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Re: Epoxy: Ratios by weight *LINK*
By:Larry C.
Date: 3/23/2008, 9:14 am
In Response To: Epoxy: Ratios by weight (Will N)

: I just stumbled upon a method of getting the right proportion of Resin to
: Hardener that is unbeleivably simple. (Forgive me if this is redundant). I
: was stumbling around tryng to find all my grauated scales, and information
: sheets when I thought of this: West 105 Resin and 205 Fast Hardener. Ratio
: 5:1 weight and volume
: (207 hardener which more of us use is 3:1 volume 3.5:1 weight)
: I have a small digital postal scale, 1/10ths of an ounce.
: I first place an empty plastic cup on a paper plate on the scale then turn it
: on. It resets itself to Zero (ignoring the weight of the cup and the
: plate)
: Next I fill a pour a little resin into the cup. 2.5 ounces (weight)
: Then all I have to do is pour in .5 ounces of 205 Fast Hardener bringing the
: scale up to 3.0 ounces.
: Done!
: I haven't wasted any hardener that won't pour out of the hardner cup, I don't
: need to worry about the menicus and I haven't gummed up three-four plastic
: cups.
: for 3.5 to 1 ratio, just hit a multiple of 7. 7 ounces resin, 2 ounces
: hardener (look for 9 ounces ont he scale)
: 2.8 ounces .8 ounces of hardener. look for 3.6 etc....

: Will

After wasting countless ounces of epoxy trying to mix small batches, while building several boats, I came accross a great little digital scale at Harbor Freight Tools, for $12.99 It will read grams or ounces and it will zero whatever cup you put on it. I just lay a sheet of plastic cling wrap over the scale before placing the cup so drips dont get on the scale. This is one of the two best boat builders tools I have discovered, the other is the pizza cutter style fabric cutter for cutting fiberglass cloth. If the link does not work, Google Harbor Freight Tools and enter part# 93543 to find the scale.

Larry C.

Messages In This Thread

Epoxy: Ratios by weight
Will N -- 3/22/2008, 6:09 pm
Re: Epoxy: Ratios by weight *LINK* *Pic*
John D. -- 3/23/2008, 8:43 pm
Re: Epoxy: Ratios by weight
Mark Grieve -- 3/24/2008, 10:59 pm
Re: Epoxy: Ratios by weight
bjalgera -- 3/31/2008, 8:05 am
Re: Epoxy: Ratios by weight
John D. -- 4/1/2008, 1:05 am
Re: Epoxy: Ratios by weight
Mark Grieve -- 3/31/2008, 11:26 pm
Re: Epoxy: Ratios by weight *LINK*
Larry C. -- 3/23/2008, 9:14 am
Re: Epoxy: Ratios by weight
Will N to Go -- 3/23/2008, 11:27 am
Re: Epoxy: Ratios by weight
Don T -- 3/23/2008, 1:36 pm
Re: Epoxy: Ratios by weight
Mike Savage -- 3/23/2008, 12:31 pm
Re: Epoxy: Ratios by weight
John Monroe -- 3/23/2008, 4:59 am
Re: Epoxy: Ratios by weight
HenkA -- 3/23/2008, 2:13 am
Re: Epoxy: Ratios by weight
Steve Szarawarski -- 3/22/2008, 8:15 pm
Re: Epoxy: Ratios by weight
Glen Smith -- 3/22/2008, 6:39 pm