Gallery, Projects and General > How do I??
How do I - locate centre and position end mill? - basic milling.
raynerd:
Hey Darren, you won`t believe me but that has helped a lot - I guessed that that was the score but wasn`t 100%. Would you then stand the piece vertically and mill the top with an end-mill or would you overhang the piece horizontally over the edge off the vice and run the endmill down the side?
BTW - just looked at your T-nuts thread again - excellent, certainly a neat little project I may try first when it comes to it.
Chris
Darren:
It all depends on the size of the part, you want to look for max rigidity. Any vibration will cause problems.
If it vibrates enough major problems like a snapped milling cutter flying at frightening speeds across the workshop, maybe towards you !!
Don't ask me how I know .... :(
matnewsholme:
Chris
a decent start would be to get a copy of 'milling- a complete course) by harold hall from the wokshop practice series of books. It got me going with your mill and it starts from basics and gradually builds up in complexity. only about six quid or website is currently doing a buy 2 get one free offer so you could get the lathe-complete course and new mini lathe books at same time for about 12 quid. lots of info in there to get you going
Matt
kvom:
--- Quote ---Would you then stand the piece vertically and mill the top with an end-mill or would you overhang the piece horizontally over the edge off the vice and run the endmill down the side?
--- End quote ---
You can do either. I get a better finish from the end flutes than the side flutes, so that is my preference. However, if the piece is too long or too thin then the side should/must be used.
Your bracket doesn't look as if it needs a high level of precision, so I think you should be able to make it work once you know how to operate the mill safely, as John says.
One approach on the slots is to drill a series of holes, then join them with an endmill.
The central hole is likely larger than any drill you'll have, so it will have to be made with either a boring bar or a rotary table.
For the corner angles you will need something (e.g., angle bar or protractor) to set the piece in the vise correctly.
raynerd:
Cheers, Matt. I will do that - infact I may nip to rdgtools after work or Sat and pick up a copy.
Kvom - when you say a boring bar, on the lathe in a 4 jaw?
Chris
EDIT: I presume it would be easier on the mill :http://www.jjjtrain.com/vms/mill_boring/mill_boring_00.html
PS Thanks john for the links - very very good!
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