[Jewelry making - Article 00307] - Re: [Orchid] Drill press - drills don't clamp in exactly straight

[Terry Ogden]

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RR

    If you have a new drill press and the bit wobbles, return it if you
    can, it should not do that. Not only may the chuck be off, but the
    shaft could be damaged in which case a new chuck would not help. 

    As far as drill speeds, they are selected primarily by the size of
    the bit, the smaller the bit, the faster you can go. On my drill
    press, if I use a 1 mm bit for drilling stone, I run it at about 2500
    or 4000, using a 3/4 inch bit in wood or steel, I set the speed at
    300 to 600 depending on the hardness of the material. Just remember
    that if your bit gets real hot, then you are turning to fast or
    feeding to fast and nothing will kill a bit quicker than heat. By
    heat, I mean something in the 300 F and above range. 

Terry

 
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