Repainting using HVLP Spray Gun
I’m making a simple tool case/rack. I used oil paint by brushing. It does not look nice(the brush marks is teasing me) so I decided to repaint it using HVLP spray gun. This will be my first time to use spray gun. Question : Shall I sand it before repaint? Do you think it will look much better? The picture attached here may not do justice.. Thanks for sharing your expertise & knowledge.
You certainly do need to sand first. Brush marks are three dimesional and will show through a perfect sprayed finish if not removed by sanding.
WILL it look better? It certainly has the potential to look better, but spraying has it's own learning curve, different from learning to brush enamel without brush marks. It also makes a big difference how well the paint is matched to the gun.
Before you start to spray the tool box, spray cardboard boxes and the like to get the hang of what works and what doesn't.
Agree with Steve S as well -
Also I never like running paint through my HVLP spray gun - it's hard to clean - I usually have to take the gun all apart.
How about those Wagner Systems - I think they are better suited for paint.
You might try using a sharp scraper to level the paint rather than sanding.
Thank all for your answers & recommendations.
Have a nice day and take care.
>>> This will be my first time to use spray gun.
The first thing you should do is learn how to use a spray gun. Spraying a finish is not something you pick up and do. There are lots of factors that figure in to getting a nice finish. The product must be the correct viscosity and the air and material adjustments must be set correctly.
I suggest you first get some cardboard boxes and practice spraying until you get comfortable and consistent. Practise with just plain water first, then practice with your planned finish material Practice spraying the inside of the box also to see what happens when the material "blows back" at you. There is also a required order in which to spray various parts and areas. You might want to get Andy Charron's Spray Finishing book. It will go into detail about the whole process. Don't let your project be your learning curve.
Finally, when spraying waterborne finishes, clean your gun carefully after each use. Don't wait or the finish will harden in the gun passages.
Thanks for your advice,tips, method & procedure in using spray gun.
Actually I bought the Erlex5000 about a year ago. I've been practising using it with the pot empty. Honestly, I cannot even use water to practise using it because of space constraint. I should have spay booth or I may do it in open space. Either way I still cannot do now. I have a 2-car garrage workshop I built recently. But it is located in my hometown village, about 200km away from the home I live now. I visit the shop once a while, for a short time. So maybe I would try to use/practise using it during that time.
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