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Nov 23, 2021 19:24:41 GMT
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ive painted a strut brace, and the process was
clean off allold paint, then panel wiped it.
scotched it
then 2 coats of etch primer from a can, left it 10 mins between coats
then 10 mins later some high build
then left for a day, and painted in 2k white.
2 days later, i put my nail into it and i can scratch it off
is that normal as in its not set right or is there soemthing wrong?
thanks
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Nov 23, 2021 19:49:19 GMT
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When did you do it? The temperature and dew point haven't been conducive to painting ay home recently.
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Nov 23, 2021 19:51:49 GMT
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I just use 2k straight onto the clean, abraded surface. I have fence posts, gates, suspension parts, decorative windmills and other stuff done like that. Mix with a generous amount of activator and apply by brush  |
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Nov 23, 2021 20:12:19 GMT
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did it the other night, i heated it up first with a heat lamp, then painted it. I have had it on my radiator for the last two days at home too, do you think its the thinners etc in the paint needing to evaporate before i have painted over it? the scratch goes down to the metal with my nail.
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Nov 23, 2021 21:16:29 GMT
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strip it redo it put a bit more activator in 2 to 1 mix
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Nov 23, 2021 21:47:58 GMT
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thanks, why i am asking is I'm doing a mini, and this was a bit of a test for it before i painted it.
its having the filler work done now, and its in etch primer, i need to make sure its right as ive stripped the car of paint 2 times now!
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Nov 23, 2021 22:55:40 GMT
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Strip it again I mix 3to 1 or 2to1 here's one I done   |
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Nov 23, 2021 22:56:57 GMT
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Is it proper 2k, not isocyanite-free 2k? I've heard the latter can remain soft for months.
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Nov 24, 2021 10:03:53 GMT
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Hmg xsg 98 it's just normal 2k
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Nov 25, 2021 20:29:57 GMT
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oh ok, so its been on my radiator here inside for a few days and its hardened right up. So i think when ive been doing the mini in the past, it not get hot enough and the paint has stayed soft and solvents are still in it.
THe whole point of doing the strut brace was to learn for doing more on the mini... thanks!
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jgtr
Part of things
Posts: 270 
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Nov 26, 2021 23:40:58 GMT
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Isn’t etch primer old hat now? I used to epoxy primer on my last job, can be sprayed onto pretty much anything, plus it’s not 2k. I used Lechler which had enough build to be flatted back. It also has a recoat window of between 3 - 7 days.
What hardner did you use - I painted my van last winter and used express hardner, good down to 5 degrees.
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Last Edit: Nov 26, 2021 23:46:47 GMT by jgtr
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Nov 27, 2021 17:45:47 GMT
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Yes epoxy is my go to now it sticks well, doesen't really sink, brushes easily and just about anything goes over it. Only place I use etch is alloy.
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i have 2k epoxy, which one are you using
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jgtr
Part of things
Posts: 270
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Lechler 29107 epoxy is definitely 2K, jgtr were you meaning it's isocyanate free?
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jgtr
Part of things
Posts: 270
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Lechler 29107 epoxy is definitely 2K, jgtr were you meaning it's isocyanate free? Yep, meant iso-cyanate free |
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