1973 Ozark Tri Hull - Deck Rebuild

[tri-hull guy]

Re: 1973 Ozark Tri Hull - Deck Rebuild

thanks for the heads up didnt mean to "highjack" the tread sorry

 

[Pmccraney]

Great work...looks like you are a doing a thorough job... And, yes, be careful...even with a guard on I got careless and had the edge grind right through 2 gloves... Nasty little scar on my right hand...my first battle wound.

 

[glnbnz]

Re: 1973 Ozark Tri Hull - Deck Rebuild

thanks for the heads up didnt mean to "highjack" the tread sorry

No worries tri-hull guy. Hope your project is going good for you

Great work...looks like you are a doing a thorough job... And, yes, be careful...even with a guard on I got careless and had the edge grind right through 2 gloves... Nasty little scar on my right hand...my first battle wound.

Yeah I am keeping a close eye on it. I don't want any of those wounds. Thanks for the stop by Pmccraney!!

 

[JDA1975]

Re: 1973 Ozark Tri Hull - Deck Rebuild

Glad to see you finally got into the fun and dust of grinding! it wont last long so enjoy it!

 

[glnbnz]

Re: 1973 Ozark Tri Hull - Deck Rebuild

Glad to see you finally got into the fun and dust of grinding! it wont last long so enjoy it!

Oh I am enjoying every minute of it LOL

Thanks for the shout out JDA

__________________________________________________________________________________________

I have looked around and I know that I have read about drying times of plywood before putting resin and glass on them...but I can't seem to find them back so here is my scenario:

I am going to buy 3/4" Auruco plywood to do my stringers and bulkheads. Also I am going to use polyester resin on them. My question is how long will the plywood need to dry before I can start fiberglassing on them??

I know that I have a while before I can start fiberglassing I just thought that it would be a good idea to get the plywood purchased and drying whist I am waiting

 

[glnbnz]

Re: 1973 Ozark Tri Hull - Deck Rebuild

I have looked around and I know that I have read about drying times of plywood before putting resin and glass on them...but I can't seem to find them back so here is my scenario:

I am going to buy 3/4" Auruco plywood to do my stringers and bulkheads. Also I am going to use polyester resin on them. My question is how long will the plywood need to dry before I can start fiberglassing on them??

I know that I have a while before I can start fiberglassing I just thought that it would be a good idea to get the plywood purchased and drying whist I am waiting

Thanks for the GREAT support network!!

I am still looking but am not getting anywhere on my question. If anyone could help me out that would be great.

 

[bear_69cuda]

Re: 1973 Ozark Tri Hull - Deck Rebuild

I am still looking but am not getting anywhere on my question. If anyone could help me out that would be great.

Boss,

I'm getting my wood this week. My plan is to move it indoors and let a fan blow on it... I figure a week of drying and all will be good!

 

[glnbnz]

Re: 1973 Ozark Tri Hull - Deck Rebuild

Boss,

I'm getting my wood this week. My plan is to move it indoors and let a fan blow on it... I figure a week of drying and all will be good!

Oh cool a week...I was thinking somewhere around a month!! Thanks for the info Bear. Now I need to figure out where inside could I store the plywood!!

 

[Pmccraney]

Re: 1973 Ozark Tri Hull - Deck Rebuild

Glenn, There are others far more experienced than me... and Bear gave you a good rule of thumb...

The only thing I would add is "it can vary" depending on type of wood, how dry the wood is when it left the store, where you are storing it (humidity), etc... Don't lay it down directly on the garage or shop floor as wood can absorb ground moisture through concrete. Also, I found that my Aurauco dried pretty quickly.... whereas my exterior grade AC fir wanted to stay wait for a long time.

Lay out flat on some spacers with weight evenly distributed.... If you stack it vertically to keep it out of the way, it will belly out and warp on you... Once these big sheets warp, it is very hard to get them straight again. Also, I found that asking the lumber yard or home center to go ahead and cut them in half (2 * 8 pieces) really helps with transport and storage and keeping them straight. You are probably not going to use anything taller than that for your stringers and mounting areas anyway. Of course, you will want to leave your deck pieces their original, larger form (4 * 8). I really like the Aurauco ply.... Its dry, stays fairly straight, takes resin well and its cheaper...

 

[Jon Sob]

Re: 1973 Ozark Tri Hull - Deck Rebuild

Hi Glenn .... just read your thread and you have a nice little project going on there I would like to jump aboard and follow along. Your doing a great job so far and once the grinding is done then it is all down hill from there ..... good luck.

 

[glnbnz]

Re: 1973 Ozark Tri Hull - Deck Rebuild

It has been a while and the weather around here has been down right awful...

Hopefully this weekend is shaping up to be pretty nice. So I grind I grind I grind!!!

 

[ezmobee]

Re: 1973 Ozark Tri Hull - Deck Rebuild

Yeah Arauco is pretty dry. You probably wouldn't necessarily need to dry it at all, so a week or two should surely be sufficient. It's extremely nice wood also. I used it for my transom and wish I'd used it for my deck. The regular Home Depot exterior grade I did use was crap. Voids all over the place.

 

[glnbnz]

Re: 1973 Ozark Tri Hull - Deck Rebuild

Okay I have done some math on my stringers and bulkheads...let me know if this makes sense.

There is 519" of area on both sides of the stringers
288" on both sides of the bulkheads
So add those together and that give me 807" of total area or 67.25' or 22.42 yards.

I figured that I will use 4" 1 1/2oz CSM tape for the first layer
- Which uses 1.25gal of resin for a whole roll (110yards) but I will only figure for 25 yards...or .23 of a whole roll
- So .23 x 160oz of resin (1.25gal) = 36.8oz of resin for the 1st layer

Layer 2 I will use 6" 1 1/2oz CSM tape
- Which uses 1.75gal of resin for a whole roll (110yards)
- .23 x 224oz of resin (1.75gal) = 51.52oz of resin for the 2nd layer

Layer 3 I will use 6" 1708 Biaxial and according to this website 1708 takes a little less resin to wet out than 1 1/2oz CSM so I will figure at CSM values:
- .23 x 224oz of resin (1.75gal) = 51.52oz of resin for the 3rd layer

Layer 4 will be a copy of the 3rd layer:
- .23 x 224oz of resin (1.75gal) = 51.52oz of resin for the 4 layer

So in summary the parts list for glassing the stingers w/o capping is:
1. 25yards 4" 1 1/2oz CSM tape
2. 25yards 6" 1 1/2oz CSM tape
3. 50yards 6" 1708 Biaxial tape
4. 181.36oz of resin (I will buy 5gallons just to get started)

So does my math look okay??

 

[glnbnz]

Re: 1973 Ozark Tri Hull - Deck Rebuild

Just a little update...


Grinding is now complete. I guess that I am one of the lucky ones who doesn't get itchy from fiberglass dust. No pictures this weekend because of too much dust and I don't want to subject my camera to that.

Next I have purchased some 3/4" foam board to do my templates of the stringers and bulkheads. I believe that I will be able to get by, if I have figured correctly, with 1 sheet of 3/4" Aruaco Plywood. Also on another note my local lumber yard has MDO plywood in stock!! Both in 1/2" and 3/4" thicknesses. So I know where I am going to get my deck plywood.

Well that is all I have for now...keep on building

 

[Pmccraney]

Re: 1973 Ozark Tri Hull - Deck Rebuild

Congrats on being done with grinding... I was a little lucky in regards to the itch as well. I think people just react differently to it....

Now, on to the fun part...

 

[glnbnz]

Re: 1973 Ozark Tri Hull - Deck Rebuild

Quick question:

I have seen on here discussions about using different kinds of plywood for stringers, transoms, decks and etc. I am having a hard time finding Arauco Plywood locally...could I use MDO plywood to do my stringers? I have that plywood readily available at my local lumber yard.

thanks

 

[bear_69cuda]

Re: 1973 Ozark Tri Hull - Deck Rebuild

MDO is good stuff! I would have no issues using that for stringers, you'll need to rough-up the finished smooth side before glassin' it....

 

[glnbnz]

Re: 1973 Ozark Tri Hull - Deck Rebuild

Thanks Bear I was pretty much thinking the same way...just wanted some confidence

 

[Woodonglass]

Re: 1973 Ozark Tri Hull - Deck Rebuild

Ask your lumber yard if the have Floor Underlayment. That is really good stuff for stringers. 100% waterproof glue and very few voids in then lams. Price is right too!!

 

[glnbnz]

Re: 1973 Ozark Tri Hull - Deck Rebuild

Ask your lumber yard if the have Floor Underlayment. That is really good stuff for stringers. 100% waterproof glue and very few voids in then lams. Price is right too!!

Very good I will check that out also, thanks Woodonglass.