Re: gel coat repairs
ABL-
If you have a die grinder...use a tapered grinding bit and while holding it an angle, grind out the crack. This will give it the v-shape which gives the glass or putty something to hold on to.
The amount needed to grind depends entirely on each crack. It it is a very small, hairline crack....start by just grinding away a little bit. Once you've ground out some of the surface....blow it off and look to see if the crack continues deeper into the laminate. If so...you'll need to grind some more.
As far as braiding roven is concerned.....just pull one or two of the existing braids out of it...and then braid them together. It will most likely be bigger than you need...but it will fill the crack and you can grind away an excess.
Hope this answers your questions.
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