12/14 free machining mild steel
I have been ask to make a custom golf putter head out of 12/14 'high speed' free machining mild steel.
What is classed a 'high speed'? Has anyone had any experiance with machining it? |
I think its 706
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http://www.ajmarshall.com/Manganese.htm
Looks like carbide mills will do it but no Rockwell hardness data to go on to be absolutely sure. Ross |
I could be wrong and you might be able to do this, but I wouldn't even think about trying it.
The surface cutting speed and chip load for steel is one, if not two orders of magnitude below what a router or spindle can commonly be set. A MM also has nowhere near the rigidity needed for machining metal - consider that a Bridgeport weighs in at 2,00-2,400# and it's top speed is around 1,000 rpm (which is almost never used). If you decide to try this, I suggest you set everything on the slowest speed, with a feed rate as slow as possible (as in 0.001-0.005" per second - but only if you can get the spindle rpm to the 400 - 500 rpm range). Even then, I'd make sure you set up plenty of guarding with plexiglass as the bit will almost surely shatter. Brian Taxachusetts |
Thanks for reply Brian,
I think the spindle will burn out at that rpm. I'll put it down to a bad idea. Thankyou once again. |
First real question should be why the heck do you need a HSS golf putter :)
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I don't know?
I have only 'played' golf once, 20 years ago it involved beer at each hole and golf buggies with a trailer full of beer to 'top up'. By the end of the game the Golf Club offered me a job to mow/slash the grass, double vision was not helping:D:o. I was given this link to a steel putter thingy. |
this guy made a cnc mill for that task, but his are made from brass
here is his site http://www.deschampsputters.com/process.html and thread on cnczone http://www.cnczone.com/forums/vertic...ill_build.html and video of machining http://www.youtube.com/watch?v=9vWqH...layer_embedded I am posting this as its very interesting and parts have a beautiful finish, you might learn something or even try machining brass on mechmate :) p.s. don't know why I remember all this stuff but 2 years ago I got cnc crazy and read all interesting stuff on the cnczone :) |
Always fancy copper head. some how it feels & sounded better than steel head.
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