So what say you ??? what would be your approach??
Hence, the grinding back at a 10:1 ratio to do away with the biggest part of the rim so there isnt a hole to fill.... just a proper layup..HMMM not sure how I would get fiberglass roving and or matte into the bottom of this hole.
if that is the way you want to do it, then yes, you have to make sure you grind it out to get most of the damaged bits out of the hole... if you do intend to go forward with the repair by just plugging it, why not use epoxy putty?... it has all the microballons or filler already in it... thats all they are is filler to thicken up the resin so it will stay put.The hole doesn't go all the way through. The bow appears to be is several inches thick. Originally reinforced with Kevlar at the factory. Normally, I would agree with feathering back 10 to 1 but that worries me in this case as I'd have to grind half my bow away and rebuild. Thus the reason I was thinking some kind of fill. Daveinet says foam I was thinking epoxy with the 403 microfiber as filler. I would grind some of the inside of the hole to get adhesion. Then once I'm say a 1/4 inch or so from the surface grind 10 to 1 there. If half the bow needs to removed to have a proper repair then I might have to say that it is beyond my skill set. If it was just the upper two holes I'd be ok but the depth of the bottom one worries me.
yes, once you get the prep work done without any voids where air could get trapped, you can do the lay up on a piece of plastic sheeting, then press the whole thing into place at once... and press it in and form it with your hands on the back of plastic keeping your hands clean... this works great for overhead work.I wached a boatyard worker do a similar repair. Roving was a pita until he applied it to a mat first then applied the pcs as one.