When building models you need something to hold your drill bits so they are square to the wood or brass you are drilling, I used to have a drill stand but these last few years i have just been drilling with the drill hand held, I\m getting a bit shaky these days so i thought I would buy a chuck for my Proxxon milling machine, i didn't want to go to too much expense so I went down to the local hardware store Bunnings and bought a keyless chuck for $25,
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Probably a lot larger than I need, but I took it out of the package and it looked A Ok,
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I particularly checked the jaws to see that they closed OK,
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the jaws will take a 1.5mm drill bit and everything looked alright,
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when I tried it out on some wood it was fantastic, no wobble and drilled the wood no problems,
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However i wanted something that could drill even smaller holes, down around the .7 or .8 range,, I have a couple of old mini drills that are just about dead and the chucks on those will take .5mm drill bits,
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So I opened them up and this is the piece that I needed, the brass shaft, luckily the bearing was just sitting on the shaft and it slid off, but I had to use a cut off wheel to separate the brass shaft from the motor,
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The shaft with the mini chuck attached,
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this mini chuck will has I have said take .5mm drill bits, luckily i don't have to drill that small a lot,
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and the mini chuck in place in the large chuck,
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that is a 1.2mm drill bit in the mini chuck,
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and I was really pleased I drilled six holes around this grating piece, no wobble and everything was square, i couldn't be happier,
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and this is where this grating piece will sit,
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a closer look,
thanks for dropping in,
best regards John.