Weather Observation with Raspberry Pi – Vol4 Painting Metal

I kept painting on only wood, but time has come… the time to paint on metal!

Painting Metal

The way to paint on metal and plastic is different from the way to paint on wood. We can’t use brushes! If you use brushes, they make striped pattern.

Durability is another concern. Oil-finishing and dye-based paints harden wood at the same time so that the paint itself doesn’t come off easily. This doesn’t happen when we paint on metal. Paint can’t soak into metal or plastic. This means paint itself has to harden.

I bought this one.

Kanpe Hapio Lacquer Spray Black

Kanpe Hapio Lacquer Spray Black

The explanation says:

Not suitable for these materials: Aluminum, Stainless, Plastic, Styrofoam, and glass

This means my case is not suitable. I think the paint would be repelled or don’t stick to the surface. I found the solution soon by searching. I needed to spray primer first.

Asahi Pen Metal Primer

Asahi Pen Metal Primer

Primer is an undercoating paint. This primer is for metal except steel. There are primers for wood and plastic so you have to buy an appropriate one.

The explanation says:

This metal primer is good for undercoating materials such as copper, brass, aluminum, stainless, chromium, zinc, and tin.

I tried right away. I didn’t sand before painting, but sanding may be a good idea.

Sand the surface before painting. Use #100 or #200 sand papers and sand gently. Pay attention not to add too much stress. You would make deep scratches. – Dummy’s Making original effector P.127

Before Painting

Before Painting

Main Case with 1st Primer Front View

Main Case with 1st Primer Front View

The color became darker.

Main Case with 1st Primer Side View

Main Case with 1st Primer Side View

The instruction says “Paint thinly for 2 or 3 times”, so I painted twice.

Main Case with 2nd Primer Front View

Main Case with 2nd Primer Front View

Main Case with 2nd Primer Side View

Main Case with 2nd Primer Side View

And then I sprayed the black one.

Main Case with Black Spray Front View

Main Case with 2nd Black Spray Front View

When I painted the first time, I forgot to take pictures.

Main Case with 2nd Black Spray Side View

Main Case with 2nd Black Spray Side View

The paint is dripping. 🙁 I guess I sprayed too much.

The surface is, including the dripping part, really tough. Even if I scratched the paint with my nails, the paint didn’t come out at all. I couldn’t make scratches too. Very good!

This post is also available in: Japanese

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