Poormans “Hinge Bit”
Find a pen that is thick enough to fit your hinge hole, or grind it to the right size.
Ever needed a cheaper way than buying an entire set of metal hinge bits for marking a center hole… you may have it in your junk drawers at home… This method centers a pen tip in a hinge hole.
Use a pen with a fat tip, and grind to the dimension you need for the hole in the hinge. This example shows a tip ground down about 1 mm. It’s plastic so you can just sandpaper, too.
Center the pen in the hole, click the pen, hold and push, and you get a mark where you can either drill or make the hole bigger with a punch.
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Find a pen that is thick enough to fit your hinge hole, or grind it to the right size.
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Put the tip into the hole, hold steady, and dispense the tip to make the mark in the correct center. Then use a punch or similar to increase the size of the hole, or just drill from the mark.
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