1974 Ebbtide Restoration - SPLASHED

[mercurymang]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

Next time you place an order for glassing materials, get a catalyst dispenser like this one.



The top cup is graduated in mL (CC's), you just squeeze the bottle until you have the desired amount in the top cup, then pour into your mix. It's a real time saver, in my opinion, and helps keeping you from making mistakes with the ratio. I think it costs around $6, so why the heck not. I can't imagine how much time it's saved me along the way.

Cool

Or go to the drug store and get some of these. They're real cheap too... $5 bucks for 100 of em.

This is the exact measuring cup that came with my hardener from USC. I went to a pharmacy the other day and asked for some of these and they said they did not have any. I guess I'll try somewhere else.

BTW, I thought that if you don't use any wax, the outer portion of your resin will remain tacky for a while. The sample I created last night is now hard as a rock and tackfree as glass.

 

[Decker83]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

I bought 100 of these ^^^^ from USC..

 

[tpenfield]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

I usually get 1 or 2 of those little measuring cups with the supplies. I try to take good care of it so that it will last throughout the project and all of the measuring and mixing.

 

[Woodonglass]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

I get mine online...$2.50 + shipping...https://www.kosmetech.com/item.asp?idProduct=239&idCategory=15&idSubCategory=15

 

[bvetter]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

BTW, I thought that if you don't use any wax, the outer portion of your resin will remain tacky for a while. The sample I created last night is now hard as a rock and tackfree as glass.

My unwaxed resin is the same. You'll find though, if you sit or kneel on a recently cured spot for a little while, your pants will stick to it a little bit. If you do a quick wipe with acetone, should become nice and tacky.

 

[Woodonglass]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

Yup, the longer it cures the less tacky it becomes. Different Resin reacts differently. Some people report their resin stays tacky for a long time. Humidity, temp, exposure to sunlight all of these factors can have an affect.

 

[mercurymang]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

Last night, I drilled out all the places that will have through hull fittings. My plan is to first put a layer of CSM on the hull side of the transom. Next, I'll mix up some PB and fill all the holes. Then I will install the transom.

Sound correct?

 

[Woodonglass]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

I'd recommend studying this..."Fabricating Decks, Stringers, and Transoms"

I like to have some OOZE holes in the transom to help form a Mechanical Bond. You don't HAVE too, Just My recommendation. This member did it and it came out GREAT...http://forums.iboats.com/boat-resto...r/1982-sylvan-bassboat-project-526064-12.html

 

[mercurymang]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

So I ran some very rough calculations to determine how much resin to mix up for the transom install. My transom is roughly 61" X 18". I estimated the coverage to be about 1/8" as the average of a 1/4" trowel. That comes to about 1098 square inches. Multiply by 1/8 and you get roughly 138 cubic inches. I'm trying to stick to the metric system for this so converting that to milliliters you get roughly 2261.41ml... Anyone see a problem with my math?
I figure i'll go ahead and mix up 3L of PB, that will allow me to get extra on the edges to fill in the gaps. I'm pretty sure I'll need someone to help me mix it because if you are supposed to mix for 2minutes and i am mixing up 3 1Liter containers, that 6 minutes. That leaves me 14 minutes to spread the stuff and get the transom installed give or take.

 

[Decker83]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

Be careful about how much resin you mix in 1 liter container.. The more resin you mix the faster it will kick in the container..

I have seen a quart of resin kick in 10 minutes or less in the sun..

If you mix that much at one time, you better get it spread fast or you will have some wasted PB..

Just my 2 cents worth..

 

[mercurymang]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

Be careful about how much resin you mix in 1 liter container.. The more resin you mix the faster it will kick in the container..

I have seen a quart of resin kick in 10 minutes or less in the sun..

If you mix that much at one time, you better get it spread fast or you will have some wasted PB..

Just my 2 cents worth..

So are you saying to mix the same amount just in smaller batches?

 

[Decker83]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

You can mix 1 liter at a time and be ok.. I would not try to mix all 3 liters at one time.. If you have help let them start to mix the second batch while you start spreading the first batch..

You can also mix the PB without the MEKP in the second and third batch and when your ready for the next one add the MEKP. Mix very well if you do it this way..

A lot of gentlemen will not agree with me.. I have done it this way and I think that GT1M has referred to this also in his thread..

 

[bvetter]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

I had no troubles mixing a couple of 3L batches when I did my transom. I used a 2.5 gallon pail and a mortar mixer attachment for my drill. Mixed a 3L batch in about minute, and worked way better at breaking up the cabosil chunks than if mixed by hand. Had the second batch ready to be mixed.

 

[Woodonglass]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

Yup, Decker's leading you right. Mix it up in 1 litre batches and add the MEKP at the last when you're ready to go.

bvetter, I STRONGLY advise NOT to use a power mixer to mix resin and or PB It can and will introduce AIR into the mix and this is never a good thing.

 

[tpenfield]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

My 2 cents . . .

Math looks OK (0.6 gallons) 2.27 liters, but figure the 'solids' portion of the PB mix may result in not needing as much resin to get to your 3 liters.

You can cool the resin beforehand to slow the reaction down to allow more time to get things set up. When I built my fiberglass dinghy, I stuck the resin in the freezer for a while to get it down in temp . . . it allowed for about 40 minutes of working time.

Depending on when you add the catalyst, PB can be tougher to get the catalyst thoroughly mixed for a good activation.

The less time the activated PB stays in the mixing container, the better, as the resin will begin to generate its own heat once activated. If you have a helper, it would 'help' get things distributed faster.

 

[GT1000000]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

All of the above^^^^...Plus...
You can use a bigger container to mix larger batches...
Example, mixing 2L of resin in a 5L bucket, etc...by doing this it gives the volume of resin more air to dissipate the chemical heat it begins to generate...
Have fun and remember, it's only scary the first time or two, after that it almost becomes routine...almost...
Happy Friday!

 

[mercurymang]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

Thanks all. Ya, as you can tell i'm a little nervous about pulling the trigger on this. I like the idea of using a bigger bucket as it seems that it would keep the resin from reaching "critical mass".

This weekend, I'm going to start on my clamps. I had a thought. All the clamps I see use 2X4's to butt up against the outer portion of the hull. I know my hull is a little flimsy and it seems that this would cause it to bow out in the areas between the clamps. What about putting a piece of plywood on the out side of the hull and clamping to that. That would force the hull to to stay nice and flat. Anyone ever try that or is that a bad idea?

 

[Decker83]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

If you are using WOG clamping system and your transom is good and flat you shouldn't need the plywood on the out side..

I did see someone here modify WOG clamping system by screwing some 2x4's to the inside of the hull side vertical 2x4's.. That gave it more support across the transom.. I think they also added a stop to rest on top of the transom to make it easier to set the clamps..
If you do this make sure the 2x4's are very straight.
You could also do this with a good straight piece of plywood.
Hope everything goes good for you..

Being a little nervous is good.. Helps you think out all the little details and makes for exciting restoration..
It will be fine and you will do a great job..

 

[mercurymang]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

I spent most of the morning yesterday repairing a broken weed eater but was able to procure most of what I need to make the clamps. This afternoon after church and some Mother's day stuff, I was able to get the WOG clamps made. I could not locate any 12" bolts so I had to use all thread. I'm going to adjust these to where they need to be and then back the nuts off just a hair so I can install them. Then hopefully, there wont be too much adjusting to do to get them secure.

 

[GT1000000]

Re: 1974 Ebbtide Restoration

Re: 1974 Ebbtide Restoration

No matter how you approach the installation of your transom plates, I highly recommend you do a couple of dry runs, going through all the motions of installing the transom...that will help you get familiar with how long it will take to do certain tasks and hopefully point out any missing items or techniques well before you go "hot"...If you will have an assistant helping you, they need to rehearse with you to keep from getting all tangled up in the "heat" of the moment...