primer wont sand

[choptop]

Hey Zeig85, 15-20 C is 59-68 degrees F. I think you missed that like I did the first time I read it, I almost fell over. I do know that temperature and humidity make a difference on some paints. does endura have any ideas?

[hogwild]

notice i had it out side for 4 days, maybe it froze ?. i have it in shop with heat cranked  mabe it will harden with some luck.what should i use for second primer coat when i and if i get this stuff sanded

[hogwild]

went back to shop tonight and tryed sanding again , seems to be getting better . im now thinking it just needs to cure more.

[zieg85]

Time and temp is the big deal.  Did the epoxy call for an induction or sweat in time?  If it did and you didn't do it that would also cause it to be soft.  I have been in the paint field for 23 years, I have seen quite a bit

[HAULIN IT]

Hogwild, I'm concerned about the 24 Hrs. @ 58-68F, then put outside. These chemicals work best in more stable climate. If you were "on the edge" of 50F, as Zeig says "your in trouble". 24 Hrs. above curing is pushing it. It goes outside below freezing, nothing is curing at this point. Now back inside, if over 50 F it's thinking about curing again. Kinda like putting on only new underware & going out in the cold for a while & coming back in. It is better once your inside, but the damage may already be done. Good Luck, Lorne       

[Redneckchevy]

Dont think i could of put that any better lol .But how would he go about getting it off...Just curious lol cause im thinking Media blasting it.....or a nasty chemical striper.

[zieg85]

The epoxies I work with are fine if the temp is raised so it will finish curing (If the sweat-in or induction time) was followed if required.

[HAULIN IT]

Zeig, What company are you working with? Just curious who's got what going on. Thanks, Lorne

[zieg85]

I am a Technical Service Rep for The Sherwin-Williams Co.

[hogwild]

all this talk is over my head, primer i used is endura intermix 3-1. check out their web site and see what you think, endurapaint.com. going out side with nothing but underwear would not have mattered , today were i am from  , it is -39 deg celcius your balls freeze underwaer or not. they dont call it the great white north for nothin !. no induction time is required  can be top coated from 1 hr - to 14 days is what web site says

[HAULIN IT]

Hog, Your talking 40 degrees below freezing? WOW! How do you keep your house, garage warm? That's a long way from comfortable. I bet your vehicles make all kinds of odd noises & funny habits when you start out in the mornings. I don't think anything  short of a polar bear would like that weather. Good Luck with your project, Lorne

[hogwild]

haulin , real good heaters, and yes 40 below 0 not a misprint . its not always this cold , normal is about minus 10

[zieg85]

all this talk is over my head, primer i used is endura intermix 3-1. check out their web site and see what you think, endurapaint.com. going out side with nothing but underwear would not have mattered , today were i am from  , it is -39 deg celcius your balls freeze underwaer or not. they dont call it the great white north for nothin !. no induction time is required  can be top coated from 1 hr - to 14 days is what web site says

Talking in general terms...  Items I picked up on the data sheet that leads me down the thought process.  This is a unique primer system with the long potlife versus fast cure tendencies if the directions/temps are followed.  Typically when there is a statement about minimum temp. of the paint when mixed that is around the minimum required to cure.  Also this is a primer designed to go on fairly thick.  If it is applied at a thinner film, like a sealer would be, cure would also be slowed down.  If it were me I would give it time to cure when the temps get more in line it should cure.  Sandability is a good test for cure as well as a strong solvent to rub the coating lightly to see if it is still soft.  My $.02

[loudnlow87]

ultimately temp shouldnt matter terribly for epoxy primer; it cures by a chemical reaction, not air drying. ive sprayed epoxy primer inside then had to put it outside, maybe 25F and light hail. i could still smell it curing a week later but it was fine. and i drive it everyday.

[hogwild]

well some time has passed now ,and it appears i set off a false alarm, primer just needed to be inside warm shop to cure more. it sands fine now. cold didnt seem to do anything but slow curing proses. thanks for your help & i am sure i will need more as project  progreses. painting a truck is deffenetly a learning process. how the%*$%*& do you spell proses