Hi guys and gals!
A couple of weeks ago I've completed the first version on my green projector in old PC case. I decided to redesign the PSU to get +5, +12, -24, +24 volts from standard PC PSU. My version is not stable enough still so I have to use 2 PSUs. And there is enough free space for future upgrades (more green or RGB sweet dreams...)
And some words on finishing (for David ):
Step 1 - sanding. I used 240-grit sandpaper for steel lid and 400-grit sandpaper for plastic. Pumice powder and steel-wool are also good choice especially for figure surfaces. I've sanded with water sprinkled on the surface. And if you have big or deep scratches you have to use putty before sand.
Step 2 - cleaning. I used common detergent powder.
Step 3 - sealing. I used grey primer for cars (use white primer for bright paints (not pants )): 3 coats, about 15 minutes between each sealing session. The sealed detail should be smooth and even.
Step 4 - drying. Leave sealed detail for 24 hours for drying (high temperature and low humidity speed up the process). The primer film have to be firm after this stage.
Step 5 - painting. Paint several thin coats (don't try to do everything at one time, it's better to paint several thin than one thick coat), begin with hard places (edges, concaves, e.t.c.) and end with big plain surfaces. If you observe defects (particles, scratches) - let the fresh coat dry, lightly sand the defect and the next coat will hide the defect.
Step 6 - final drying. I don't like this stage: the item looks brand new but you don't have to touch it. Just leave it for about 24 hours...
Step 7 - polishing (if you like to obtain mirror-like surface). You can use burnishing pastes or car polishes.
P.S. Sorry, technology pictures are from another project.
Igor.