QUOTE(cllee86 @ Sep 7 2017, 06:59 PM)
Oooo...thanks for the advice bro
I thought you have airbrush and use it exclusively to paint your models.
What is the distance to keep when spraying? For Tamiya cans we usually spray a little closer but if I spray at the same distance using DIY cans then it will be too wet already. Oh yea too wet means the paint paint is overflowing and dripping.
And what kind of paint is recommended? Acrylic or lacquer?
i have AB but for basic colors & on main parts i use cans if available because it saves alot of time and don't cost too much. 1/100 kit usually needs 1.5 cans of Primer & Paint to cover. if use AB, will have to keep topping up the paint and this may also cause inconsistency with the mixture, even if you premix a big big bottle (i use mr.hobby size bottle) everytime you open up and close it will slowly dry up so you have to add more thinner, and AB is quite sensitive with mix ratio too thick it won't flow properly too thin it becomes too thin. if you spray many parts you need to spend more time to get each top up ratio properly. unless you have big paint compartment like Car Airbrush.
also most AB are designed for detail works, it's difficult to get wet thick glossy coats unless you use bigger nozzle as you need thicker mixture, lower psi, which fine tip will have problem with paint flow. if you AB wet coat it might look wet when you spray but once dry it will look less smooth you get the airbrush dot pattern which is what you normally want, unless you want a glossy smooth look. it also depends on the brand & type of paint. in short, AB requires more experience as different AB perform differently. And not just paint brand/type, Even the thinner used can affect the performance. but the main reason is i'm just lazy to wash the AB la.
i usually keep the part as far as i can maybe 50-60cm but people are saying 30cm so you try yourself. you have to test with 1 burst 1st as cans varies with temperature & brand, age of can also affects it's pressure. if you see very rough it means too far, and that coat probably won't stick very well, so just closer abit and spray away, by adding more burst you can cover those rough areas, any pop up dots you notice from the spray may dissolve if you continue with 2-3 moving sideway sprays (not 100%). for Mr.Hobby Top Coats you have to really leave the parts on a stool and stand even further. Mr.Hobby Flat & Semi-Gloss tend to smudge if you do more than 2 burst or 1 burst if you spray too close, and the finishing feels like sandpaper really rough, but Super Clear are very durable, but it's a dust magnet due to rough surface. Gloss are easier to use as they don't frost like Flat & Semi. A real pain to have sand to remove the smudges (those aren't oversprays). But for cans there aren't much option out there for Flat coats. Gloss, many options and there is a reason why, it's difficult to make proper flat coats.
Like i said, never go more than 2 burst for static position spray, 4-5 for Side Swipe spray.
Lacquer is tougher, sticks better, can take any layer of new paint without much issues, but may react if you spray Lacquer on other type paint. it takes longer time to cure, and is toxic. Enamel is ranked 2nd, is also toxic and takes longer time to cure, Acrylic is the safest, easier to find and cures faster and for bottles they "claim" you can use water to dilute and also cheaper.
So depends what you want to do, the base is best using Lacquer, as it can take any new coats including top coats. If you panel wash then you must use Lacquer. if you panel line using marker, the surface must be very smooth so you can easily wipe off the excess with eraser. Rule of thumb is every new layer of paint, always start with mist coat, this will ensure minimal damage on the base coat.
And don't bother with those flat white/black cans, they result in rough surface and can crack when you apply new layer even using same can.
I mainly use AB on Flat Coat because i calculated the whole compressor + AB + clear+flat base is only worth a few cans of Top Coat and you can get much better matte result.
Also, Lacquer a.k.a Mr.Color bottles are thicker than Acrylic a.k.a Mr.Hobby Aqeuos. so you are actually getting more for the same price if you buy Mr.Color. For Tamiya they have different codes for their Lacquer/Enamel/Acrylic paints. Mr.Hobby bottles generally will dry up after open but Tamiya bottles don't dry up much but Tamiya cost more as they are bigger. alternatively you can use Gaia Notes. You can only mix Lacquer with Lacquer, Acrylic with Acrylic, Enamel with Enamel, you can't mix different types of paint together but generally Lacquer Thinner works on all types of paint.