Automotive clear coats

Has anyone used PPG Omni, either MC161 or the MC260 ?
How did it work out ??

Allan Perret

I use Omni MC161 with the slow hardener and have been pretty happy with it overall.

>I use Omni MC161 with the slow hardener and have been pretty
>happy with it overall.

Randy,
About how long does it take for the stuff to get reasonably tack free with the slow hardener??

Randy C

hi if you put the 2 pack primer and hardner that goes with the primer and once sprayed just to cover then streight away a gide coat of black onley a mist coat as this is a gide coat .Leave for 2 weeks to go rock hard ,Then block with 8oo grit and finer 1500 to de nib everything .Now bingo Spray your colour and 2 coats of clear fast leave for another week and denub with water 1500 and buff with a glaze .you will have a top finish .......john from n

Igor Panchenko

I use two stage coat pigment and than clear over it. Do not remember # of the Clear. It is @ my Work place, but work very good! Has valuable ingredients: UV protective. Little expensive but it worth it. I all so add some flex agent - recommend too,it makes clear coat stay flexible on sensitive areas, as between ribs. And does not make stiffer clear coat over years, and cause cracks. Use only same brand components. Very sensitive to moister in air system and in spray room environment. Be sure you use good filter. I use filter with silica helium grains.PPG all so sales spray cleaner for surfaces before you apply clear. "Fish eye" could be only because moisture, or surface contamination.I use two coats with dry sanding between. Smart Way - spray little beat on cleaned smooth surface of some thing like scrap of aluminum, before do big job - let 10 min around to see if every think goes right way.

Randy,

I use the slow hardner to get the stuff to flow in the cool weather we have. Takes about 2 hours to be tack free. 24 hours to handling and 48 hours from sand and buff.

I use medium and start sanding about 2 hours after I am finished painting. I hand rub so it makes it easier to buff. However I now have a machine I use so I will be able to wait a little longer. The reason I sand so quick is because of hand rubbing,if you wait too long its tough to do. This years NATS plane was almost lost to a mistake I made in hardener. I bought hardener for the winter and forgot about it. I waited till summer to paint. It was so fast the finish solvent popped and I had a heck of a time to try to hide this.

>Randy,
>
>I use the slow hardner to get the stuff to flow in the cool
>weather we have. Takes about 2 hours to be tack free. 24 hours
>to handling and 48 hours from sand and buff.

Thanks Randy,
Wish we had some of that cool weather here....We've had a particularly wet July 100 plus and raining most of the time...

Randy C

RAndy,

Hey, isn't it monsoon season there now? What did you expect?

Now imagine your current weather lasting for 9 months instead of 4 or 5 weeks and the temp being about 45°. Welcome to my world.