Any machinist's out there?

Looking for some input about depth of cut and the such

>>1164608
You're probably going to have to be more specific

Do you want an actual machinist or a cnc button pusher?

Actual machinist. What do you use to calculate depth of cut? Or is there a calculation? All through trade school and my few years of machining, I've never come across any specific answer about figuring depth of cut.

>>1164628
Cutting tool catalogues usually contain the starting values for feeds, speeds & Ap / Ae.

>>1164582
machinist's what?

>>1164672
Luck.

>>1164628
FULL DEPTH MAX SPEED MAX FEED
ANY TOOL ANY MATERIAL ANY DIRECTION

>>1164677
I second this. Works for me every time

>>1164608
max speed

feed rate is the tool diameter in IPS, depth of cut is half the tool diameter.

works for me.

>>1164628
You use logic and experience. There's so many variables to depth of cut there's no real formula. You can run a quarter inch endmill at 20 inches a minute an inch deep in plastic but try that with steel and you'll snap it.

>>1164839
What the fuck kind of feed rate formula is that? Is all you cut plastic?

I usually just use the sfm that the manufacturer recommends for whatever material I'm working on. Start with a small depth of cut and see what happens, increase accordingly for productivity's sake.

>>1164582
I would like to be
But I cant just up and go take a college course
And I cant just buy a bridgeport and stick it in my house

Ive thought about buying a G0704 and CNCing it, but I just cant imagine dumping the same amount of money into a grizzly as I would into a real bridgeport.

Its an expensive hobby

>>1164608
Take the free online sandvik training course. You just sign up and then it has this whole thing you can go through. Its pretty insightful
http://www.sandvik.coromant.com/en-us/services/education/pages/e-learning.aspx

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>>1164839
>feed rate is the tool diameter in IPS, depth of cut is half the tool diameter.

>fly cutting at 240in/min and 2" DOC

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>>1164623

>get job as machine operator
>when people ask when i do for a ilving i tell them i am a CNC machine operator
>they look confused
>explain to them when it is
>after a year of this i just tell people i am a machinist
>now every time someone asks and i tell them i am a machinist because i dont want to spend another 20 mins explaining to them there is always a real machinist who chews me out for lying about what i do.

I got to the point where i could go in and write programs, alter speeds and feeds and knew a lot of the coding to the machines.

But im stuck living where im living because my and my wifes family have us anchored down. but fuck me i would love to move out of the hellhole that is IL and get a job as a real machinist.

Tool and Die Maker- the thinking mans machinist

Mold Maker- the thinking mans tool and die

i hate days where i have to make chips or measure something

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>>1164582

>>1164858
>Is all you cut plastic?

the max speed on the 3 axis CNC i use is 9000 rpm. i've milled mild steels with that method.

there was an actual formula i learned in engineering school, but the greybeard at my shop just told me to use>>1164839
unless i was doing something exotic. haven't had any problems so far.

>>1165068
>lemme run this 1/2" endmill at 50ipm at 1/4"DoC

>>1165205

>man, this nitronic 60 cuts like butter...

>>1164582
I only do prototype machining and CAM programming. I have yet to bother getting trained on CNC machine operation. I'd rather turn cranks on the manual knee mill.

>>1165315
>prototype machining and CAM programming

how do I into this?

>>1164608
Tool manufacturer websites are great, though I get most of my feeds directly from the catalog in the workshop.

Try WNT they are quite new user friendly or seco