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Makita still going strong after 15yrs of use. They were the best at the time and still works amazing today with backwards compatibility batteries. My 15yrs old driver can use a brand new battery that a 2023 model uses.
Drill a 1/2" hole through 4" thick stainless without a hiccup on a single battery. Then tap the hole on the same battery. Impressive power and reliable
4 inch thick stainless steel? What in tarnation is that for?
Custom bunker door installation?
Port holes in armored vehicles, so the soldiers can stick their rifles out of and shoot at people.
Adding a lift point. Did 12 of them and the driver was on the toasty side when done
A lift point on what, though?
Large pieces of billet material, lift point added for moving between machines on the first 2 operations. Afterwards the item is light enough to pickup. Roughly 323lbs of material removed in the first 2 operations. Then the items went on to 6 months of machining to complete them. Very expensive one off pieces manufactured during R&D. Final products are low number runs of 2-3 items that take 5 months to manufacture. This was a single piece in a larger piece of equipment that I manufactured. Largest tolerance on the item was 0.0005" with true position at 0.0001". Challenging item to handle and machine
What were they parts of?
Wafer manufacturing. High heat application for the unit, part described is the main internal platter
What I'm more intrigued by is that OP didn't say that they use any kind of guide or frame to hold the power drill. Try drilling 10cm by hand straight enough that it makes sense to tap the hole.
Free hand, lots of practice. The threaded hole was to add a lift point, didn't need to be perfectly perpendicular
Killdozer2
I used to use cheapo tools, but I borrowed a Makita circular saw once and it was so nice to use in comparison that I’ve been on team teal ever since.