JeffTibbetts Posted June 2, 2014 Share Posted June 2, 2014 I have always had a problem with primer going on soft, if that makes sense. Wether it's from a can, brushed on, or airbrushed, I can always scrape it off easily. I don't think that's normal. I've tried various methods, like using multiple thin coats and whatnot but it just never seems to change. I often don't bother priming at all anymore. Has anyone struggled with this and found a solution? Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/ Share on other sites More sharing options...
Dosjetka Posted June 2, 2014 Share Posted June 2, 2014 Do you every wash the models before you prime them? Could have something to do with that, especially if they're resin. Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3704483 Share on other sites More sharing options...
Forté Posted June 2, 2014 Share Posted June 2, 2014 Not something I've come across. What are you priming and what primer are you using? Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3704569 Share on other sites More sharing options...
battle captain corpus Posted June 2, 2014 Share Posted June 2, 2014 Also where are you priming them comes to mind? Priming in high or low temperature environment can dramatically change the sprays properties. Here in the UK we have a quite moderate temp scale compared to other areas of the world, so I spray in the garage or out back in the garden. Leaving your spray cans in the area you are going to spray in, so they come to roughly the same temp is also handy. Spray cans after prolonged use will get cold also, so short sharp, precise bursts work best. There are some great vids on Youtube on undercoating. :) BCC Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3704583 Share on other sites More sharing options...
Dam13n Posted June 2, 2014 Share Posted June 2, 2014 I've had issues with primer not adhering properly before, so it wears off the plastic from finger-friction. A dose of varnish (purity seal) usually cures the problem though. The above advice is all good too of course. Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3704789 Share on other sites More sharing options...
Lucien Eilam Posted June 2, 2014 Share Posted June 2, 2014 Another thing to consider is your spraying distance. You need it to be wet when it hits the model, if you're too far away you'll just coat it in sticky dust. Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3704814 Share on other sites More sharing options...
JeffTibbetts Posted June 2, 2014 Author Share Posted June 2, 2014 Thanks for the tips, all. To answer some questions: I've tried all kinds of things but in this particular case... I am not in the habit of washing models up, but I don't really work with resin. Maybe I'll give that a try with a couple remaining bits. I've heard it a million times and, like a teenager, thought that would never happen to me. :P I'm using Vallejo Air black surface primer through an airbrush, indoors at normal room temp, at what I'd consider the perfect spray distance. I cut the primer about 60/40 with water being the lesser, as it seemed a bit thick to push through. I also upped the pressure on the gun to about twice what I normally spray at. My cheap airbrush isn't really cutting it for me and I think I need an upgrade, although I don't think that's the culprit here. When it does spray, it sprays just fine. It's going on damp but not soaking, and it's not too dry or dusty. In short, it looks great and I FEEL like I'm doing it right. It's just that after it dries, it acts just like any old paint on bare plastic. Isn't primer supposed to bite in and adhere better? Like, that's the whole point of it? :P Maybe I'm just expecting it to do something different than what it is. Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3704922 Share on other sites More sharing options...
Lucien Eilam Posted June 2, 2014 Share Posted June 2, 2014 In that case I'd suggest diluting it with acrylic thinner rather than water. Any "bite" is going to come from the medium/solvent, and water won't be doing anything in that respect. Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3704938 Share on other sites More sharing options...
JeffTibbetts Posted June 2, 2014 Author Share Posted June 2, 2014 In that case I'd suggest diluting it with acrylic thinner rather than water. Any "bite" is going to come from the medium/solvent, and water won't be doing anything in that respect. That's a great idea! I'll try that. Now I have to find some. Most art stores should have this, I should think. Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3704942 Share on other sites More sharing options...
Lucien Eilam Posted June 2, 2014 Share Posted June 2, 2014 Vallejo have their own brand of Model Air Thinner, so you'll probably be able to pick some up at the same place you got the primer. Any brand should be an improvement on water though. Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3704976 Share on other sites More sharing options...
battle captain corpus Posted June 2, 2014 Share Posted June 2, 2014 I don't have much experience with air brushes etc, but my gut instinct would be to use the same thinner brand as the paint (as Lucien Eilam has suggested) :) BCC Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3705004 Share on other sites More sharing options...
NovemberIX Posted June 2, 2014 Share Posted June 2, 2014 Also very little experience with Airbrushes/Airbrushed primers, but if it's still not working out, maybe switch over to primer in a can? I've never had any problems with Duplicolor Sandable black primer. Has great coverage, goes on thin, and doesn't seem to have a problem being handled. Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3705240 Share on other sites More sharing options...
Jeff Newton Posted June 2, 2014 Share Posted June 2, 2014 With the airbrush primer it needs 24-48 hrs to fully dry. The top may feel dry but underneath where the primer touches the plastic it will still be wet Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3705319 Share on other sites More sharing options...
JeffTibbetts Posted June 2, 2014 Author Share Posted June 2, 2014 With the airbrush primer it needs 24-48 hrs to fully dry. The top may feel dry but underneath where the primer touches the plastic it will still be wet Never noticed that. Maybe I'll check a discrete spot tonight. Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3705342 Share on other sites More sharing options...
Forté Posted June 3, 2014 Share Posted June 3, 2014 I thought their airbrush primer was designed to be used as is with no dilution. Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3706031 Share on other sites More sharing options...
JeffTibbetts Posted June 3, 2014 Author Share Posted June 3, 2014 I thought their airbrush primer was designed to be used as is with no dilution. It sure is. It was a bit thick, though. Maybe it was a bad bottle... Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3706111 Share on other sites More sharing options...
Forté Posted June 3, 2014 Share Posted June 3, 2014 Shake the everything out of it ;) Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3706114 Share on other sites More sharing options...
JeffTibbetts Posted June 3, 2014 Author Share Posted June 3, 2014 Shake the everything out of it Haha! I would love to put a shaker bead in the bottle but you can't open up the dropper tops I don't think. I did shake it up a bunch. Maybe I should do more. :P Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3706335 Share on other sites More sharing options...
Forté Posted June 3, 2014 Share Posted June 3, 2014 Sure you can. I do with all my Vallejo. It's the dropper part that comes out and have some tissue or something handy for any paint that escapes. Also means that any unused paint in your airbrush can be poured back in too. Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3706352 Share on other sites More sharing options...
JeffTibbetts Posted June 3, 2014 Author Share Posted June 3, 2014 Sure you can. I do with all my Vallejo. It's the dropper part that comes out and have some tissue or something handy for any paint that escapes. Also means that any unused paint in your airbrush can be poured back in too. Really? I need to look at the bottle more closely. Thanks! Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3706401 Share on other sites More sharing options...
averykess Posted June 5, 2014 Share Posted June 5, 2014 Like everyone else said:1) wash/rinse the models. Dunk and agitate your sprues into a shallow pan with some dishwashing soap and water before you cut anything off them. Be sure to rinse them too. 2) check spray distance and thinner medium. Water and flow mediums may be undermining your adhesion. You will need to let the primer cure for 24-48 hours. 3) It will still rub off if you over-handle it/scrape it. The real protection is going to come from gloss/matte varnishing, but it can really kill your subtle colors. I use the grey Surface Primer from Vallejo straight from the 200ml bottle shot at 15-20 PSI with a Paasche Talon using a .38MM needle. I have a small (standard) dropper bottle of the Vallejo Air Grey Primer (it is a dark grey compared to the Surface Primer) and I don't think it works as good as the Surface Primer. (links for reference, not necessarily an endorsement of those websites) Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3709332 Share on other sites More sharing options...
Burias-Drak'shal Posted June 7, 2014 Share Posted June 7, 2014 I use the Valeejo primers myself either through my airbrush and ocassionally brushed on if its not worth the trouble of getting the airbrush out. Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3711715 Share on other sites More sharing options...
JeffTibbetts Posted June 7, 2014 Author Share Posted June 7, 2014 I use the Valeejo primers myself either through my airbrush and ocassionally brushed on if its not worth the trouble of getting the airbrush out. Do you shoot them straight or cut them with something? What PSI do you normally use? And most importantly, do you ever have a problem with it going on soft or do you have any tricks? Link to comment https://bolterandchainsword.com/topic/291793-soft-primer/#findComment-3711782 Share on other sites More sharing options...
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