USAFsparkchaser Posted February 9, 2021 Share Posted February 9, 2021 So am new to AB, I have a Grex that came with a .3 MM nozzle. I have decided I would use MMP paints, and Vallejo metallics. The thing I am not happy with is either the MMP, and Vallejo metallic black primer. Neither seems to shoot very good. After thinking of switching to Stynalrez and watching YouTube I have seen it’s recommended to use .5 or above needle. So is the .3mm the problem. My pressure is around 20 and have gone up to 30 when trying to prime. Quote Link to post Share on other sites
RichardL Posted February 9, 2021 Share Posted February 9, 2021 If your surface doesn't have too many flaws that would require sanding to fix, then you can try Vallejo acrylic-polyurethane primer. Never had any issues spraying it through my 0.2mm nozzle at 18-20 psi. You can also try AK 3rd generation acrylic primer. Quote Link to post Share on other sites
USAFsparkchaser Posted February 9, 2021 Author Share Posted February 9, 2021 I just bought the AK primer. Would it be ok to just get the .05 mm nozzle. Quote Link to post Share on other sites
RichardL Posted February 9, 2021 Share Posted February 9, 2021 It's not really necessary in my opinion, but in general, a .5mm needle and nozzle will work great for spraying primer and clear coat. Quote Link to post Share on other sites
fulcrum1 Posted February 11, 2021 Share Posted February 11, 2021 I've shot the regular vallejo black primer with a .3 no issues. Ammo One Shot (same as Stynalrez) gave me an issue so I need to play around with it a bit more. I would personally use a junk kit and just keep practicing with it and the psi. Maybe look into retarder or thinner along with it. I was not impressed with MMP over vallejo primer. However, over Tamiya primer MMP was fantastic. Going to test out some more primer in the coming weeks. I did buy some conversion parts for my iwata to go .5 to try out. I've read the same thing about being more forgiving. Quote Link to post Share on other sites
RichardL Posted February 12, 2021 Share Posted February 12, 2021 1 hour ago, fulcrum1 said: Ammo One Shot (same as Stynalrez) gave me an issue Ammo One Shot gave me an issue also 😞 Quote Link to post Share on other sites
ElectroSoldier Posted February 13, 2021 Share Posted February 13, 2021 I use a .3mm nozzle to spray Stynalrez and its the one paint I never have a problem with. It dries quickly but I never have a problem spraying it at all. Quote Link to post Share on other sites
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