First off, good choice, I use the HP-CS exclusively for my aircraft modeling. To answer your questions:
Q: First, is it a good idea to spray acrylics AND enamels through the same airbrush?
A:Sure as long as you clean the airbrush with the appropriate thinner for the media that has been sprayed; eg.. use Windex for Future and Acylics and mineral Spirits and Laquer Thinner for your solvent-based paints.
Q:When using enamels, what method is used to clean them? Do they have to be completely disassembled every time?
A:No, not with the Eclipses. I start by pouring mineral spirits in the cup and spray this through to flush the needle and nozzle. Next I brush the inside of the color cup and front of the nozzle with a thinner soaked q-tip, followed by a couple of eye-droppers of Laquer thinner and spray this out at about 30 psi...the pressure really cleans the nozzle and needle tip very well. When I am done for the day I will remove the needle and wipe it on a napkin moistened with Laquer thinner and lightly coat it with Iwata's "Super Lube" availabe through www.dixieart.com. And thats it! Clean as a baby's.....moving right along...
Q:Do the Iwata airbrushes require a special thinner when cleaning them, or can regular paint thinner or mineral spirits be used?
A: Yes regular mineral spirits and Laquer thinner is safe and effective.
Q: Has anyone shot Future through theirs with good results?
A: Yes, I shoot Future through my HP-CS regularly. The atomization of the spray is excellent and lays down a beautifull layer(s) of the Future.
I hope you will as happy with your Eclipse as I and other have been! Happy Modeling!
Greg Williams
Owner/ Manager
Modern Hobbies LLC
Indianapolis, IN.
IPMS #44084