Yamaha titanium wheel spindles

Oh what fun! drilling titanium is not the easiest thing in the world, it overheats easily so you have to flood it with coolant, but to make life more interesting the swarf clogs the flukes stopping the coolant getting down the hole and compounding the overheating issue. So, without centre fed drills (which i can’t afford and anyway my machinery wouldn’t support it), the way to do it is drill 1-2mm then withdraw the drill, clear the flukes, get lots of coolant up there and back in again, repeat 200 times!

boring - a day full of fun!

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