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Gas Tank Hatch Recore

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Gas Tank Hatch Recore

Postby '84Offshore » Nov Tue 05, 2013 12:58 am

Removed the hatch over where the aux tank would be if I had one.
It was very soft. The core just about came out in one piece......
Not bad for a couple hours of work.......

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Re: Gas Tank Hatch Recore

Postby JeffN » Nov Tue 05, 2013 12:22 pm

Off to a good start. Please keep us updated on your progress.
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Re: Gas Tank Hatch Recore

Postby DennisG01 » Nov Tue 05, 2013 1:23 pm

I'm about ready to start the same thing!
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Re: Gas Tank Hatch Recore

Postby '84Offshore » Nov Tue 05, 2013 3:27 pm

Hope to get some glass on it before it gets too cold.
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Re: Gas Tank Hatch Recore

Postby DennisG01 » Nov Wed 06, 2013 12:37 am

What's your plan of attack? Is the core 3/4"? My initial thought was use to pre coat the new piece of marine ply with a few coats, then glue down with thickened epoxy - sort of like tile flooring. Not sure if I'd even need to lay any glass? Thought about using Coosa, but not sure I need to go to that expense.
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Re: Gas Tank Hatch Recore

Postby '84Offshore » Nov Wed 06, 2013 12:52 am

Check out this thread from last year...........

viewtopic.php?t=19969
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Re: Gas Tank Hatch Recore

Postby DennisG01 » Nov Wed 06, 2013 1:20 pm

Good thread, thanks for the link.

This, I'm hoping, will be a lot easier than my last large repair. I replaced some soft wood that was on the underside of the anchor locker deck on my Sundancer. BUT, I did it w/o removing the top skin so all the work was done through the anchor locker hatch and upside down, backwards, twisted and contorted! It came out nice and in the end, I decided to put some fake teak up there (Actually, really nice!) so if I would of thought of that first, I could of skinned it!

Yeah, I know what you mean about the mix ratio if you're doing it drop by drop. One or two drops one way or the other (depending on ambient temp) can make a big difference.

As you may have figured out by now, if you're mixing large batches of epoxy (or just in a container that keeps the epoxy in higher volume) it kicks really fast. A trick is to mix it up, then spread it out thin. If it stays in the container, it retains the heat thus causing it to kick quickly. You can spread it out on the working piece, or even a scrap of something. Anything will work - just as long as it's not contained too much.

If you're using the West system, they make not only a slow hardener, but also an extra slow hardener and both will give a noticeably longer working time. As it's getting colder outside, that will help, too.
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Re: Gas Tank Hatch Recore

Postby DennisG01 » Nov Wed 06, 2013 3:56 pm

Oh... another way around having to put screws (from the deck hatch) into wood... You can overdrill the pilot hole to about 2-3 times the size of the screw. Then, come back and fill it with epoxy. Then redrill your pilot hole - this way you are only screwing into epoxy. If the hole would end up being so large that it would be visible on the floor side, only drill out the wood side.
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Re: Gas Tank Hatch Recore

Postby '84Offshore » Nov Wed 06, 2013 5:06 pm

When I install the new plywood I don't go all the way to the edge......maybe leave about an inch around the edges and put in a layer of mat.

Check out the end of this thread where gw204 gives his input........ viewtopic.php?f=3&t=19451
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Re: Gas Tank Hatch Recore

Postby DennisG01 » Nov Wed 06, 2013 6:27 pm

Sorry - I wasn't very clear. I did see that way - was just offering another way. Depending on the current thickness, adding that extra layer of glass (like you mentioned), is a good idea. In reality, it probably doesn't matter too much as it isn't in a real high stress load area, unless the current holes have gotten a little enlarged.
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Re: Gas Tank Hatch Recore

Postby '84Offshore » Nov Wed 06, 2013 6:41 pm

No problem......just wanted to point out gw204's method.......he's way beyond me!
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Re: Gas Tank Hatch Recore

Postby '84Offshore » Nov Fri 08, 2013 1:33 am

Cut the plywood tonight........hope to glass it over the w/e........

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Re: Gas Tank Hatch Recore

Postby '84Offshore » Nov Sun 10, 2013 8:06 pm

Installed the plywood and got glass around the edges today....

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Re: Gas Tank Hatch Recore

Postby DennisG01 » Nov Sun 10, 2013 10:27 pm

Lookin!' good!

I was looking at my hatch today and, although I didn't measure it, I looked like 1/2". Does that sound correct? It looked like the rest of the floor is 3/4"?
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Re: Gas Tank Hatch Recore

Postby NIGHTIDES » Nov Mon 11, 2013 2:28 am

DennisG01 wrote:Lookin!' good!

I was looking at my hatch today and, although I didn't measure it, I looked like 1/2". Does that sound correct? It looked like the rest of the floor is 3/4"?



It is 1/2" in the one that I did..
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