diyhandyman
Member
- Messages
- 19
Hi, I want to spray on MDF to achieve a piano black finish. I have attempted already myself with little know-how, and i got pretty respectable results, but i know it's not right.
I just got the raw MDF panel, sanded it down with 80 grit at first, then 240 grit. I sprayed it with black exterior paint, about 3 coats without letting it dry in between (seems very wrong), about three times, letting each of the three coats dry. After it dried, i sanded it down with 180grit paper, and after the next coat i sanded with 240grit paper. After the third set of coats dried, i sprayed Mylands No. 8 Polyurethane Lacquer, Gloss. The lacquer application always gave me an orange peel effect. I applied about 3 drying coats of the lacquer too. The wood did become pretty shiny, but it was all orange peel effected, and looked pretty distorted. I know I'm supposed to primer my MDF too.
I have two spray guns, a 1.4mm conventional spray gun, and I have a 1.7mm HVLP spray gun.
Another concern i have is to do with the process itself. I'm not talking about the wood finish, but more of the paint finish. The wood is simply going to be as good as the elbow grease i put in to it, i know that. I'm not sure how to achieve a decent paint finish, or more simply, how to use paint with my spray gun properly. I see videos on youtube of people spraying stuff with tons of paint going on the working surface really, as they want it. When i try spraying myself, I find myself having such a weak mist of paint coming from the tip of the gun, hence having to go over the wood about 3 times to give it a dense cover of paint. This was with the 1.4mm gun. I haven't tried the 1.7mm gun yet, i only got it today and I am hoping that the bigger tip will resolve this. I did spray lacquer with the 1.7mm gun, and the lacquer was being sprayed all over the place, very misty, rather than concentrated as a straight flat plane.
So what i would like to know is:
1) A suggestion for a primer that can be sprayed easily, giving a finish which will be reasonable
2) A suggestion for black paint, which can be sprayed again giving a decent finish
3) A decent lacquer that will 'mirror it off', although i think Mylands lacquer seems to be ok.
4)To eliminate the orange peel, I presume its the fact that i'm putting on too much lacquer on the surface? Maybe i have to glass paper, wet sand between layers of lacquer?
5)When I spray a coat to dry, Do i want full coverage or do I just want to finely mist the surface with the paint/lacquer?
6) is 1.7mm enough for working with MDF, (primer, paint, lacquer)? (Perhaps i should use the 1.4mm for lacquer?)
Thanks
I just got the raw MDF panel, sanded it down with 80 grit at first, then 240 grit. I sprayed it with black exterior paint, about 3 coats without letting it dry in between (seems very wrong), about three times, letting each of the three coats dry. After it dried, i sanded it down with 180grit paper, and after the next coat i sanded with 240grit paper. After the third set of coats dried, i sprayed Mylands No. 8 Polyurethane Lacquer, Gloss. The lacquer application always gave me an orange peel effect. I applied about 3 drying coats of the lacquer too. The wood did become pretty shiny, but it was all orange peel effected, and looked pretty distorted. I know I'm supposed to primer my MDF too.
I have two spray guns, a 1.4mm conventional spray gun, and I have a 1.7mm HVLP spray gun.
Another concern i have is to do with the process itself. I'm not talking about the wood finish, but more of the paint finish. The wood is simply going to be as good as the elbow grease i put in to it, i know that. I'm not sure how to achieve a decent paint finish, or more simply, how to use paint with my spray gun properly. I see videos on youtube of people spraying stuff with tons of paint going on the working surface really, as they want it. When i try spraying myself, I find myself having such a weak mist of paint coming from the tip of the gun, hence having to go over the wood about 3 times to give it a dense cover of paint. This was with the 1.4mm gun. I haven't tried the 1.7mm gun yet, i only got it today and I am hoping that the bigger tip will resolve this. I did spray lacquer with the 1.7mm gun, and the lacquer was being sprayed all over the place, very misty, rather than concentrated as a straight flat plane.
So what i would like to know is:
1) A suggestion for a primer that can be sprayed easily, giving a finish which will be reasonable
2) A suggestion for black paint, which can be sprayed again giving a decent finish
3) A decent lacquer that will 'mirror it off', although i think Mylands lacquer seems to be ok.
4)To eliminate the orange peel, I presume its the fact that i'm putting on too much lacquer on the surface? Maybe i have to glass paper, wet sand between layers of lacquer?
5)When I spray a coat to dry, Do i want full coverage or do I just want to finely mist the surface with the paint/lacquer?
6) is 1.7mm enough for working with MDF, (primer, paint, lacquer)? (Perhaps i should use the 1.4mm for lacquer?)
Thanks