Slicksand and 2k primer questions

MX442

MX442

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This is my first real paint job. I have never used slicksand or Turbo 2K before. How many coats of each do you typically apply? How much to mix? Should I plan to mix the same quantity that I use for epoxy?

This may be a dumb question, but... Is the goal to sand it all off down to my epoxy foundation? Or keep an entire layer with no sand throughs?

After slicksand, how many coats of epoxy? Followed by how many coats of Turbo 2K?

Thanks.
 
well your question is all relative. it all depends on how much you need to correct on the car. slicksand is like sprayable bodyfiller or glaze. the whole idea is to build up thick so you can sand and get the panels all straight. you will need far more than epoxy. dont mix more polyester primer than you can spray in 10 min or so. it will suddenly kick off without warning and turn your gun into a brick lol. polyester i usually try to block as much off a possible just until your almost cutting into the epoxy or filler underneath. the less you have on the car the better. block with 120-180 then put 2 coats of epoxy or turbo over it, sand with 400-600 and your ready for base.
 
How many coats of turbo equal a coat of slick sand (or similar)? Then....how many coats of epoxy equal a coat of turbo? Would be a handy reference, assuming the person spraying sprays the same. Obviously you can adjust thicker or heavier.
 
Thanks for the quick response! I'll start with 2 coats and see where I'm at. I'll mix up 1.5 times my normal epoxy and see how far it goes.

So, turbo right over top of slicksand is OK? I thought I would have to seal it up with epoxy again.
 
no need to seal. 2k or epoxy can go right over polyprimer. i think in most cases i did 3-4 coats of polyprimer to get a decent build for me to block out irregularities. remember you will need a gun with a big tip. my sata poly primer gun comes with a 2.5.
 
Used about the same amount as epoxy, maybe I'm not going thick enough. So, I did 3 coats. 2.3 tip Vaper gun. Going right to turbo would save me time.
 
After having done a few cars with the epoxy, slicksand, turbo, epoxy seal, basecoat, clearcoat process, I would say first epoxy (black is best IMO) over bare metal or fiberglass, let that cure a few days, then block (150) it to see where your low/high spots are judging by the scratches left behind.. You can then determine how many coats you need in certain area. Putting 3-4 coats over the hole car could be a big waste of time and material. Here's a chart I made up for different materials based on conversations with Barry and Evercoat which might help you. Evercoat's superbuild primer is just that, high build, but sands like concrete IMO.
Another thing I've learned is when you are done blocking, spray more primer on it and sand with 4-600 instead of trying to up in grits on a panel that has already been blocked with 150 or 180.

materialtipmil/coatsanding difficulty
slicksand2.0+4-6ok to sand
featherfill1.7-2.22-4easy to sand
superbuild 4:12.0+6-8hard to sand
spi UC
1.4​
2.5-3
spi epoxy
1.4​
1-1.5ok to sand
spi turbo1.8 +3-5real easy to sand
 
Epoxy over poly primer is one of those things that goes both ways I think. Its technically not needed but I don't think it hurts either. I always used it over mine for two reasons, one being that the perfect paint job says to epoxy over filler, I always assumed and read this was essentially filler, and second I liked the contrast of color.

I always started sanding with 120 on poly, and switched to 180 when I felt like I was about half way done. I usually then made a once over with 220 on a hand pad looking for spots that were going to be an issue that I might have missed. If there was something that was missed its generally more acceptable to place a little filler over poly than it is 2k, so the time to fix any last little mishaps would be at this point.
 
I blocked out the slicksand, corrected more shape issues with filler. Last night I sprayed one coat of epoxy to seal it all up again. I was planning on moving to Turbo2K today. Yet, I still have quite a few of these small pinholes where there is filler. Will the Turbo2k fill these, or just bridge over? I feel that I cause more damage trying to apply Dolphin glaze and sand it out.
 
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