I took apart my HP Microserver to upgrade the RAM earlier today and was greeted by this:
Not the worse I've seen but unpleasent.
Looking closely at the front access door it almost seems like it was designed to hold some sort of dust filter!
Separating the plastic face with the metal chassis was easy, just a few clips, a nut and screw for the lock. For the filter I used a bit of window insect netting I had lying around, a single layer isn’t quite fine enough to catch a good amount dust but two layers should do the trick.
Sticking the door back together was as simple as pulling it apart;
Here it is in action, can barely see it;
Although dust is still going to make its way in to the machine (the machine is on the floor afterall), hopefully I wouldn’t need to use half a can of gas duster next time I upgrade.