new build GT Cruiser 23

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LaChefels
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Re: new build GT Cruiser 23

Post by LaChefels »

Good morning,
I got one side sanded this morning making the radius. In some spots the thickened epoxy doesn’t fill the radius completely. Should I go back and wet that area with epoxy and fill in with thickened epoxy and use the tool you recommended as soon as it arrives? Or have I really screwed up?
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jacquesmm
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Re: new build GT Cruiser 23

Post by jacquesmm »

Tool or not, you can't have voids in there, Fill it with putty please.
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LaChefels
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Re: new build GT Cruiser 23

Post by LaChefels »

Thank you Jacques,
That’s what I thought

fallguy1000
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Re: new build GT Cruiser 23

Post by fallguy1000 »

LaChefels wrote: Mon Jun 13, 2022 9:54 am Good morning,
I got one side sanded this morning making the radius. In some spots the thickened epoxy doesn’t fill the radius completely. Should I go back and wet that area with epoxy and fill in with thickened epoxy and use the tool you recommended as soon as it arrives? Or have I really screwed up?
Nope. It is perfectly as I expected. Void needs fill.

Gotta clean it well with compressed air a/o acetone and fill it some more with something like the tool I showed you or any. Do not wet it first with epoxy. Thickened won't stick well. Just mix up the filler thick enough so that when you trowel it to a pile on the board; it doesn't collapse in like 5 seconds.

Fillers also get troweled onto a board and laid flat. Do not pastry bag in that heat. Make small batches. Get a gram scale and work out a putty formula for your epoxy ans filler. The filler must not sag out, so fairly thick, but homogenous. Thickened epoxy gets thinner as worked, so pay attention to this fact and another reason to small batch.

Here is something similar, but this is final fairing. This is not a great video, but may help. And I do not show cleanup, but you take a 3-4" trowel and clean the flat sides..

https://youtu.be/o74PwqLduus
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fallguy1000
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Re: new build GT Cruiser 23

Post by fallguy1000 »

After you gain some experience; these fills can be done and then you can tape right over them green on green or actually, wet on wet..
Last edited by fallguy1000 on Mon Jun 13, 2022 8:42 pm, edited 1 time in total.
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LaChefels
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Re: new build GT Cruiser 23

Post by LaChefels »

Got it. I’m on it tomorrow.

LaChefels
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Re: new build GT Cruiser 23

Post by LaChefels »

Finally
I got the seams right, I think. I’ll send pics tomorrow. So now fiberglassing seams. How do I terminate the ends of the 2 1/2” cloth at junctures? Do I cut flush.? Blend over like wrapping a package.?
I’m going to start on the stern transom.
Hope y’all are well. Texas has been brutal this summer.

fallguy1000
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Re: new build GT Cruiser 23

Post by fallguy1000 »

LaChefels wrote: Sun Jul 17, 2022 10:26 pm Finally
I got the seams right, I think. I’ll send pics tomorrow. So now fiberglassing seams. How do I terminate the ends of the 2 1/2” cloth at junctures? Do I cut flush.? Blend over like wrapping a package.?
I’m going to start on the stern transom.
Hope y’all are well. Texas has been brutal this summer.
It depends.

You really don't want to build hook into the hull bottom in any boat.

You also don't want to butt tapes to each other.

So, you have to plan how to do minimal overlaps sometimes.
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LaChefels
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Re: new build GT Cruiser 23

Post by LaChefels »

I’m looking for pictures on the forum I haven’t found any. I’m probably not using the right terminology. I’ll keep looking

fallguy1000
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Re: new build GT Cruiser 23

Post by fallguy1000 »

I understand what you mean.

The easiest thing to do is to overlap all of them fully. If you have a massive hump; you can always grind it flatter with a sander and 40 grit if you are unsure.

Tapes are always staggered.

Here is a finger sketch of a transom. The orange tapes would be laid and then green. The ends terminate at the long edges. The goal is for all edges to get two layers of tape minimum. On the corners, you may have four layers of tapes. After it is all done, you can flatten these a bit with a sander, but not too far down.

Eventually, a workboat grade finish is light fill of this seam. A high grade of finish is filling the entire transom so these tape lines vanish.
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