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A guy at the shop kept swearing by wax sticks for tapping threads
I always used cutting oil for everything, never thought twice about it. But this old timer, Robbie, kept telling me to try wax sticks on aluminum parts. I figured he was just stuck in his ways, you know? Finally gave in last week when I was tapping some thin-walled 6061 and my tap kept grabbing. Grabbed his blue wax stick, dabbed it on, and the cut was buttery smooth. No chatter, no binding, and the thread looked cleaner than any oil job I've done. I still use oil for steel, but for aluminum I'm converted. Has anyone else had an old trick from a co-worker that actually turned out to be better than the standard way?
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the_lucas1mo ago
Man I was exactly the same way, swore by cutting oil for everything including aluminum. Thought wax was some kind of gimmick for people who didn't know what they were doing. But then I had this job with some soft 6061 that kept galling up on me and ruining threads. A guy handed me a stick of wax and told me to try it and I felt stupid after because it worked so well. No chip packing, no grabbing, just smooth cuts every time. It really does change things on aluminum, I still use oil for steel and stainless but wax is all I grab now for anything soft. Funny how the old guys always have something up their sleeve that makes you question why you didn't listen sooner.
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nathan2891mo ago
And that's the thing about aluminum, it's just ornery with oil sometimes. I've had the same thing happen where it feels like the tap is fighting you the whole way, especially in softer alloys like 6061 or 5052. With wax, it's like the aluminum forgets it's supposed to be difficult. The wax doesn't let chips pack up the flutes either, which is a huge deal on blind holes. I still keep a can of Tap Magic around for steel and stainless, but for aluminum I grab that same blue wax stick every time. Just make sure you clean the threads after, because sometimes that wax can leave a little residue that might throw off a thread gage if you're doing anything real tight.
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