Using stale resin

[kmoose]

If it's good and clear it's probably ok but if it's milky or lumpy in any way it's toast.

[Basketcase]

Originally Posted by kmoose

If it's good and clear it's probably ok but if it's milky or lumpy in any way it's toast.

So I guess my question is, what is "toast" exactly? I've used 3 year old poly with crunchies on the cap that was thick as molasses and it "worked". Granted I only did that making custom car stereo stuff that did not need to be structural. What happens to it? What properties does it lose or gain when it gets old. Obviously if you add mekp to it, it will still harden but clearly the end product must be deficient in some way. I'd just hate to toss 3 gallons of vinyl ester when maybe I could use it to make parts that are not as crucial as others.

[Spidercrab]

Originally Posted by Basketcase

So I guess my question is, what is "toast" exactly?

mr basketcase your name is da meening of "toast" which also meens kaput, shot, fried, and on & on & on
ka·put
kəˈpo͝ot,käˈpo͝ot/Submit
adjectiveinformal
broken and useless; no longer working or effective.
synonyms: broken, malfunctioning, broken-down, inoperative;

in otha words da glass juice is shit

sam

[gw204]

Somewhere I have a response from U.S. Composites on this very subject. If I remember correctly they stated that as long as the resin wasn't lumpy or gelled, it should be OK. They also mentioned that the MEKP usually goes bad before the resin, and a quick way to check it was to vigorously shake it and see if it kept bubbles.

Mix the resin thoroughly and run a little test batch to see what happens. If it cures properly, I wouldn't hesitate to use it on little, non-critical parts. I did that once and my test batch kicked off just fine, but when I laminated with it, the part didn't cure until I set it in the hot sun for several hours.

[gofastsandman]

Originally Posted by gw204

Somewhere I have a response from U.S. Composites on this very subject. If I remember correctly they stated that as long as the resin wasn't lumpy or gelled, it should be OK. They also mentioned that the MEKP usually goes bad before the resin, and a quick way to check it was to vigorously shake it and see if it kept bubbles.

Mix the resin thoroughly and run a little test batch to see what happens. If it cures properly, I wouldn't hesitate to use it on little, non-critical parts. I did that once and my test batch kicked off just fine, but when I laminated with it, the part didn't cure until I set it in the hot sun for several hours.

I was told the same by USComp.

MEK is critical obviously.

[pelican]

Originally Posted by gofastsandman

I was told the same by USComp.

MEK is critical obviously.

https://en.wikipedia.org/wiki/MEK


MEK is a solvent,NOT a "kicker"


https://en.wikipedia.org/wiki/Methyl...etone_peroxide

MEKP is a "kicker"

big difference....

[gofastsandman]

Originally Posted by pelican

https://en.wikipedia.org/wiki/MEK


MEK is a solvent,NOT a "kicker"


https://en.wikipedia.org/wiki/Methyl...etone_peroxide

MEKP is a "kicker"

big difference....

Acetone and ATF tests just under Kroil as a penetrant.

Have the Chicken Heads in Holly Hill not turned you on to this
wonderful lubricant yet?

Most have fake blonde hair. The result of bad or old peroxide.
You shake them and get no bubbles. You can bang them all night long and they
may froth at the mouth. Have you found the Orbit Motel?

Glue Products is just around the corner. I`ve known Charlie for over 20 years.
When I buy resin, the kind folks at the counter put some kicker up.
With many free stir sticks in my pails.





What is the dwell angle of a `77 Saab turbo 2.0?
Initial timing?
Final?