I have been using 0.8mm tungsten carbide drill bits for quite a while. I use it with a rotary tool free-handed, no drill press. I read all around the internet that these bits are really brittle and should not be used without a press. Well, I have never broken a single bit.
Lately, I’ve been wanting to get some smaller bits. I have about 10 pieces of 0.8mm bits from Ebay. Since I had such success with these bits, having 10 of them was rather redundant and wasteful. So, I thought I should get assorted sizes this time around, which means only 1 piece of each size. At these smaller sizes, I’m not really that confident with my hands.
Thinking about it, I noticed I had a pair of ball bearing drawer slides lying around. Aha, with some MDF scraps, a couple of hose clamps, and some screws, I could whip up a homemade drill press.