more than usual when I mixed it for the sprayer.  Hopefully it will thicken up just a bit in case I need it one more time.

The next day, I decided to just leave well enough alone for now.  The patch looks good, though there is still that hint of a thin spot.  Perhaps I'll address this later, but for now this repair is complete.  Later, in the spring, I'll polish and blend the whole area a bit.  More on that when the time comes.  I'm just happy to finally be rid of the stupid "smile" that I had to put up with since early May!


Glissando, Pearson  Triton #381
www.triton381.com 

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