TearsOfTheRaven Posted July 21, 2014 Share Posted July 21, 2014 I purchased this can of spray primer the other day(after hearing good things about halfords primers), and when i tested it this evening it performed horrendously. uneven coverage and grainy, you name it. am i using the wrong kind of spray or am i using it wrong? http://i.imgur.com/qeFkO3H.jpg Back to top Quote MultiQuote Link to comment https://bolterandchainsword.com/topic/294052-primer-problems/ Share on other sites More sharing options...
JeffTibbetts Posted July 21, 2014 Share Posted July 21, 2014 I purchased this can of spray primer the other day(after hearing good things about halfords primers), and when i tested it this evening it performed horrendously. uneven coverage and grainy, you name it. am i using the wrong kind of spray or am i using it wrong? http://i.imgur.com/qeFkO3H.jpg Back to top Quote MultiQuote Never tried that one myself but I've also heard good things about it. Maybe we could see your results? From your description it sounds like it just wasn't shaken well enough or something. I've started heating up my cans in warm water after reading all about it and it seems to help with smooth coverage. Temperature and humidity can have a huge impact as well. But mainly, they say to shake it for AT LEAST 2 minutes. It really honestly feels like forever when you're actually doing it. Set a timer or something. And longer is better. It's quite possible you did everything right and just got a bum can. It's quite lame to learn that only once you spray it out, but I don't know of any good way to test it unless you keep some spare model/bits/sprue about and are more patient than I am. Link to comment https://bolterandchainsword.com/topic/294052-primer-problems/#findComment-3751692 Share on other sites More sharing options...
TearsOfTheRaven Posted July 21, 2014 Author Share Posted July 21, 2014 How long do you heat the can for? Link to comment https://bolterandchainsword.com/topic/294052-primer-problems/#findComment-3751715 Share on other sites More sharing options...
JeffTibbetts Posted July 21, 2014 Share Posted July 21, 2014 I just leave it in warm water for 5 to 10 minutes. I pop it in and walk away to do something else for a little while. Link to comment https://bolterandchainsword.com/topic/294052-primer-problems/#findComment-3751754 Share on other sites More sharing options...
Stercus Posted July 21, 2014 Share Posted July 21, 2014 I've not tried the black one, but that brand of grey and white acrylic primer have always been good for me. You may just have a dud can as mentioned above,. Link to comment https://bolterandchainsword.com/topic/294052-primer-problems/#findComment-3752002 Share on other sites More sharing options...
Forté Posted July 23, 2014 Share Posted July 23, 2014 Shouldn't need any heating with the current UK weather. Lots of shaking (which you should always do with any spray anyway) and short bursts from about a foot or more away. I know the grey is really good by not tried their black. Link to comment https://bolterandchainsword.com/topic/294052-primer-problems/#findComment-3753912 Share on other sites More sharing options...
JeffTibbetts Posted July 23, 2014 Share Posted July 23, 2014 Shouldn't need any heating with the current UK weather. Lots of shaking (which you should always do with any spray anyway) and short bursts from about a foot or more away. I know the grey is really good by not tried their black. The heating is to get it actually warm in the can. I'm sure it's hot there, but the water in the sink is hotter, right? I've only done it a couple times myself, but scale modelers swear by it and they usually know what they're talking about. Link to comment https://bolterandchainsword.com/topic/294052-primer-problems/#findComment-3754001 Share on other sites More sharing options...
netminder69 Posted July 24, 2014 Share Posted July 24, 2014 Often, if it's grainy, you may be holding it too far away when you spray. Especially if you spray outside, if it's hot and/or humid (not sure which does it), the primer "cures" before it hits the model and you end up with that problem. Link to comment https://bolterandchainsword.com/topic/294052-primer-problems/#findComment-3754438 Share on other sites More sharing options...
Badaab Posted August 7, 2014 Share Posted August 7, 2014 Some primer tips: The paint is heavier than the propellant, so...-Try warming the bottom of the can before shaking it in a container of warm water. This is especially important if you're painting with a final finish paint and not primer, as the primer isn't as heavy as something like a gloss finish paint will be.-Shake the can for a minimum of a minute until the agitator inside the can sounds like its moving completely freely.General stuff:-Always keep the can upright when painting. This prevents the nozzle from clogging. I like to affix my models to a box I can fit my hand inside when painting, so I can spray the model without getting messy and also get it all in one go by turning the box rather than the can.-Spray about 10-12" from your model, and always keep the can moving to avoid overspray (which clogs detail- be more careful with plastic models and vehicles as they won't have the same depth of detail that something Finecast or metal will).-Never start or stop spraying in front of the target model- paint in even passes of the model. Yes, you'll waste more paint this way, but paint is much cheaper than a new model. Link to comment https://bolterandchainsword.com/topic/294052-primer-problems/#findComment-3768395 Share on other sites More sharing options...
Freakiq Posted August 7, 2014 Share Posted August 7, 2014 Don't spray models inside a box, better to use blue-tac to affix them to the outside of the box as the primer can "bounce" off the walls of the box and land as dried flakes on the models making them grainy as a result. Also, never start spraying at a model, spray next to the model and move the spray back and forth over the model. Link to comment https://bolterandchainsword.com/topic/294052-primer-problems/#findComment-3768433 Share on other sites More sharing options...
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