On 8/9/2015 10:39 AM, John McCoy wrote:
Electric Comet wrote in news:mq5n6n$lb$1
@dont-email.me:

are you trying to say that the pump measures the volume as well

Yes, exactly. West System, for example, sells a pump set
that fits on their cans. The pump for the resin pumps 5
times as much, per stroke, as the pump for the catalyst,
thus you get the correct 5:1 ratio.

John



soooooo. How much in a single stroke? And what if you want a smaller
quantity?

On Sun, 9 Aug 2015 15:39:41 +0000 (UTC)
John McCoy wrote:

Yes, exactly. West System, for example, sells a pump set
that fits on their cans. The pump for the resin pumps 5
times as much, per stroke, as the pump for the catalyst,
thus you get the correct 5:1 ratio.

definitely would save time
seems to me that the big issue is to make sure your mixing is thorough

Leon lcb11211@swbelldotnet wrote in
:

soooooo. How much in a single stroke?

Enough.

And what if you want a smaller quantity?

Tough, you get what you get. Find something else that needs
glueing to use up the extra...

(in all seriousness, if you're using that sort of epoxy you'd
likely need much more than one stroke's worth of epoxy. If
you only need a little bit, get the two-tube 5 minute epoxy
from Home Despot).

John

Electric Comet wrote in news:mq825u$31o$1
@dont-email.me:

seems to me that the big issue is to make sure your mixing is thorough

That is more a problem for what you're doing, because the
product is clear. Most epoxies the catalyst is a darker
color than the resin, and you can see by the color that
it's well mixed.

John

Leon wrote:
On 8/9/2015 10:39 AM, John McCoy wrote:
Electric Comet wrote in
news:mq5n6n$lb$1 @dont-email.me:

are you trying to say that the pump measures the volume as well

Yes, exactly. West System, for example, sells a pump set
that fits on their cans. The pump for the resin pumps 5
times as much, per stroke, as the pump for the catalyst,
thus you get the correct 5:1 ratio.

John



soooooo. How much in a single stroke? And what if you want a smaller
quantity?

The pumps I have dispense 1 oz. per stroke. If I'm using 1:3, I pump one
resin, three hardener. If I want less, I do fractional strokes.

On Mon, 10 Aug 2015 14:44:48 +0000 (UTC)
John McCoy wrote:

That is more a problem for what you're doing, because the
product is clear. Most epoxies the catalyst is a darker
color than the resin, and you can see by the color that
it's well mixed.

that is a good feature
it could be a real problem for a large pour

for me it is not a big problem because of such small batches