That's what I thought as well Dunc regarding nozzle size. But the spec sheets (above) shows otherwise. My 1.3 best gun (borrowed) is a top pot gravity feed. My other two guns (1.4 and 1.7) are suction guns. Does the type (gravity Vs suction) make a difference? I'd rather wait a day to check than 'splodge it on' and have to spend time rectifying. PS, the primer went on nicely with the 1.7.
Use a 1.4 for 2k, but a 1.3 will work, but generally is for clearcoat/base coat. 1.7 and up for primer. Edit.. use the gravity fed gun 1.3, more efficient, probably uses less air and better paint transfer efficiency to the panel and not just a haze of overspray.
After trying out all 3 guns, the best spray pattern was with the 1.7 nozzle at the recommended mix ratio. So, as that is what the spec sheet recommend, I've bitten the bullet and sprayed the top half. I'll wait until tomorrow before I dare look properly, but wet, it looked OK to my eyes. I would have preferred to have used the 1.4 as you guys suggested, but it was not coming out well in my test patch....probably user error Note to self:- I must get a top gravity feeder as I've wasted soooo much paint with the Syphon style gun.
Not unsurprisingly, having used the 1.7 nozzle, I've got orange peel. I'm going to sand later, but was wondering if peeps think this is too much and is a respray job (and thinning more to flow through the 1.3 nozzle) or will it sand out (2000 and then compound). Obviously I'm going to sand first to test, but thought I'd ask here first. As this is my first go with this set up and paint, I'm relaxed about this 'learning opportunity '
I think you'd be there for a long time trying to sand that out with 2000. I usually start with something a little more coarse like 1200 to get the paint flat in a short amount of time, then move up to finer grades. Personally I think I'd be flatting that back for a repaint.
Cheers Jim. How far would thin a 2pack. I did a 4:1:0.5 based on the technical specs for the hardener I have. But not sure how far I can push and the impact of pushing the 0.5 to a higher percentage.
Paint not atomising enough. Turn up the air or thin it. I'd try more air first because if you settle into a routine of over-thinning to achieve your finish it will run more easily.
I'd repaint as well rather than try and sand a finish into it, you need the practice plus colour sanding is a PITA
A day of mixed results. My respray was OK and no orange peel, but a a few drops/runs. I a getting better at this lark! I've managed to sand out most of the drips, but with two of them close to the edge, I ended up going through to the primer So tomorrow I'm off to buy some more paint (I just ran out at the wrong time) and then to do a coat to cover the offending patch. Any hints on how to coat the small patch would help. Thanks
With runs you can shave them down with a blade with tape wrapped round either end The idea being you can take the run down almost to the level of the surrounding paint. You can then get away with a small amount of wet sanding and a polish.
I’ve never been able to blend a small patch in It always shows in some way Be aware also that if you’re buying another batch of paint there’s the possibility that it will be a slightly different shade to your previous lot. That’s why I’m having to repaint a fair bit on my van
2-pac doesn't really blown in sadly. If you were skilled and experienced you'd have an aerosol can of thinners type stuff, blow the paint in then soften the blend with the can of thinners type stuff then lacquer the whole panel. In your case as it's a separate part you'd be best recoating the whole lot.
I ended up doing all of the window surround up to the swage line, using that as the cut off point. So we'll see how it looks tomorrow. I'll then sand and buff and then do the main panel in red and repeat! If it looks crap, it will still be going on as my holiday & TE are looming close.
If your job was a paint sprayer you could be harsh on yourself and expect others to remark. As you’re learning and getting help from people on here you’re right to be chilled about going away in it. Personally I find spray painting a fretful job that only professionals can get right constantly. An awful lot of people wouldn’t even attempt it. You’re doing a grand job!
Even the best ones don't get it right every time unless they have temp controlled booth, underfloor extraction etc. You'll get better at judging the paint runniness too... and when you think you've mixed it enough, mix it for another few minutes, you can't over-stir it.
It's wet down here and humidity is high for the next few days (97%). How much of an issue is this for painting final topcoat? I've finished the top grey paint (just need to buff it up). The bottom skin is epoxied and polyester primed, which I don't think is hydroscopic. With this high level of humidity for the rest of the week, would it be better if I put in hold the red paining until I get back from our two week holiday in Wales, or warm the panel and just go for it and spray the red?
