International Scale Modeller

What ratio, if any, of Ultimate thinner to Stynylrez primer works best? I normally shoot at 20-25psi, .2 needle on a H&S Evolution. I also have a .4 needle set I can use if needed.

Thanks!

Use the .4 needle and spray at 30psi. DON'T THIN IT.

What Forbes said. I have a H&S Evo too and its great with the .4 needle, no thinning.

0.4 needle used at full pressure from my infinity I have no problems
I did have issue when I was using my diaphragm compressor, I had insufficient air supply. Now I'm using a compressor with a tank I have no more problems

You shouldn't be thinning acrylic primer. Lacquers you can go nuts on, but don't thin acrylic primers.
They don't need it. Adjust your needle and pressures.
The badger primer needs a .3 or larger needle/nozzle set and 20 or more PSI to spray. The instructions are on the bottle.

Yup point 4 or bigger needle, atleast 25psI and don't thin it.
I don't know what's in it but it doesn't like any type of thinners near it.

Thanks guys!

Thinning Stynlrez can affect its adhesion and self leveling properties. Best to just follow Badgers instructions for spraying it.

I guess I'm the minority that thins stynylrez on this thread. Being in a location/weather that is very hot I find it hard to use stynylrez when unthinned. With regards to thinning, I have consulted numerous times with the largest paint maker locally and they say that thinning can be done but the important factor is compatibility.

So here's my take. If you can manage it on a bigger needle and higher pressure without thinning then that would be the best option. If you really have trouble with using it unthinned like I do then there is a bit of hope. I use vallejo airbrush thinner since vallejo states that it can be used with their acrylic polyurethane primers. Stynylrez being acrylic polyurethane, I tested it and it worked fine for me. As I understand the vallejo thinner has some retarder in it which should also help with the tip dry and airbrush drying problem that will be common in hot areas.

Sadly after a few emails to badger, I have yet to receive a reply regarding compatible thinners. I have even used tamiya x20-A to thin stynylrez and it still worked.

I'm new to the badger primer so take this with a pinch of salt! I only have a .2 nozzle and am struggling with the grey primer. The black sprays fine. Anyway... I recall reading somewhere that Badger said, "if you must thin it, just use a little water."
I've yet to try it though, so be warned, lol!

A big nozzle really is a must for this primer but coincidentally I also find the black primer easier to work with compared to the grey primer.

Had no joy with any needle smaller than .4
Got .6 an .8 needled airbrushes and a gun, just for doing primers now.

I swapped out a .2 for the .4. Shot some black down as preshading without thinning and it seemed to work ok. Still had some tip drying as I was shooting a small volume of material. Having larger needle certainly made a difference.
Thanks again for the feedback.

I'm currently using Stynylrez primer in my Paasche Talon with the .38 needle and it sprays beautifully at around 22 psi. I really like the way that it levels out and will hide small surface imperfections.
Also, just to note, I do not thin the thinner, I am using it straight from the bottle. If there is any downside, it is that, if I leave the airbrush sitting for a little bit without spraying, the tip will tend to dry. This is easily resolved by a quick wipe of the needle with a cotton ear bud dipped in lacquer thinner.

jelliott wrote:I'm currently using Stynylrez primer in my Paasche Talon with the .38 needle and it sprays beautifully at around 22 psi. I really like the way that it levels out and will hide small surface imperfections.
Also, just to note, I do not thin the thinner, I am using it straight from the bottle. If there is any downside, it is that, if I leave the airbrush sitting for a little bit without spraying, the tip will tend to dry. This is easily resolved by a quick wipe of the needle with a cotton ear bud dipped in lacquer thinner.

Either my primer is bad or i'm just unlucky. Talon user also with a .66 nozzle and 30 PSI and struggling to spray the grey primer. Drys up quickly on the nozzle. Tried lower pressures, but then it will not spray at all.

I had to thin it with approximately 15% of distilled water to flow proper.

Another thing I noticed. If not cleaned right away, its hard to clean up. Had to break out my PPE and use Acetone to clean up the AB.

I find that the black and grey spray perfectly fine for me, no thinning, 30 psi through my Iwata with a .5 needle. However the white is considerably thicker. I'm curious as to whether this is everyones experience with the white, or perhaps badger just has a slight quality control issue resulting in some of the primers, some of the time, being overly thick. I found I can thin the white with windex (window cleaning fluid) and spray it, but it definitely loses some of the qualities that make the grey and black so great to use.