Arcade Collecting > Pinball
Jennifers "HOT" new pin....
jennifer:
Hmmm, we have a curious problem now, so POP QUIZ!!!.... The speaker hole was drilled at 5.50" before it was assembled, as per original, However the new speaker is 8" (7" across the cone) but HOW to modify the hole could be tricky....Any thoughts?
Mike A:
Fasten a piece of wood behind the hole. It will give you something to bite into in the center of the hole.
jennifer:
Yes that would work, But 3 things come to mind. That extends the pilot bit 1/2" before it even touches, and could be a "wobbly" start, and #2, the means of fastening it would have to be carefully done as to not create damage to the outside the hole area and #3 finding center could be considered overly complex.... Close, really close Mike, In fact Jenn will give you that one. but there is another answer, A plug close cut IN the hole , wedged in with toothpicks and set with epoxy. and then cut from both sides to minimize splintering ;)
jennifer:
So with that in mind, I have to cheat this a little in terms of using budget backyard machines on this.... Jenn wants that pilot hole as strait as possible (in hardwood) and had to use a machine so it didn't break my wrist again.
Malenko:
cut the right size hole in a scrap piece, clamp it (or screw it in and putty the holes after), then user a router with a flush trim bit.
Finding the center of a circle is super easy, you can square the corners and draw diagonal lines, or use the compass method.
https://www.wikihow.com/Find-the-Center-of-a-Circle
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