Ron and others,
No doubt about it. Calibrate your electric scale and check often.
I have an old triple beam (like in chemistry class years ago, yea, I can
still use a slide rule too) and I calibrate it at least once a month due to
client drips and required gummy clean ups. I use the squeeze bottles from
Aircraft spruce for the resin and hardener (throw away after a year) and we
still get messy.
I don't have much use for the pumps, but if you are doing a Classic wing or
Long Eze from scratch in mid summer, they work great for the couple of weeks
you need one. Then they need a complete clean out.
My two cents thrown on too.
Regards,
Bud Yerly
--------------------------------------------------
From: "rparigoris" <rparigor@suffolk.lib.ny.us>
Sent: Sunday, December 21, 2014 8:44 PM
Subject: Europa-List: Using a digital scale for measuring Epoxy
> <rparigor@suffolk.lib.ny.us>
>
> Hi Group
>
> I just want to make a quick comment on using a Digital scale to measure
> Epoxy:
> Don't absolute put trust in them without verification!
>
> I have a few scales, and sometimes they get out of calibration when
> pouring Epoxy or Hardener slowly.
>
> I'm not talking about an absolute calibration with a standard (which I do
> once in a while), I'm talking about the "zero" calibration changing during
> weighing.
>
> What I do prior to mix, I make sure I have "two" empty mixing cups (with
> mixing sticks) that weigh exactly the same.
>
> I then zero out a cup with mixing stick.
>
> Then pour Epoxy, switch cups to make sure still zeroed. If not than rezero
> and make Epoxy adjustment.
>
> Then add Hardener, switch cups to make sure still zeroed. If not then
> rezero and make Epoxy adjustment.
>
> Mixing stick is absolutely needed for Redux mix, I find it helpful if you
> overdid Aeropoxy Epoxy.
>
> My two cents.
>
> Ron Parigoris
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=435985#435985
>
>
>
|