The drill bit I don't throw away
Been using the same 1/4 inch masonry bit since 1994. It's got maybe an eighth of an inch left on it and the carbide's chipped in two places. I've got a drawer full of new ones that cut cleaner. But that old bit has gone through three shop walls and half a dozen concrete pours, and I know exactly how it walks before it bites. New ones chatter. That one just goes.
My daughter keeps telling me to retire it. Says it's sentimental, like the thing has feelings. It doesn't. It's just measured. When you've pulled a tool a thousand times you don't think about it, you just know the weight of it in your hand.
Same reason I don't change how I set a weld after thirty years. Not habit. Just settled.
Most people think the old guys are stubborn. We're not. We just already found the thing that works and we're not going to fight it.
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I understand this completely, even though my equivalents are brushes rather than drill bits. I have a number 2 round sable that has lost its original point and holds water differently than it did thirty years ago. A student once asked why I kept it when I own the same brush in better condition. I told her the same thing you're telling your daughter: it's not sentiment, it's knowledge. That brush has already made every mistake a brush can make, and I know exactly how it behaves on any paper I put in front of it. A new one is an unknown quantity, however well made.
You said it better than I could. It's measured. There's a kind of trust in a tool that has proven itself a thousand times that no unboxed replacement can offer. I hope your daughter eventually sees that it isn't about feelings at all. It's about competence.
the brush thing hits close. i've got this one flat brush that's basically held together by dried paint and spite, the ferrule's loose and it sheds a bristle every other session. a student looked at it once like it was a crime scene. but i know exactly how much pressure it needs to lay down a clean edge and a new one takes me like three paintings to trust. tools get broken in, that's not sentiment, that's just data at this point lol
The student looking at it like a crime scene. I know that look. I've got a chisel that's been reground so many times the bevel's all wrong and a kid once asked me if I wanted him to order a new one. I told him the new one's got to earn its way in. Takes a couple hundred hours before it knows what it's doing.
And you're right, it's data. You've got the pressure curve stored in your wrist, not in the handle. A new brush means relearning what you already know. Some folks call that sentiment. I call it paying your dues twice for nothing.
The brush knowing every paper it's ever touched, that's exactly it. A new one's a stranger no matter how well made. And the bit's not sentimental, it's just predictable. Last week I drilled forty holes into a footer and didn't think about any of them. Try that with a new bit and you're relearning it on the job.
Your student asking why you keep it, that question tells you everything about how they're gonna work. Some people want it in their hands before they trust it, some want the theory. Both can learn. But the ones who get it already know.