Do I have this correct?

[ShawnQ]

I am planning to add storage boxes to the interior of my 'rolled edge' boat. It is made of poly resin and glass.<br /><br />Do I have this right?<br /><br />Epoxy will stick to existing Polyester resin, but Polyester resin wont stick to existing Epoxy?<br /><br />I am trying to figure out what type of resin I need to buy.<br /><br />Thanks<br />Shawn

 

[fishingdan]

Re: Do I have this correct?

You are correct. Epoxy will stick to poly, but not the other way around (at least not very well).

 

[ShawnQ]

Re: Do I have this correct?

Can it actually be used as a 'glue' when applied on top of poly...or is it better to just use it as a resin for glass?<br /><br />I am planning to add these boxes:<br />

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<br />

<br /><br /><br />Here is how it looks now:<br />

<br /><br />I am planning of constructing it using 3/4" ply on the seat top and the vertical wall towards the inside of the boat. There should only be two pieces of ply needed because the other sides are existing.<br /><br />I plan to epoxy-glue wood cleats/supports onto the floor, onto the face of the front deck, and onto the gunnel. I then plan to screw and glue to these cleats. After that, I will add glass layers and fair it all down.<br /><br />All wood will be coated/soaked with epoxy resin prior to construction.<br /><br />Does this sound right? Am I missing something?<br /><br /><br />SQ

 

[ondarvr]

Re: Do I have this correct?

I have a Blue Wave also. You can add those storage boxes with poly or epoxy it won't make much of a difference, the only stress they get is from standing on them. If you want to use epoxy in an attemp to stop the plywood from rotting, then don't use plywood. Instead of using plywood make flat panels of fiberglass and cut them to the correct shape. Use an old window or sliding glass door as a mold to make the pannels. This method should cost less than buying plywood and epoxy and there is no chance of it rotting.

 

[ShawnQ]

Re: Do I have this correct?

What do you mean by using a window or glass door for a mold?<br /><br />I assume you are recommending this because it is smooth and flat?<br /><br />What model boat do you have? I've got a 189T (same as a 190T). <br /><br />Does your boat have these storage boxes? If so, how are they constructed? I would assume they are just glass, like you mentioned...no wood.<br /><br />Thanks<br />Shawn

 

[ondarvr]

Re: Do I have this correct?

I have an 189 classic without the boxes, with a 200 HP Evinrude on it. <br /><br />You can make flat stock yourself and use it just like you would the plywood. depending on how thick you make it, you can also make nice smooth bends with it. To make the flat stock you use a good mold release wax on the window glass, then apply resin and glass (three or more layers)on the window. When its hard, remove it from the glass and you have a flat panel that can be cut into any shape you want and will never rot.<br /><br />These panels can be use to form the walls of the box, then just glass over the entire box, just like there origianl construction on the boat.

 

[ShawnQ]

Re: Do I have this correct?

Originally posted by ondarvr:<br /> I have an 189 classic without the boxes, with a 200 HP Evinrude on it. <br /><br />You can make flat stock yourself and use it just like you would the plywood. depending on how thick<br />you make it, you can also make nice smooth bends with it. To make the flat stock you use a good mold release wax on the window glass, then apply resin and glass (three or more layers)on the window. When its hard, remove it from the glass and you have a flat panel that can be cut into any shape you want and will never rot.

I assumed this is what you meant, just wasn't sure. <br /><br />Is there a release agent you recommend?<br /><br />Also, a 200HP on a 189? Wow! Isn't it rated at 150hp?!? Mine is...but it's a tunnel boat, not sure if that makes a difference in HP rating.<br /><br />I'm also thinking about removing the S.S. side rails...still up in the air on this one. If I did it, I would have to fill the holes, which wouldn't be too bad...and they'd be easy to install later if I wanted to.<br /><br />Check my new post on Gel-Coat touch-up if you don't mind.<br /><br />Thanks for the help!<br /><br />SQ

 

[ondarvr]

Re: Do I have this correct?

My 200 is a crossflow and its not that fast, a new 150 would out run it easily.

 

[ShawnQ]

Re: Do I have this correct?

Ondarvr, <br /><br />What are your opinions on those boxes? <br /><br />I think they are a good idea because the area they are going in is a 'un-usable' space...you can't really walk there because the bottom angles up.<br /><br />I bet you get a lot of looks with that beast on the back <br /><br />Thanks for the help!<br /><br />SQ

 

[ondarvr]

Re: Do I have this correct?

I thought about adding them, but I just never got around to it. The added space would be nice.

 

[mjbrueck]

Re: Do I have this correct?

I wouldn't tab it to your hull with polyester resin. It won't stick very well. I had an old Boston Whaler that I removed the previous owner's casting platform from. After removing the screws, I was able to easily peel the added fiberglass off the hull. Your original idea of epoxied plywood would give you the most strength.<br /><br />Wood cleats glued (wood flour and epoxy resin) to the sole and sides, glue the forms to the cleats, and fiberglass tape all the seams.

 

[ondarvr]

Re: Do I have this correct?

Don't worry about the poly not sticking, the rest of your boat is made from poly and it's not falling apart. If the area is not prepped well (sanded completely) or they use cloth (very poor bond even on a well prepped surface)then it will fail, epoxy is more forgiving when either of these two things are done. Sand it well, use mat as the first layer and poly will not fail.

 

[ShawnQ]

Re: Do I have this correct?

I'm still debating on whether or not to do this...<br /><br />If I do, I think I'm going to do this:<br /><br />Use plywood and 2x4's to make a mould that will fit directly into the area I want it...only a 1/4" smaller all around. I will then clear and wax the plywood mould, apply PVA, and then glass over it to create a glass piece that I can then glass into my boat.<br /><br />Another question:<br /><br />Can anyone give me any type of laminating schedule for both the piece I am making to glass into the boat, as well as the the glass between my insert and the boat?<br /><br />I am not familiar with the different types and weights of glass...but have done a good amount of glass repair (on cars). I shouldn't have any trouble doing it...just need some help with product selection.<br /><br />Like I said...still not 100% sure about whether or not to do this...cost will be the biggest factor.<br /><br />Thanks<br />Shawn

 

[ondarvr]

Re: Do I have this correct?

So that it looks like it was done when the boat was first made, do it in a similar way they did.<br /><br />Make the part like you just discribed, but make it thin, then glass over the whole thing when it's in place. This way the finish will look the same as the rest of the boat. For the part (box) use 1 mat, 1 roving and then 1 mat. use that same layup over it when it's in place. It should be strong enough, if not put on another layer of glass.<br />Don't use cloth for any of it.<br /><br />You don't need to use PVA on the wood, just use wax, put it on very heavy and don't wipe it off.<br /><br />Use "Green Wax" if you can find it, but most release waxes will work. The inside of the box won't have great finish if this method is used, but it is very inexpensive.