Researching how to make my own tool holder (having seen the price of them). The mill I have access to uses an ISO40 taper. ISO. Excellent that's gonna be metric and sensible and... no wait... Wtf. ISO taper angle is 8.2971° (relative to the centre line of the piece).
What uncultured barbarian idiot came up with such a number...
Oh right, it's grandfathered from imperial 3.5" in a foot, or a 7:24 ratio. Sigh
@quixoticgeek Yes. But all that stuff - dialing in your mill vice, tool post height, tail stock alignment - that's the basic machining skills you need anyway. Kinda like marking out joints and sharpening you edge tools in woodworking.
@PalmAndNeedle completely agree. But anything I do has to be completable in a day. I have to leave the lathe in the condition I find it at the end of the day. So I can't spend 3 days with complex setups. Anything I can do to simplify operations helps a lot here. I'm already likely to need to buy my own chuck, so I can take the work off and keep it all concentric should things take too long. I don't wanna miss the last train cos I was aligning the tailstock.
@PalmAndNeedle yep. But given I live in an apartment. It's the best option I have if I want to do machining. It's also a far better set of tools than I might have if it was my own work shop.
@PalmAndNeedle massively so. Makes fixturing that extra bit harder too. I'm hoping if I have my own chuck, I can always take a part off the lathe and put it back without losing concentricity. As long as i or noone else fiddled with the tailstock...
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