Re: Sport-craft restore
Would I have to worry about waxed resin if I do some (more like a lot) grinding and wipe with acetone?
So is my idea sound compared to what I have now? Reason why I'm not taking out the stringers is my lack of skills. Might have a lot more when I get done with this.
you would need to grind off the top layer of waxed resin to get any kind of bond to the old glass.......being new with a grinder.....i will GAURENTEE you will go thru the old glass that covers the stringer, and most likely the hull it self......but dont worry....it is an easy fix.
wax is a release agent....poly resin....or for that fact even epoxy will not properly bond to a waxed surface......so all the wax must be ground off....no amount of acetone will wash it off....it is in the matrix of the resin now.
the idea of adding a resin based filler to your stringer area is an old one....products like seacast.....are commonly used . but are very expensive.
a resin.chopped strand filler could be used......but for a novice....i would not recommend it....there are many factors that can go wrong. factors like an improper resin to glass mixture....this will make the resin very brittle....
also....if you use too much resin filler at one time.....the heat during cure will build up.....and cook the resin ....this will give you a very weak product......if you hit it with a screw driver handle too hard....it will break.
this is not to mention that when you are giriding....you will burn through the glass....causing a hole for the resin to leak out of......in some cases...the burn thrugh might be a few inches long.....that means no wall to hold your resin mix.
so....as you can tell.....while in theory...it might be a strong idea...in a practical application, it might not be the best for you......there are other far more easy ways to give you the same results you want, with out worrying about cooked resin and is the stringer is actually strong enough to do the job you need it to do.
one of the easy ways you can build a stringer......is to sister a piece of wood to the existing good stringer, then glass the whole shabang......this is kind of a hack job.....but it works.
i think the real problem is that you are afraid of your skill level........
well.......just don't you worry about that......we can walk you right thru it.......this is not a hard thing to do....
there is many of iboater that cannot tell a rivet from a screw, and we have taken right thru a full gut job on a boat, and came out with a great product.....
trust us.....do what we suggest.....and you will have a really great long lasting boat.
when i started my project.....i did not know very much about boat building.....now i own a boat rebuilding company, and there is NOTHING in a boat that I am afraid to do.
if i may suggest........read the first 16 pages of the thread in my signature (just forget about the extension stuff.....just look at the transom and stringer info)......and check out friscoboater's boat build threads. both of these threads are stickys in the how to section on the top of this forum. there is also another thread in the completed projects section called skanky beast re visited. until i did my project it was the forum "how to".
continue with your gut job.......get everything out of the boat......the deck off....and get it clean......then take something called a core sample......this will tell you how far the rotten wood goes (under the glass) tell us.......and we can guide you to the fastest cheapest way to rebuild your boat.
by the way......i am currently following about 60 threads here at iboats and i will try to follow this one as close as i can......but if you get stuck.....and our guys here dont have the answer......just send me a pm with the link to your thread....and i will jump in.......but there are some really good guys here that know there stuff.....
ok....im getting dragged to bed now.......hockey game in the morning......
cheers
oops
btw...
foam was manditory in 72......but most builders were using foam as early as 62....and by the mid 60's it was in almost every boat in some form or other.
I have been planning on this since May so I have done some serious reading on iboats and other sources got all sorts of ideas. I thought I had lots of wet foam because the boat seemed heavy from my experience and the way the boat sat in the water, well ripped most of the deck out and to my surprise, no foam at all. One problem that don't have to be dealt with. Deck was more water than solid wood don't know why it didn't flex with my big butt all over it. Center stringer is completely rotted but the fiberglass is intact. Haven't examined (internally) the outer ones yet. I've read where the top of the stringer can be cut off and resin thickened with fibers poured into the cavity, of course all wood removed prior to pouring. Comments on this are welcomed. What is the minimal thickness of plywood i can use for a deck which will be glassed? It will be sitting on the foam as well as stringers.
