epoxy induction

shine

shine

Member
ok barry . one more time . i constantly see post that induction really isn't needed . i refuse to argue the point so here's another chance to explain it. they will not search for an answer .
 
For years our epoxy was a no induction and it still is, nothing has changed.Here is why we ask for induction.
30 minutes of induction will make the epoxy a little more child proof as far as forgiving with people spraying in not perfect conditions such as a shop at home.
Maybe air supply not up to par or lack of scfm or not real good air flow or unlike a good paint booth outside humidity may be a factor.
Is this a cure all for the above problems? NO but it does make the epoxy a little more forgiving.
Second type of induction where i state 4 hours or overnight is situations where the epoxy is going to be exposed to UV's, such as tiim or mirrors as a final coat, in my testing the 4 hour induction eliminates the effects of humidity with the UV absorbers to give it longer life.
Most restroration shops that have used it for years, do not induce.
 
Great explanation.
I generally let it induce while I am masking and prepping the vehicle. However if I didn't mix enough the next batch is not induced. I have never had a problem doing it this way.
The only time I ever had issues was when spraying white epoxy and getting snow blind so that I was putting it on way too heavy. Had a few craters that day. LOL
 
I will NEVER forget the first batch we put the stickers on the top to induce 30 minutes, oh the crap hit the fan, inside a month as our shops that had been using it would see the sticker and call the tech line, normal call was tell me you did not change the epoxy.
Had to have been 200 or so calls or seemed like it anyway.
 
Well, there is at least one site out there ( I can't remember the address) that had a bunch of info about epoxy and said that one way you could tell the high quality stuff was by lack of induction requirement. So maybe some guys have seen this and got concerned.
 
Tell me how it can sit mixed & not turn to stone & smoke?
The clear marine stuff i got with tropical hardener if mixed and left more then 1/8" thick gets hot.
I poured some in something 3/4"thick once and it went over 300F & smoke in approx 30 minutes.
5 minute hardware store stuff i mixed in solo cup once smoked & melted cup in seconds. Caution.
Pool stuff i used said induce but down here it started thickening in less then suggested induce time.
 
For me , the more why to do something along with the results of if you do or don't that I learn, the better to be inspired to do it.
Using spi epoxy the best ways possible does require more planning & effort than shooting some cheap quick dry stuff. While we all can't do everything the best way every time, it's not too hard to add at least 1/2 hr induction time into your schedule the majority of the time.
Are you the kind of person that takes advantage of knowledge and planning to up your results level or do you go through life half assing stuff. Anytime you can help avoid having to experience an issue, the better. But if something works good skipping a step, that's cool too.

Eddie, I have used mixed epoxy put back in a sealed container & kept inside my house for temperature control as long as 4 days later after stirring in some reducer.
 
I gabeesh. Shine nailed it. I'm thinking resins, now how they differ is another thread.
For days i've been thinking (as i swim laps) we need a Let's Talk Epoxy sticky.
 
My concern is will all epoxy, regardless of the manufacturer ultimately fade, from be exposed to the elements, even if UV light doesn't directly attack it? I painted some truck rims with SPI epoxy a few years back, epoxy held up well, but faded out in about a year. Will it ultimately fade on chassis, and just take longer?...like 5-10 yrs down the road will it be chalked out? I'm thinking of going over the epoxy with matte black.....
 
Not true if frame its will age but not fade aka blush.
The cheby and ford i did frames 20 21 years ago and still look like i just did it.
Wheels blushed because it was high humidity when you sprayed them and you did not induce for 4 hours.
 
Barry,
My second-in-line project car is sitting out the side of the house with a lot of surface rust on the roof. If I induce the epoxy for a good long period, would unprotected by any top coats epoxy on the roof be a good coating for the next year?
 
Inducing some as I type, one thing I always seem to forget but know I've read it before. At what time frame do you leave open or cover when inducing?
 
I never cover when in painters pail unless planning to leave overnight, than i either set round gallon can on the quart painters pail or a piece of cardboard and set quart can of paint on it.
 
I need to play around with induction more, it seems I'm always just mixing and spraying with great results. It did fade on truck rims, but held up quite well, just dulled out. I loaded 3 heavy coats on my chassis and I can't remember if I induced it, I'd say probably not...fingers crossed!
 
Is there any reason to use matte black paint? If we let the epoxy induce, what's the point of using matte black? Epoxy is more durable. I can also get the epoxy to lay out quite nicely. Is the matte black even smoother?
 
danp76 said:
Is there any reason to use matte black paint? If we let the epoxy induce, what's the point of using matte black? Epoxy is more durable. I can also get the epoxy to lay out quite nicely. Is the matte black even smoother?
Click to expand...

I think it is. I shot my braces with the matte black. They came out with a little less gloss but they also seem to be have a little less texture to me.

John
 
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