MRP airbrushing problems

[Miiqqula]

I have a big problem with mrp paint. I've tried three times to paint the hood, and every time the same phenomenon is repeated, but at different places. I've tried the ultimate apex and h & s ultra and different size nozzles. I have also used various primers, but therefore the result is always the same



Does anyone have any information on what is causing that?

[Kevthemodeller]

It could be all manner of things, your best bet it to start at the beginning and work your way through the process.

First off check the paint is ok, you can do this by comparing the colour with another from MRP if you have it? If so try spraying that colour is the result the same? And/or try some different paint form say Tamiya, Mig, Mr Hobby etc, if any of these spray through the brush ok, then it's not really going to be the brush that's at fault or you..

Second and if none of the above works, it could be the airbrush/s, I use H&S and have no difficultly in spraying any paint through them. That said, some paint requires a bit more fiddling with, i.e. air pressure, nozzle size, trigger operation/opening etc. I also find water based acrylics (Mig, AK etc) harder to use and prone to tip dry, others like Tamiya, Mr Hobby, Zero paints, MRP etc are very easy, to use, clean and you get very consistent results.

MRP paints have two types, Aqua water based acrylic and acrylic pigmented Lacquer Paint, these require different thinners and cleaners, which have you got? If you use the wrong one it will give you all manner of issues. Your picture is showing what looks to be car bonnet, if you're using MRP car These you've got the latter.

MRP lacquer paint normally doesn't need thinning, but if you're thinning or cleaning the brush with the wrong cleaner is could be, reacting with the paint.

Your brushes, both are quality tools I've not used a apex (basically a Badger) but they work very well. Strip them, clean using the correct cleaning for the paint (see above) and check them for damage etc. Set the pressure to 15psi, using a test piece, card paper etc, try spraying, nice light coats and build up. They're hundreds of "how to" vids on Utube.

Lets us know how you get on.

[Miiqqula]

Both ab was stipped and cleaned fully. So they are ok. Used 0.35 and 0.20 nozzle, and diffrend pressure. Results are same. Mrp is airbrush ready lacquer based paints(Supra deep metallic blue) . Used cellulose thinner for cleaning. Other paints (tamiya, zero, gravity) with no issues. Only for mrp. I dont have other mrp paint, so i cant compare. And dont want thinning that paint. Allready thin (like alcald thin)
Have two bottles of them, and same problem in both.

Maybe it is monday version of the paint. Who knows

[Kevthemodeller]

Ok, try putting say 4 drops of paint into the colour cup, now add couple drops of thinner, mix and try, if it's better add one drop more until it's as you want it. It could be your paint is just older and lost a bit of it's thinner, I've had the same with other paints Falling that it's possible you've got a bad bottle I guess.

[Miiqqula]

I will give final shot for that, after stipped paint and primed the hood. If results are same, its thrash can time for that build (non ism 80 gb build).

[PlasticModeller]

Could it be the primer your using?

[Miiqqula]

Could it be the primer your using?

Tried with alclad and Ultimate primers. At least alcald should be useful for this paint.

[PlasticModeller]

You would think so but if you can get some MRP Primer then give it a go, I've never had a problem with there own primer with the paint.