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Epoxy: Tips on using Raka fast and slow hardener *LINK*
By:Jack Sanderson
Date: 3/12/2003, 10:50 am

Folks,

I just ordered my epoxy and fiberglass from Raka and wanted a little feed back on my glassing plan as well as on the use of their 5oz cloth.

Questions on Epoxy Schedule

I am working in an unheated basement that stays at a constant 65 in the winter and early spring so I bought a combination of slow and fast hardener. My plan is to mix the two types of hardeners to speed up the curing process a bit for steps that are not time critical. On my last boat I sometimes had to wait 2 days to get a decent cure before moving on to the next steps. Any advice on ratios to use. I had planned the following.

Seal coat - half fast and half slow
Glassing – All slow or maybe 70/30 mix to give me more working time
Fill coats – All fast hardener
Hatches and coaming – 50/50 fast slow mix

Do I have to be more concerned with blushing when I use the fast hardener

Questions on the use of the 5oz glass

I was told to do a seal coat first and to be careful in my hand lay-up to not float the glass. Any tips on how not to float a lighter weight glass. I have some experience with 6oz so I assume it is not much different. I try to minimize the amount of epoxy in the wet out and then go back and touch up any sections that look in danger of starving the glass. This along with the seal coat seems to get a complete wet out without excess epoxy

Any other tips on using this glass. My plan is to use one layer inside and out and to do some strategic reinforcing around the cockpit with carbon tape.

Many Thanks,

Jack

Messages In This Thread

Epoxy: Tips on using Raka fast and slow hardener *LINK*
Jack Sanderson -- 3/12/2003, 10:50 am
Re: Epoxy: Tips on using Raka fast and slow harden
Jason Gray -- 3/12/2003, 9:06 pm
Re: Epoxy: Tips on using Raka fast and slow harden
Jack Sanderson -- 3/13/2003, 11:47 am
Re: Epoxy: Tips on using Raka fast and slow harden
David Hanson -- 3/12/2003, 4:12 pm
Re: Epoxy: Tips on using Raka fast and slow harden
Wes Tanaka -- 3/12/2003, 2:22 pm
Re: Epoxy: Tips on using Raka fast and slow harden
Don Flowers -- 3/13/2003, 12:53 pm
Resin on ice... that's nice!
Malcolm Schweizer -- 3/12/2003, 2:33 pm
Re: Resin on ice... that's nice!
Wes Tanaka -- 3/12/2003, 5:28 pm
Re: Resin on ice... that's nice! *Pic*
Paul G. Jacobson -- 3/13/2003, 12:13 am
Doesn't Raka fast hardener blush?
Brian Nystrom -- 3/12/2003, 12:57 pm
Yes, the Raka fast hardner does blush
Ken Sutherland -- 3/13/2003, 2:17 am
606 slow hardener *LINK*
Mark Normand -- 3/14/2003, 2:21 pm