1979 19 ft Sea Ox rebuild

[fallguy1000]

1700 is fine...no need for 1708

Sure, but for me, I'd then use four 1700 tapes to get the same or similar weights/thickness. The only reason I default to the 1708 is less work. If you don't have it; that creates more troubles.

1708=25 oz x 3 = 75 oz
17 x 4 = 68 oz

It's my firm belief that the mat adds less than 1/2 the strength, and uses nearly twice the amount of resin. I've not read this entire thread (to be honest I skipped from page 1 to this page...the last page as I type this). If the OP is using poly, I won't say not to use 1708...but if he's using epoxy, then I stand by the '08 being a waste.

And I would absolutely use four layers of 1700 for those stringers.

All good, just trying to get over 1/8 thickness. The only reason I say mat is it is so easy to table wet and move to the boat. I use 1208 tapes same way. Yes. Weight penalty, but work is cleaner.

[lelandtampa]

Isn't 1708 17oz with a 3/4 oz mat?

[fallguy1000]

Isn't 1708 17oz with a 3/4 oz mat?

Yes, but 3/4 oz mat is per sqft, so times 9*3/4 oz per yard is 27/4 or about 7 ounces per sqyd. For some reason I round up to 25, perhaps I am wrong.

[lelandtampa]

I see mat is per sqft not yard. Learn something new everytime out with old Colt Seavers

[fallguy1000]

I see mat is per sqft not yard. Learn something new everytime out with old Colt Seavers

Noone has ever gone the extra step to call me Colt. Sorta fun. Thanks.

fg

[Mr Pamlico]

1700 is fine...no need for 1708. If you've got it, use it.

I'm not a huge fan of the stringer butt joints nearly lining up across the hull. A larger stagger would be preferred...but that's just me.

It did not even cross my mind the problem of the butt joints being the weakest link in the stringer and all lining up until you just mentioned that. I just cut the first part of the stringer out of a 4x8 sheet and then added whatever was needed to finish. I agree I definitely should have staggered my joints. This is my first boat build so I am learning a lot as I go. Although that should have been somewhat of a common sense decision lol

[Mr Pamlico]

Sure, but for me, I'd then use four 1700 tapes to get the same or similar weights/thickness. The only reason I default to the 1708 is less work. If you don't have it; that creates more troubles.

1708=25 oz x 3 = 75 oz
17 x 4 = 68 oz

It's my firm belief that the mat adds less than 1/2 the strength, and uses nearly twice the amount of resin. I've not read this entire thread (to be honest I skipped from page 1 to this page...the last page as I type this). If the OP is using poly, I won't say not to use 1708...but if he's using epoxy, then I stand by the '08 being a waste.

And I would absolutely use four layers of 1700 for those stringers.

All good, just trying to get over 1/8 thickness. The only reason I say mat is it is so easy to table wet and move to the boat. I use 1208 tapes same way. Yes. Weight penalty, but work is cleaner.

I will be using 1700 because that is what I have. Also this project is the first time I have ever done any fiberglassing so it is what I’m familiar with. I will do the same tabbing you suggested for the stringers to hull bottom to tab them to the transom. 10,8,6,4

[Fuzz]

If you already have the 1700 that is what I would go with if using epoxy. It is just so much easier to wet out for me.

[Mr Pamlico]

I got the middle stringer tabbing sanded last night ready for capping and I am not looking forward to that sanding on the rest of the stringers lol. I also got my fuel tank pad glassed in. When I got finished I put a level across the stringers just to check them again before capping. I am level everywhere but in the middle of the right stringer. It looks like when I had them clamped up and suspended to bed them in the putty it bowed out a little bit in the center. I am trying to decide if I should try and cut a piece to go up there now before capping or deal with it after I cap them. My idea now was to go on and cap the stringers and then glue two strips of coosa on either side of the stringer to make where the floor would sit level. I would then fill in between them with thickened epoxy to level that off before gluing the floor down. I had planned on adding those strips to the top of the stringers anyways to give the floor a bigger bonding area

[boguesounder]

Looking good. How much space do you need to raise that stringer to make it level with the others?