You mention in the title that you want a hand drill. Don't do it, get a stand. Carbide bits break very easily with little lateral force.i need handy drill machine for PCB.
You are a mutant. Even when my hands were steadier, I don't think I could do that for hundreds (or even dozens) of holes without snapping a bit.If you have good eyesight, a steady pulse, and master the right technique, you do not need to use a drill press, at all.
I've only broken one bit accidentally , and it was because I sneezed ....You are a mutant. Even when my hands were steadier, I don't think I could do that for hundreds (or even dozens) of holes without snapping a bit.
I've broken 2 carbide bits in the past couple of months, but not from drilling. Both were from carelessness. I laid a bit on the bench and put something on it; snap. The other broke while I was using a brush to get dust off of the drill press. At a buck each, my retirement budget can't support a drill bit breaking habit. During AliExpress' Veterans Day sale, I decided to take a chance; 10 for $1.78 with free shipping.
I only use solid carbide bits, btw... and they don't flex.Years ago, I bough a lot (>1000) of resharpened PCB drills at pennies each. Breaking them is not the real issue with me. They tend to break at the flex point, which is often just where the bit enters the board. If it has penetrated the board, you maybe able to punch the retained fragment out from the back side. If not, you can have a mess.
I tried with just the tool at first, many years ago, but it proved to be too heavy and large to be moved around quickly and for an extended period of time. The flexi-shaft is just the thing for this application. Without it, it would be almost impossible for me to get the job done.I wonder if that cable extension is made a bit better than the tool itself. Have you tried with just the tool?
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by Jake Hertz
by Jake Hertz