I need some concave-shaped objects for the parabolic solar cookeri already have the aluminum but i need something concavei know a satellite is a good one but i cannot find a perfect size from anywhere?????
toss em in the dishwasher ;) Actually the circuits in the card won't be affected at all by dust, the biggest concern of dust in a computer is clogging the heatsink and fan so they don't work correctly and the system overheatsCompressed air is probably the easiest and most cost effective way to clean those components.
Compressed air is one optionPersonally, I use old toothbrushesThey make getting between the components really easyJust make sure you don't press too hard; some of the tiny parts that stick up high can be very flimsyAnd, please, make sure you do so when the system is offIn reference to one comment about dust being harmlessdust can actually contain very fine metallic particles, depending on what activities take place around your computerI have a tech friend who has actually had problems with various boards until he dusted them off.
try a big stainless steel salad bowl.or any bowl, but line it with aluminum foil or something better.