Another update ......
I've started the painting stage now, but instead of just posting a few pics I thought I would describe what I'm doing and more importantly why I'm doing it.
I use a few different painting systems dependant on materials used, outcome required and level of detail required. The materials used in this build have advantages (cheap, easy to work and readily available), as well as a number of disadvantages (not waterproof, not super strong, differing surface finishes).
In order to over come the disadvantages I use a base / primer coat of matt automotive spray paint. this will help the materials to be a little more water resistant. The difference in surface finishes of the materials is quite striking. Dry glue is very shiny, printed card surfaces are also shiny. Unprinted card has a satin finish and foamies are very matt.
A single coat of paint will show all these deviations which is not desirable. i want a nice unified finish so that subsequent layers can be judged in advance.
Since this weapon is basically dark grey I decided to use three light(ish) coats of matt black auto spray for the base. Here in the UK I have settled upon Halfords own brand (it's an auto parts store), because it's pretty cheap and give a finished patina that I really like. I used half a can on the MA37 to do the three coats so it works out at about £3.50 GBP or around $5 USD.
here's the first coat of paint. I have masked off the battery pack, the switch and the ammo counter window. You can see the different surface finishes showing through the paint.
Here's the final coat having just been sprayed. you can see the battery box cover in front of the rifle.
The left side of the gun after three coats have dried. You can see the battery holder hanging near the barrel and the battery box cover on the bench.
and finally the right side of the fully assembled gun after the three base coats. Hopefully you can see that the patina overall is now much more uniform and because the entire gun has been painted it should be a little more water resistant.
From here on in it will be brush, dry-brush, air-brush and sponge to lighten, add shading and detail. the base coat has taken all day to produce due to drying times etc.
more to follow.