Re: yogurt cups
Thanks for all of the great ideas. I think I'll try them all!
You can get graduated one oz. cups from hobby stores and from people who
work in hospitals. And I bet you can find a low cost mail order source.
I seem to recall seeing stuff like this at sciplus.com I think the
larger graduated cups from Glen-L will do as little as 2 oz., but it's
been awhile so I can't guarantee that.
If the containers are all the same, I've heard of the following trick:
put two cups together. Put in desired amount of one part (whichever part
is less). Place on level surface and mark fluid level on side of outer
cup. Now put in desired amount of other part and mark total level. Then
you can save the outer cup and put another cup in it to replicate. You
can do it the first time with something convenient like water.
Then there's always the sensitive electronic scale, possibly covered
with saran wrap (but be sure there is no tension in the wrap), and
hopefully with a tare button. Keep in mind that the weight ratio will be
a little different than the volume ratio. This is how I've seen it done
professionally. But the scales do get messy.
work in hospitals. And I bet you can find a low cost mail order source.
I seem to recall seeing stuff like this at sciplus.com I think the
larger graduated cups from Glen-L will do as little as 2 oz., but it's
been awhile so I can't guarantee that.
If the containers are all the same, I've heard of the following trick:
put two cups together. Put in desired amount of one part (whichever part
is less). Place on level surface and mark fluid level on side of outer
cup. Now put in desired amount of other part and mark total level. Then
you can save the outer cup and put another cup in it to replicate. You
can do it the first time with something convenient like water.
Then there's always the sensitive electronic scale, possibly covered
with saran wrap (but be sure there is no tension in the wrap), and
hopefully with a tare button. Keep in mind that the weight ratio will be
a little different than the volume ratio. This is how I've seen it done
professionally. But the scales do get messy.
>Frank San Miguel wrote:
>I have a whole stack of yogert cups I've been saving to help me do
>small batches of epoxy. You know, you forgot to fill that one area,
>or glue that one little cleat.
>
>Only problem is I can't figure out how to mix epoxy in them. Anyone
>have a good strategy for accurate mixing small batches (less than 2
>oz) in yogurt cups?
>
>Thanks,
>
>Frank San Miguel
>Landenber, PA
>
Try using a balance beam calabrated for weight. Anything will do. I
use an 18" piece of wood with two nails drivin partway into the sides
at the middle as the 'axle.' Place a stop at one far end against
which to place your cup for the epoxy mix. Now to make
yourcalibration marks:
For System 3 the ratio is 1:4.3 by weight.
From the 'axle' I measured out 12.59 cm (or close) and placed
a 'resin' mark. The 'resin and hardener' mark is 18cm from the 'axle.'
The procedure is to place your cup against the stop, then balance the
beam using a weight so that the cup end just drops.
Next, place another weight equal to the amount of resin you think
you'll be needing centerline on the 'resin' mark. Nuts work real well
for this because you can use their stop sign shape to line them up
easily right on centerline.
Fill the cup with resin until it just drops.
move the resin weight to the 'resin hardener' mark, again, on
centerline.
Fill the cup with hardener until it just drops.
You're done.
It works great. No more calibrating cups. No more hoping the
calibrated cups you bought at a premium are indeed calibrated
correctly. The only drawback is that you have to pour sloowwwww. But
for small amounts . . .
For other systems you're on your own for figuring the calibration
marks! (I got my numbers from a little article in a Traditional Small
Boat Association newsletter some years back)
John O'Neill
use an 18" piece of wood with two nails drivin partway into the sides
at the middle as the 'axle.' Place a stop at one far end against
which to place your cup for the epoxy mix. Now to make
yourcalibration marks:
For System 3 the ratio is 1:4.3 by weight.
From the 'axle' I measured out 12.59 cm (or close) and placed
a 'resin' mark. The 'resin and hardener' mark is 18cm from the 'axle.'
The procedure is to place your cup against the stop, then balance the
beam using a weight so that the cup end just drops.
Next, place another weight equal to the amount of resin you think
you'll be needing centerline on the 'resin' mark. Nuts work real well
for this because you can use their stop sign shape to line them up
easily right on centerline.
Fill the cup with resin until it just drops.
move the resin weight to the 'resin hardener' mark, again, on
centerline.
Fill the cup with hardener until it just drops.
You're done.
It works great. No more calibrating cups. No more hoping the
calibrated cups you bought at a premium are indeed calibrated
correctly. The only drawback is that you have to pour sloowwwww. But
for small amounts . . .
For other systems you're on your own for figuring the calibration
marks! (I got my numbers from a little article in a Traditional Small
Boat Association newsletter some years back)
John O'Neill
--- Inbolger@yahoogroups.com, "Frank San Miguel" <sanmi@y...> wrote:
> I have a whole stack of yogert cups I've been saving to help me do
> small batches of epoxy. You know, you forgot to fill that one area,
> or glue that one little cleat.
>
> Only problem is I can't figure out how to mix epoxy in them. Anyone
> have a good strategy for accurate mixing small batches (less than 2
> oz) in yogurt cups?
>
> Thanks,
>
> Frank San Miguel
> Landenber, PA
Careful there. For System Three anyway, the volume ratio is 2:1, but the
weight ratio is 100:44.
Roger
derbyrm@...
http://derbyrm.mystarband.net
weight ratio is 100:44.
Roger
derbyrm@...
http://derbyrm.mystarband.net
----- Original Message -----
From: "mat_man22" <mat_man@...>
> Hi Frank
>
> The price of digital scales has come alot in the past few years.
> They will let you zero out the cup weight (tare).
Hi Frank
The price of digital scales has come alot in the past few years.
They will let you zero out the cup weight (tar).
Best of luck
Mat
The price of digital scales has come alot in the past few years.
They will let you zero out the cup weight (tar).
Best of luck
Mat
Pumps
...... Anyone have a good strategy for accurate mixing small batches (less than 2 oz) in yogurt cups?
Thanks,
Frank San Miguel
Landenber, PA
[Non-text portions of this message have been removed]
...... Anyone have a good strategy for accurate mixing small batches (less than 2 oz) in yogurt cups?
Thanks,
Frank San Miguel
Landenber, PA
[Non-text portions of this message have been removed]
I routinely use paper coffee cups for small batches using the West
mini pumps, no problem,
With manufactureres that don't offer pumps, just buy two identical
liquid soap dispensers from your local dollar store, keep one for
resin and the other for hardener et voila, field expedient epoxy
pump system. Easy for 2:1, 1:1, even 3:1. Count the pumps out loud
to avoid improper mixing.
Great for those small batches.
Bruce Hector
Sipping a fine "Harper Valley IPA" from the Fredericksburg Micro
Brewery with Chuck the Duck in Harper, Texas, trying to get up the
anbition to head for the galley and start the chicken oreganati for
tonights dinner as the sun sets in the deep, warm, hill country of
Texas.
mini pumps, no problem,
With manufactureres that don't offer pumps, just buy two identical
liquid soap dispensers from your local dollar store, keep one for
resin and the other for hardener et voila, field expedient epoxy
pump system. Easy for 2:1, 1:1, even 3:1. Count the pumps out loud
to avoid improper mixing.
Great for those small batches.
Bruce Hector
Sipping a fine "Harper Valley IPA" from the Fredericksburg Micro
Brewery with Chuck the Duck in Harper, Texas, trying to get up the
anbition to head for the galley and start the chicken oreganati for
tonights dinner as the sun sets in the deep, warm, hill country of
Texas.
I have been using them and pre-marked the outside with
a permanent marker so I can pour in the liquid to that
portion. Only thing I have found is that epoxy seems
to eat through the permanent ink : )
Tim
tgrohrer(at)yahoo.com
--- Frank San Miguel <sanmi@...> wrote:
Do you Yahoo!?
Yahoo! Mail - More reliable, more storage, less spam
http://mail.yahoo.com
a permanent marker so I can pour in the liquid to that
portion. Only thing I have found is that epoxy seems
to eat through the permanent ink : )
Tim
tgrohrer(at)yahoo.com
--- Frank San Miguel <sanmi@...> wrote:
> I have a whole stack of yogert cups I've been saving__________________________________
> to help me do
> small batches of epoxy. You know, you forgot to
> fill that one area,
> or glue that one little cleat.
>
> Only problem is I can't figure out how to mix epoxy
> in them. Anyone
> have a good strategy for accurate mixing small
> batches (less than 2
> oz) in yogurt cups?
>
> Thanks,
>
> Frank San Miguel
> Landenber, PA
>
>
Do you Yahoo!?
Yahoo! Mail - More reliable, more storage, less spam
http://mail.yahoo.com
I have a whole stack of yogert cups I've been saving to help me do
small batches of epoxy. You know, you forgot to fill that one area,
or glue that one little cleat.
Only problem is I can't figure out how to mix epoxy in them. Anyone
have a good strategy for accurate mixing small batches (less than 2
oz) in yogurt cups?
Thanks,
Frank San Miguel
Landenber, PA
small batches of epoxy. You know, you forgot to fill that one area,
or glue that one little cleat.
Only problem is I can't figure out how to mix epoxy in them. Anyone
have a good strategy for accurate mixing small batches (less than 2
oz) in yogurt cups?
Thanks,
Frank San Miguel
Landenber, PA