mix and matching different epoxies

northerncat · 05-05-2008, 04:49

ok i have a litre of epiglass resin which is a 4-1 ratio do you reckon i can use my fgi hardener 5-1 ratio at the 4-1 ratio to use up this resin?
sean

GordMay · 05-05-2008, 04:55

No - not a good idea.

Wotname · 05-05-2008, 05:42

No, but you should be able to buy epiglass hardener separately (if they package it in a small enough quantity) - its been awhile since I bought any Epiglass products

**David M** · 05-05-2008, 09:23

You want to mix different brands? That is not a risk worth taking. There is too great a risk of chemical incompatibilities.

Efraim · 05-05-2008, 11:06

Nope not a good idea. I've never tried it, (who would?), but I'm pretty sure you'd be wasting both resin and hardener if you did.

hellosailor · 05-05-2008, 14:19

I wouldn't try mixing them UNLESS the vendors could both tell you what the hardener really was (the actual chemical) and the two were actually the same chemical, in the same concentration or one close enough to work.

**knottybuoyz** · 05-05-2008, 15:41

I'm always inclined to experiment. I'd do up a small batch and stand back!

Ya never know what'll happen!

Alan Wheeler · 06-05-2008, 01:25

The epoxy resin is normally all the same stuff. It is the hardener that is different and unique to the manufacturer. I would try a small amount as a trial, at the hardener mix ratio of 5:1 and see what happens. DO NOT mix different hardeners.
Oh and hardeners for epoxy paints don't work in Resin nor the other way around.

05-05-2008, 04:49	#1
northerncat Registered User Join Date: Aug 2006 Location: cairns australia Boat: now floating easy37 Posts: 636	mix and matching different epoxies ok i have a litre of epiglass resin which is a 4-1 ratio do you reckon i can use my fgi hardener 5-1 ratio at the 4-1 ratio to use up this resin? sean

05-05-2008, 04:55	#2
GordMay Registered User Join Date: Mar 2003 Location: Thunder Bay, Ontario - 48-29N x 89-20W Boat: C.L.O.D. (Cruiser Living On Dirt) Posts: 12,576	No - not a good idea. __________________ Gord May ~~_/)_~~ (Gord & Maggie - "Southbound") "If you didn't have time/$ to do it right in the first place, when will you get the time/$ to fix it?"

05-05-2008, 05:42	#3
Wotname Registered User Join Date: Jan 2008 Location: Perth, Australia Boat: Van DeStat Super Dogger 31' Posts: 1,250	No, but you should be able to buy epiglass hardener separately (if they package it in a small enough quantity) - its been awhile since I bought any Epiglass products __________________ All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence

05-05-2008, 09:23	#4
David M Moderator Moderator Join Date: Sep 2007 Location: San Francisco Bay Boat: research vessel Posts: 4,660	You want to mix different brands? That is not a risk worth taking. There is too great a risk of chemical incompatibilities. __________________ David Where land ends life begins.

05-05-2008, 15:41	#7
knottybuoyz Moderator Moderator Join Date: Nov 2005 Location: Canada Boat: Bateau.com TW28 Modified Posts: 2,341	I'm always inclined to experiment. I'd do up a small batch and stand back! Ya never know what'll happen! __________________ Yours Aye! Rick ~^~^~^^~^~^~^~^~^~^~^~~^~^~~^~^~^^~~^~^ "If it breaks, make it stronger." If it's not broke, try harder!" Author unknown.

05-05-2008, 11:06	#5
Efraim Registered User Join Date: Sep 2006 Location: Toronto Posts: 93	Nope not a good idea. I've never tried it, (who would?), but I'm pretty sure you'd be wasting both resin and hardener if you did.

05-05-2008, 14:19	#6
hellosailor Registered User Join Date: Apr 2006 Posts: 3,993	I wouldn't try mixing them UNLESS the vendors could both tell you what the hardener really was (the actual chemical) and the two were actually the same chemical, in the same concentration or one close enough to work.

06-05-2008, 01:25	#8
Alan Wheeler Registered User Join Date: Dec 2003 Location: Marlborough Sounds. New Zealand Boat: Hartley Tahitian 45ft. Leisure Lady Posts: 8,042	The epoxy resin is normally all the same stuff. It is the hardener that is different and unique to the manufacturer. I would try a small amount as a trial, at the hardener mix ratio of 5:1 and see what happens. DO NOT mix different hardeners. Oh and hardeners for epoxy paints don't work in Resin nor the other way around. __________________ Wheels For God so loved the world..........He didn't send a committee.

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