Keeping Dirt Out of Paint
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Ha ha, thanks Jason. It was a busy shift for sure!
Of course, working that quickly means most of my jobs lack the finesse that many of you guys put in, but I’ve resigned myself to the fact that that’s what this place needs. I’d say more than half of them need some kind of polishing work after painting to remove the dust, but then that situation isn’t helped by the push-through booth. It would be great to leave the cars undisturbed after painting like Paintwerks advises, but unfortunately I have to open a 20′ long roller shutter door and slide the cars sideways into the oven. Even the cleanest jobs can’t survive that kind of disturbance.
One thing I can say for sure though is that no matter what we do inside the booth as painters, prep work has a great deal to do with how clean the final job turns out. I carry out the same cleaning procedure on every car but some turn out much cleaner than others, depending on how they have been prepped. If the dust extraction equipment has been used to full effect, if the jobs have been kept clean and blown off well as they go along, it definitely shows in the end result.
Oh, and here are some snails in action :woohoo:
[img]http://i321.photobucket.com/albums/nn385/Duluxdude/Work/2014-03-14104533Large_zps8486d829.jpg[/img]
You can’t see it in that picture but I’ve also used soft foam down the gap between the door and wing/fender. Not normally easy to do but the new 3M stuff makes it a breeze.
Hey everyone, new to the network but figured if I keep reading posts I may as well contribute. Being in a small shop and the only painter, I have the luxury of never having to worry about anyone contamination my work. I get to tape in the booth and use plastic without paper right up to the panels which reduces trash greatly. The biggest thing for me aside from always wearing a paint suit is never blowing when i tack. Once paint starts going on the vehicle the only air being moved is from when i spray. We have a side downdraft so limiting the air disturbance is crucial. Plus we are the repair facility for our Local Ferrari/Maserati dealer so the less dirt the better. When i do have dirt, i’m the one who has to cut and buff and nobody really likes to buff….ever. The one big thing I don’t do is wear gloves. It’s always hot in Florida so trapped sweat in a glove could always equal a nightmare for me so I avoid running the risk. I think I am going to steal your snail idea Andy. Seems a lot easier then fighting with back taping handle openings every time.
Block this off with a curtain, floor sweep, filler panel and/or valance… add a filter in the curtain… and this should help a great deal.
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[url=www.amcraftindustrialcurtainwall.com]www.amcraftindustrialcurtainwall.com[/url]I have a concrete floored booth. End draught, so dust has always been an issue. It gets fully hosed out once, sometimes twice, a week and I used to sweep out between jobs. That didn’t work so well so tried bl owing out. Better but created a lot of dust in the air which would resettle.
Now I vacuum between jobs. I bought a turbo head which has a rotating brush and hook it up to a shop vac which has great suction. Makes a big difference for me.
17 jobs a day? That’s awesome, Andy. I think I’m doing well to do three – but I do repair, prep and some post paint work all myself, with some assistance from my detailer. 😆
I use paper betwwen masked edge and plastic. For me this works better that plastic all the way to the edge.
A tip for anyone who has dust/dirt problems and don’t know where it’s coming from: turn out the lights in the booth, airflow on as if you’re painting, and look with a bright halogen lamp or something similar in your hand around you. You can easily spot even the smallest dust particles floating in the air and see where they are coming from.
Also pretend as if you are spraying (make the movements) and check the lightbeam. You will immediately notice the importance of a CLEAN spraysuit (and taped off sleeves/gloves).I found out that most dirt in the air was coming from… myself.
I could see that working in a negative pressure booth but not in a positive pressure booth :kofee
[quote=”Jayson M” post=35157]I could see that working in a negative pressure booth but not in a positive pressure booth :kofee[/quote]
You mean my tip with the halogen beam? Negative or positive pressure booth doesn’t matter, floating dust is floating dust.
With a halogen beam in your hand you can see where it’s coming from.a positive pressure booth will push air/dirt/dust out not suck it in..
[quote=”Jayson M” post=35161]a positive pressure booth will push air/dirt/dust out not suck it in..[/quote]
I was describing a method for people who have dust problems in their paintjobs and don’t know where that problem is coming from. You can use a halogen lamp in a dark booth to trace the dustsource. For example a leak at your inlet filters will cause dust entering the booth, something you normally can’t trace easily but with a halogen lamp you will.
A negative or positive pressure booth doesn’t matter in this case, both can have dust problems equally.English is not my native language, so maybe we don’t understand eachother correctly, in that case my apologies.
No worries,I can see that idea working for your intake filters like you describe for either booth.But like I said before a positive pressure booth will push air out on all your door seals or leak areas etc unlike an old negative pressure crossflow booth that will suck contaminates inside.I also agree that both styles of spray booths can have dirt problems but a downdraft is more sensitive to being unbalanced which can cause the incoming air to swirl and even pick dirt particles off of the walls and floor and put them on the vehicle.Slight positive pressure is your friend along with good house keeping habits. :cheers
except I’m pretty sure in Europe, they are mandated to have a slight negative pressure :p
Exactly Ding.
Better to have a bit of dirt in the job than kill your prep staff by blowing iso fumes out of the seals. 😉Our booth sounds an alarm then eventually shuts itself down if it senses positive pressure for too long. Can be fun on a very windy day…
I guess your right Ding,I had forgotten about that…….but I’m not in Europe 😉
[quote=”Jayson M” post=35164]
Slight positive pressure is your friend [/quote]LOL health and safety would close down a shop for using a positive pressure booth, very unhealthy
Though i do recall working in them and the jobs were much cleaner, did my best paintwork in one a good few years ago,
And that was in down draught side extraction, sadly cant get away with it these days.Jayson i am not picking on you lol you do [b]awesome work[/b],i have one question though why do you think it is necessary to jam panels, i can see the point at a stretch very light pastel three stage colours.
Pick away I have thick skin in north america its ok for positive pressure in your booth :stoned I get it ,you guys cant.Sometimes I jamb parts others I do in side and out at the same time.I just did a tri stage caddy new door replacement and blend the whole side inside and out at the all at once …….
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