Author Topic: milling and drilling  (Read 7616 times)

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Offline Marc.com

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Re: milling and drilling
« Reply #30 on: August 17, 2011, 02:11:33 pm »
Any change in OD will have to be wear in the slideways, you have to go up to tool room (Moriseki etc) lathes to get them not to cut a taper.

Marc the round columns have a problem stayng on centre when the head is raised or lowered. If it cuts on the backcut the head isn't straight.

Hi Lozza thanks for the tips, I will have to try the bar test at some point and take some measurements. But as long as I can hold a couple of hundredths over 300mm that will be good enough for bike axles and more than good for spacers.

Interesting my step father bought Chinese drill press for $100, fitted precision bearings and tuned it to make a mill for his model train parts ..... it is accurate enough to within a few microns at the drill chuck, so a lot can be achieved in the set up..... plus ditching the bearings in anything from China and Korea is a step forward.
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Offline bazza

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Re: milling and drilling
« Reply #31 on: August 17, 2011, 06:20:16 pm »
hey mark thats good enough to build chineese metisse........lol
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