The Spray Painting Thread

[ian]

yes it is possible ,but why not complete the job in 2pac?
as the initial additional expense will end up the same as if you used acrylic , what i mean is that you have to use an isolator sealer ,
then a good high fill primer , then color , then clear , then wait then, block back , then buff , then repeat the process again when you burn through with the buff

["Z" UTE]

Jeri, wherever the 2pac is thin at the edges of the repair, it must be covered with a good primer filler otherwise it will bubble and craze as soon as you apply the acrylic.

As ian said, why not use a 2pac, cheapish stuff will run to less than 200 bucks for 4 litres and hardener.

Number 1 though is to check Mistsubishi paint code at a paint shop, and see whether it really is 2pac.

cheers Chuck.

[pac]

with respect to above comments you can paint acrylic over 2 pac, as long as the top coat isn't in a bad way just scotchbrite area to be painted no need for sealers or primers. I painted acrylic over 2pac over ten years , most cars have been 2 pac since the early eighties but remember to scotch or rub down with 800 wet

[Jeri]

Thanks guys

The main reason we dont want to use 2pac is for the danger in the chemicals as we dont have the proper gear....

[ian]

do you smoke jeri ?

[Jeri]

No mate,, do u ???

[o_man_ra23]

Jeri - re read this thread, there are Iso-free 2k paint systems available. Then you just need a half decent respirator ($55 at a hardware store) to filter out the particles, and you're away.

[ian]

hi jeri
i have met many people that are worried about the effects of harmful chemicals ,although they smoke and think nothing of it , i was not intending to make it sound like you were in this group, just trying to make a subtle point ,O man makes a good point about iso free systems and respirators though
ian

[Jeri]

hi people,

Do u guys think that this gun would be good enough to do my top coat an clear??

Thanks...

["Z" UTE]

Jeri, regardless of any other considerations in buying a gun, what you need to keep in mind is the tip/nozzle size 1.2mm to 1.4mm max for top coat and clear. Any larger than that and the gun is only good for spraying primer and Hi Fill. If you are only going to use the gun for a once off, then almost any gun with the correct tip size will do. Gravity gun is definately the way to go rather than the suction feeders.

cheers Chuck.

[Jeri]

So Chuck, as long as the tip is 1.2mm-1.4mm this gun should do the job, right....

what is the difference between the low pressure an high pressure guns?

thanks

["Z" UTE]

Jeri, the gravity feed guns as you have pictured are high volume(paint) low pressure (air),ie. less airflow required to get a given amount of paint onto the job, as gravity delivers the fluid to the tip.

The high pressure guns (pot under gun) rely on the old bernoulis principle of a venturi, causing a low pressure area, which "sucks" the paint out of the bottom of the pot. These high pressure guns require a load more air to operate, and have a tendancy to dry spray due to the high volume of air.

1.2 to 1.4mm is the required tip size for colour coat, and clearcoat, so if the pictured gun is that size, and you are only going to use once, then go for it.

Quality guns will use a harder material for the gun tip and needle, most of the cheaper guns use lower quality metal, which can result in burring of the needle, which causes disturbed flow and results in a bad atomisation from the gun.

The number one tip I can give any backyard spray painter is, get to know your man behind the counter at the paint shop. Lots of good advice to found here if the guy is on ball. He is also the guy that can supply a reasonable quality spray gun for about $100.00, money well spent. I buy my paint guy a bottle of Scotch every Xmas. My paint supplier helps me out big time, even to the extent of colour matching, which is normally the province of the painter.

cheers Chuck.

[o_man_ra23]

Jeri, I can concur with Chuck on the low quality gun. The first time I used mine it came out well. The last time I used it, I changed out the tip to an unused one, but still had a few dramas. The lid has cracks in it now due to the poorer plastic used, and it leaks paint into the air flow where it shouldn't due to the poor clearances getting poorer. It is now relegated solely to primer duty and I will need to buy a new gun before embarking on spraying the rest of the car.

The quality of materials and the tolerance of machining is what you seem to pay for in a gun.

[Jeri]

Thanks Guys, this is good imformation to know...
See i'd like to get a gun that i can use a few times, because before i get to do the Celica im going to do a mates magna and my ke55 coupe ( to gain practice) this way i can get the celica perfect....

What gun (make) so i get? am i looking at big money?

also what is the best way or tips on the best way to clean the gun after-use?


Thanks

[ian]

you can use a product called gun wash
its by motorspray, reasonably priced and it does the job
dont what ever you do soak the whole gun in it as it will f**k up the seals
just soak the needle tip and nozzle in it
when you re asemble the gun pull the trigger back when you are putting back the tip ( that is if you have already put the needle in } by doing this it reduces excess wear on the needle
ian