30
Apr 13

Testing more airbrush paints (part two)

Tried out some more paints, this time comparing the results at different pressures as well.

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This time I’ve lowered the pressure just a bit to about 35 psi, which might still be a lot, but it’s always interesting to see what will happen.

The first test is done with the gaianotes Surfacer EVO Flesh. Mixed at 2:1 (thinner to paint), got four painted spoons out of it using 2ml of paint, so just like yesterday about 10 cents per painted spoon. It has a similar coverage as the matte 153 Stone Green.

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Next is the Plamo Colour Plastic Gray Primer, at the same pressure, mixed 1:1, painted 6 spoons using 6 ml, so again 10 cents each. Coverage seems to be about the same as the gaianotes Surfacer.

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Hitting these repeatedly with a sharp metal object shows that both have a fairly similar surface adhesion.

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Also did the strength test on the paints directly, gaianotes (green, on the right) seems to have a better adhesion directly to the plastic than Plamo Colour’s (maroon, on the left), but the paints clearly do not adhere directly to plastic as well as the primers.

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Tried out the Plamo Colour Black as well at 35 psi pressure, again using a 1:1 mix, got 2 spoons painted out of it, so each at 10 cents as before.

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On the left with primer applied below the black, on the right the black painted directly onto the plastic spoon.

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For the next tests I have lowered the pressure to a more sane 20 psi.

Trying out with Plamo Colour’s Bright Orange, mixed as usual at 1:1. At this air pressure I managed to paint 6 plastic spoons using 2ml of paint, which is only 3 cents per spoon. The surface coverage was a lot easier to get even and came out perfect, with a slight satin effect. Using a 2:1 (thinner to paint) ratio in a second test gave a glossier result, used the same amount of paint, but was slightly harder to cleanly paint and probably needs a lower pressure.

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With 1:1 ratio on the left, 2:1 on the right.

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Finally tried out some gaianotes glossy paints as well at different pressures.

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First the Brilliant Pink 014, at 2.5:1 (thinner to paint) ratio, at 35 psi. This yielded 6 painted spoons using just 1 ml of paint, which comes out at 3 cents per spoon just like the previous test. This seems to be a useable pressure to paint at using the gaianotes paints. Painting felt similar to the previously tested Plamo Colour’s Orange at 20 psi from the previous test as well.

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Lastly the Pure Orange 015, also at 2.5:1 (thinner to paint) ratio, but this time at 20 psi. This resulted in 10 spoons getting painted using just 1 ml of paint, which comes out at only 2 cents per painted spoon, which is the cheapest result so far. It felt slightly more difficult than the previous test to get a good surface coverage, though.

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Finally, here’s the gaianotes Pure Orange on the right compared with Plamo Colour’s Bright Orange on the left. The gaianote’s orange is slightly more yellow than Plamo Colour’s.

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More tests to follow, but probably not tomorrow.


29
Apr 13

Airbrush paint tests (part one)

Finally got some time to try out the new airbrush and compare some paints.

For these first test I used the “Tamiya Spray Work HG Airbrush III”, with the air compressor output left wide open at somewhere between 40 and 60 psi. I know, way too much pressure, but the best way to learn is to do things the wrong way, of course. I’m using Plamo Colour’s thinner for all of the paints.

The Plamo Colour paints cost 4 GBP per 60 ml, counting a shipping overhead of 20% this comes out to about 5,70 EUR per 60 ml, so roughly about 10 cents per ml. The gaianotes are about 1,50 EUR per 15 ml, but have a shipping and import overhead of about 100%, so that ends up being 3 EUR per 15 ml, so roughly 20 cents per ml.

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The first color I tried out is the, solvent based, Maroon from Plamo Colour. Mixed at 1:1 (thinner to paint). Painted two spoons using 2ml of paint, which is about 10 cents per spoon. Difficult to get an even coverage at this air pressure.

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After that I tried out one of the gaianotes paints. The 153 Stone Blue, which apparently is a matte color. I first mixed this at 2:1 (thinner to paint), but this blocked sometimes, so I adjusted it to 2.5:1. Even at this pressure, it was fairly easy to get an even surface coverage. Using 2 ml of paint I managed to paint 4 spoons, which is double what I got out of the same amount of Plamo Colour paints, but also ends up at 10 cents worth of paint per spoon.

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I tried another color from the Plamo Colour range, this time the Lavender. Mixed the same as the Maroon, it performed about the same too. I did get three spoons out of it this time, so that’s about 7 cents of paint per spoon this time around. This paint has to be shaken heavily before use, though, as it seems there’s some white pigment that’s sinking a bit easily.

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Lastly I tested with a glossy colour from the gaianotes paints, the Viridian Green 013. Mixed at 2.5:1 (thinner to paint), using 2 ml of paint. I managed to get 3 spoons painted, but the surface coverage was really bad, and not useable at all. It seems there’s a significant difference between gaianotes’ matte and glossy paints.

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Tomorrow I will compare the paints at different air pressures.


28
Apr 13

Cleaning through some data

Restructured and simplified some of my folder structures to completely migrate my working data to BitTorrent Sync. Way easier than having working directories separately on every machine.


27
Apr 13

Gaianotes paints arrived

The paints from gaianotes finally arrived as well. Even though I picked speedpost, which should arrive in only a few days, it basically stayed waiting at customs for a few weeks.

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I spotted an unusual label, though. This one has Ex-BLACK in the English text where it should be Ex-FLESH.

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26
Apr 13

Spray cabin arrived

The spray cabin arrived, along with some other stuff. Important for keeping bad fumes from the airbrush out of the room.


25
Apr 13

Nice weather, when suddenly

We finally get some nice and warm weather. And then heavy demolition works start popping up outside. Dust everywhere.

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24
Apr 13

BitTorrent Sync

There’s a cool new tool out called BitTorrent Sync that is kind of like Dropbox, but peer to peer, without the server. It’s still an alpha, but it seems to be working very well, and I haven’t had any issues with it so far.

I find this to be pretty useful, as I have a fixed machine running at home and one in my student room, with only my netbook moving between the two. In my case, I have setup sync folders on the three devices, the netbook basically acting as portable storage server, and I can share gigabytes of data between my working locations directly over LAN. I’m also experimenting with putting Mercurial repositories into BitTorrent Sync folders, to get the best of both worlds, and so far that seems to work pretty handy as far as single user purposes are concerned.

This is, for me, a lot more useful than Dropbox, as I tend to easily have a few dozen gigabytes of working data in my active project directories, which would be impossible to synchronize over the internet at the current upload speeds.

I’m thinking this might also be a useful for the distribution of the Ryzom Core asset library, keeping updates automatically synchronized, as well as for sharing the assets between artists in a distributed development environment.


23
Apr 13

Spray-putty and sandpaper

Bought some spray-putty and tried it out on this thing here. Finished it first with 600 grit sandpaper followed by 1200 grit. Looks pretty smooth. Probably need a few more passes if I’d want to use this to get rid of the heavy scratches and rough parts.

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22
Apr 13

No news

Nothing new today.


21
Apr 13

Busy

It was very busy this weekend. Thanks everyone.