Todays update...
Weather the past two days has been perfect for what I've needed to do.
In addition to compounding and waxing, I had a repair that needed my attention.
At the end of last season, a buddy on my boat grabbed the rocket launcher to hoist himself up onto the washboard and sunk the fender washer underneath into the fiberglass.
I wasn't too concerned, because that would give me the opportunity to re-do the rocket launcher with backing plates, and mount it right.
The backing plates that I had fabricated are made of 1/8" stainless, 3.5"x5", and the exposed portion of the plates were buffed to a mirror shine.
A couple of days ago I removed the rocket launcher to clean up the area and buy new hardware.
Unfortunately, I also discovered that the previous owner (who added the rocket launcher after he bought the boat) had never properly sealed the mounting holes. :shock:
What that meant was that the balsa core around those bolt holes was wet. Fortunately, not rotten, but wet none the less.
So I hatched a plan, and yesterday I put it into motion.
First, I bought a Unibit that could bore a hole up to 7/8", and used it to open up all of the holes so I could get inside and dig the wet wood out.
Next, I chucked a series of allen wrenches into my drill and started hogging out the wet balsa until I got to good wood.
I dug out the wood in between the two mounting holes so that there was a substantial void between the fiberglass panels, and left everything open to dry.
Yesterday was a warm sunny day with a good breeze and low humidity, so the surgery dried out pretty quickly as I continued compounding and buffing.
Today was equally warm and sunny, again with low humidity, so this repair was game on!
I sealed the bottom holes with two layers of Gorilla tape and masked off the top side with three layers of blue painters tape.
Once I was ready, I mixed up a batch of West Systems - 4 pumps each of resin and hardener, and started pouring...
I went back and forth for about 10 minutes until I'd used up all of my epoxy.
As I poured, the epoxy must have been permeating the core quite a bit because I ended up mixing another 2 pumps of resin and hardener to keep the holes topped off.
After about 20 minutes, the epoxy level in the holes remained constant as the epoxy kicked.
Dang that stuff gets hot! :shock:
I gave the epoxy another 10 minutes or so, and then I removed the blue painters tape and allowed everything to set up and cool as I went about compounding the trunk cabin area.
Later in the afternoon, I put the backing plates over my repair and marked them in pencil on the top.
Then I mixed another small batch of West and coated the area that will be under the backing plates to seal all of the little spider cracks that had occurred during the period that the rocket launcher had been flexing.
Everything looks good for now, and sometime next week I'll drill through the epoxy and re-mount the rocket launcher with her new bling backing plates. 8)
Here are photos of the process I went through the past 2 days.