1986 Skeeter Starfire 90 Resto.

[Woodonglass]

Re: 1986 Skeeter Starfire 90 Resto.

Hmmmm take the advice of a salesman or take the advice of a seasoned pro with years of experience???? I wonder what I WOULD DO???


I'm just sayin...

 

[RobbyA]

Re: 1986 Skeeter Starfire 90 Resto.

Hmmmm take the advice of a salesman or take the advice of a seasoned pro with years of experience???? I wonder what I WOULD DO???

Ditto........

 

[JAFO1]

Re: 1986 Skeeter Starfire 90 Resto.

Hmmmm take the advice of a salesman or take the advice of a seasoned pro with years of experience???? I wonder what I WOULD DO???


I'm just sayin...

So, you're just sayin' that there is a difference between the DDM30 and MEKP9? It's not just the amount of oxygen that it puts into the resin? And that you don't think cooling the resin would help?

 

[ondarvr]

Re: 1986 Skeeter Starfire 90 Resto.

DDM 30 is about half the strength of normal catalyst and allows you to mix at closer to the lower end of the recommended range and ensures you get it blended in better. If the lowest % recommended is 1, you should add more than 1% though, because in reality you have less of the active ingredients.

The best catalyst to use in this situation would be MCP75 (other brands have other names for the same product) its a blend of MEKP and CHP.

When I said you were using my resin, its because C1 uses the product I sell as their house resin. The last couple of digits in the code should be the gel time at 77F.

 

[JAFO1]

Re: 1986 Skeeter Starfire 90 Resto.

DDM 30 is about half the strength of normal catalyst and allows you to mix at closer to the lower end of the recommended range and ensures you get it blended in better. If the lowest % recommended is 1, you should add more than 1% though, because in reality you have less of the active ingredients.

The best catalyst to use in this situation would be MCP75 (other brands have other names for the same product) its a blend of MEKP and CHP.

When I said you were using my resin, its because C1 uses the product I sell as their house resin. The last couple of digits in the code should be the gel time at 77F.

Thanks for the input!
I have plenty of MEKP9, is it acceptable to use at lower ratios, or should I bite the bullet and get the MCP75? I think the smallest container of catalyst I can get is one gallon, other than MEKP9.

Now, back to my soft putty batch. It finally set up.

I wish I could take advantage of the lower temperature today, but half-day of school for my son. I'll probably just do some fitting and grinding this morning.

 

[JAFO1]

Re: 1986 Skeeter Starfire 90 Resto.

I have a small problem. It rained last night, which I'm thankful for. But, my tarp let some water in. How long do I have to let the hull dry before I can start puttying and glassing?

 

[Woodonglass]

Re: 1986 Skeeter Starfire 90 Resto.

Put a Fan in it and give it 3 -4 hours in direct sunlight. You'll be good to go.

I'm just sayin...

 

[JAFO1]

Re: 1986 Skeeter Starfire 90 Resto.

Put a Fan in it and give it 3 -4 hours in direct sunlight. You'll be good to go.

I'm just sayin...

I was wonderin' where you were!

Got my squirrel cage fan on it now, but will probably have to wait for sun until tomorrow. Also, I wiped it down with a liberal dose of acetone.

 

[Yacht Dr.]

Re: 1986 Skeeter Starfire 90 Resto.

Hello JAF..

I really didnt know if I should chime in here..but I have to say..

1. If you have "white" glass.. grind and reglass.. ( from water or contaminated glass ).

2. Your working time with your poly MAY not be due to the cat ratio ( 10cc/qt @ 77 etc. ). It is more Likely your Quality of your resin.. Where did you get this resin ?

I have had some sweet low VOC resin in summer that would give me Plenty of working time in a hot bilge.. then again I have had some Crap resin that I would mix,start wetcoating..then BANG it goes off with the brush inside the cup like THAT FAST !

Many do not believe me when I say Resin is not just Resin.. you dont buy *ondo resin and have the same working time or qualities as your more expensive resins.. You only get a Real bad experiance in your resto m8..

BUY QUALITY when working on boats ..

YD.

 

[JAFO1]

Re: 1986 Skeeter Starfire 90 Resto.

Howdy Doc!

Chime away! Everyone is welcome here!

The only "white glass" is from the factory. None of my work 'whited out.' (The water didn't reach where I was working, but that is irrelevant)

I'm using Composites One. It's supposed to be good stuff. I'm pretty sure that last batch I made was bad due to an impropper cat ratio and poor mixing on my part. What I would like is more, what I call, 'pot life' or working time. I think I may mix my cat with some Vaseline next time.
Between Ondavrv and my C1 guy, and everyone here, I think I will get it figured out. I want to learn the 'why' not just 'do it this way'.
I agree on buying quality. Why go through all this trouble, only to have to do it again later.
I have to say, this boat stuff may be something I could be good at. It combines all my interests, wood work, engines, metal working and fishing. If my little boat had a bed, I'd never have to leave it!

 

[JAFO1]

Re: 1986 Skeeter Starfire 90 Resto.

Stringers are strung! Puttied in. I still need to putty where I had some bracing holding the stringer while the putty set. I know in a couple of the pictures they look uneven, and they are a bit, but they sit in the same exact spot as the old stringers.
It is considerably cooler today. I didn't have any trouble with my resin. I paid closer attention to the CC's and mixed longer and better.
Just a few cross braces and other pieces, and I'll be layin' mat and rovin soon.

 

[ondarvr]

Re: 1986 Skeeter Starfire 90 Resto.

Post the code off the pail and I can tell you what it is.

Being LOW VOC means nothing other than it meets the MACT emission regulations for the industry using it, marine is different than RV, and the corrosion industry is different than these two.

Any GP resin purchased from C1 in pails would normally be a MACT compliant product (low VOC), the gel time, which has little to do with quality, can vary a great deal. They may have several gel times for you to choose from, 20 minutes and 35 minutes are the two normal ranges for products sold and labeled as C1 resin.

 

[Woodonglass]

Re: 1986 Skeeter Starfire 90 Resto.

Yer makin progress!!!! Ain't werkin with resin FUN!!!!!!!!!!!!!!!!!!!!!!!! By the time you get this boat dun you'll have it figgerd out and be a pro!!! The Lernin Kerv iz whut makes it so fun in the first place.

Keep on keepin on

I'm just sayin...

 

[RobbyA]

Re: 1986 Skeeter Starfire 90 Resto.

Keep up the good work and you will be teaching me before you know it!

 

[JAFO1]

Re: 1986 Skeeter Starfire 90 Resto.

Post the code off the pail and I can tell you what it is.

Being LOW VOC means nothing other than it meets the MACT emission regulations for the industry using it, marine is different than RV, and the corrosion industry is different than these two.

Any GP resin purchased from C1 in pails would normally be a MACT compliant product (low VOC), the gel time, which has little to do with quality, can vary a great deal. They may have several gel times for you to choose from, 20 minutes and 35 minutes are the two normal ranges for products sold and labeled as C1 resin.

Rear Admiral RVR,
C1-FV C1-1001-25

I am pretty sure, all failure of that 'soft batch' was my fault. I was trying to hurry too much and didn't mix it and or cat ratio it well. I'd still like a little more working time. The outside temps are 10 to 15 degree's cooler and the last two batches worked perfect. I like the idea of keeping the resin cool. In the house (after the family heads out for the day!) or whatever I can work out.

W&G, yes, actually it is! I don't like grinding worth a dang, but I am thoroughly enjoying working on this boat. I had no idea I would enjoy it so much.

Robby,
Not sure I'm qualified to teach, but I'd be happy to help you screw it up!

 

[ondarvr]

Re: 1986 Skeeter Starfire 90 Resto.

The 25 at the end indicates it has 25 minute gel time at 77F. For about every 15 degrees F you go up the gel time will be cut in half. Every 15F below 77 will about double the gel time.

This only approximate change, each formula and catalyst will be slightly different.

 

[JAFO1]

Re: 1986 Skeeter Starfire 90 Resto.

The 25 at the end indicates it has 25 minute gel time at 77F. For about every 15 degrees F you go up the gel time will be cut in half. Every 15F below 77 will about double the gel time.

This only approximate change, each formula and catalyst will be slightly different.

Thank you so much! I knew there had to be a formula like this, but haven't run across it.

For each of those drops or raises in temp, does one adjust the cat ratio accordingly?

 

[ondarvr]

Re: 1986 Skeeter Starfire 90 Resto.

--------------------------------------------------------------------------------




Liquid Properties Data Sheet Cook Composites and Polymers
P.O. Box 419389
Kansas City, Mo 64141-6389
816.391.6000


--------------------------------------------------------------------------------



CODE C1100125
DESCRIPTION UNSATURATED POLYESTER
TRADE NAME STYPOL C1-1001-25

SHELF LIFE (DAYS) 090
NVM OVEN SOLIDS
VISC, BROOKFIELD 425 - 575



GEL TIME 23.5 - 26.5 1.25% DDM9
PEAK TEMPERATURE 260.0 - 310.0
GEL TO PEAK TIME 55.0 - 58.0
AS FOLLOWS
LVF #3 77DF
REPORT











Refer to the appropriate Data Sheet for Product Properties; safety information and application recommendations. Refer to the MSDS for handling precautions. MSDS's are available on our website ( http://www.ccponline.com ). Please read the Disclaimer.

 

[JAFO1]

Re: 1986 Skeeter Starfire 90 Resto.

--------------------------------------------------------------------------------




Liquid Properties Data Sheet Cook Composites and Polymers
P.O. Box 419389
Kansas City, Mo 64141-6389
816.391.6000


--------------------------------------------------------------------------------



CODE C1100125
DESCRIPTION UNSATURATED POLYESTER
TRADE NAME STYPOL C1-1001-25

SHELF LIFE (DAYS) 090
NVM OVEN SOLIDS
VISC, BROOKFIELD 425 - 575



GEL TIME 23.5 - 26.5 1.25% DDM9
PEAK TEMPERATURE 260.0 - 310.0
GEL TO PEAK TIME 55.0 - 58.0
AS FOLLOWS
LVF #3 77DF
REPORT











Refer to the appropriate Data Sheet for Product Properties; safety information and application recommendations. Refer to the MSDS for handling precautions. MSDS's are available on our website ( http://www.ccponline.com ). Please read the Disclaimer.

Very nice. This is similar to my MSDS, but the MSDS doesn't have that part about the gel time.

I truly appreciate you taking the time to help me with this.

 

[ondarvr]

Re: 1986 Skeeter Starfire 90 Resto.

Adjust catalyst level 0.07
for each degree from 77?f.
If cooler than 77?f, add 0.07 up to a catalyst level of 3.0%.
Example#1: Temperature of gel coat is 70?f.
7 x 0.07 = 0.49 + 1.8% = 2.3%
if warmer than 77?f, subtract 0.07 down to
a minimum catalyst level of 1.2%.
Example #2: Temperature of gel coat is 85?f.
8 x (-0.07) = (-0.56) + 1.8% = 1.24%