Home Workshop Mill Feeds & Speeds

[shred]

That's cos you have to ask for a 'slot drill'

;D Regrettably that doesn't work either.

Here's a couple links as examples:

http://www1.mscdirect.com/eCommerce/SearchServlet?scrNtt=slot+drill&x=13&y=10&scrNtk=default

http://www1.mscdirect.com/eCommerce/SearchServlet?scrNtt=end+mill&x=13&y=10&scrNtk=default

You'd think that with 20,000 different varieties of end mill on hand they'd stock at least one lousy slot drill, but nooooooo.....

 

[DaveH]

Shred,

Try this: http://www1.mscdirect.com/cgi/NNSRI...re=ItemDetail-_-ResultListing-_-SearchResults


Dave

 

[shred]

Shred,

Try this: http://www1.mscdirect.com/cgi/NNSRI...re=ItemDetail-_-ResultListing-_-SearchResults


Dave

Sure enough, doesn't say "Slot Drill" or "Slot mill". That was my point. We don't call them that ovah here.

 

[Deanofid]

They are end mills here, Dave. Center cutting or non-center cutting. Not slot drills or slot mills.
Who did people in S. Africa buy light bulbs from before Edison came along, anyway?

Someone once asked Edison (this is the guy all the Americans think invented the incandescent lamp)

 

[DaveH]

Shred,

Aaaah, my fault I thought you meant they didn't stock them. ;D

Dave

 

[DaveH]

Dean,

May be (just guessing) if they are centre cutting they are made to slot drill specifications.

Who did people in S. Africa buy light bulbs from before Edison came along, anyway?

Sir Joseph Swan

 

[tel]

They are end mills here, Dave. Center cutting or non-center cutting. Not slot drills or slot mills.
Who did people in S. Africa buy light bulbs from before Edison came along, anyway?

;D 22 inventors before Swan and Edison! Worth a read!

http://en.wikipedia.org/wiki/Incandescent_light_bulb

 

[Captain Jerry]

;D 22 inventors before Swan and Edison! Worth a read!

http://en.wikipedia.org/wiki/Incandescent_light_bulb

A good read indeed. Gotta love that Sprengle Pump!

 

[Deanofid]

Dean,
May be (just guessing) if they are centre cutting they are made to slot drill specifications.

Or maybe, like with so many things, some other country just calls center cutting end mills by a different made up name.

Sir Joseph Swan

Riiiight, as in EDIswan.

 

[rake60]

If the material and cutter's manufacture's claim of it's capability are known, it's simple.

Look it up in the Machinery's Hand Book and you'll find the perfect answer.
That answer will probably NOT work.

Don't blame the engineers who came up with that perfect answer.
If you do, you'll end up listening to a 3 hour long lecture explaining why it
SHOULD have worked.
:toilet:

Just listen to the machine.

If it sounds like your wife on a Friday evening after you've stopped off with a
few guys from work on your way home at a local pub to discuss the week,
back off a little.

If it sounds like your wife on a walk through the shopping mall on a Sunday
afternoon when you'd much rather be in the shop, step it up a bit.

Rick

 

[dvbydt]

This is a chart I drew up years ago. It gets me in the right ball park. It's not meant to be definitive, for example roughing milling cutters can be pushed a lot more, but for my machines, it gets me started.

Ian

 

[Tin Falcon]

I was told by Brian Barker that speeds and feeds should be used as published or calculated.
Brian is the president of artsoft ( Mach 3)and has boocoo machining experience w cnc.
Ricks comments on the other thread of the metal talking to you ,crying for more or back off is also spot on from an experienced hand.
the difference between home machines and for money machines is
1) the cutter or tooling some of the industrial stuff is designed for high power high speed machines.
2) the machines home machines just do not have the power,190 - 500 watts instead of 5 HP( 3.7KW )
3) most home machines do not run flood coolant.
4)We are not concerned a lot of output and time not trying to make two widgets a minute.
so what is the main difference between home and industry? depth of cut, how much material can you take in one pass.
The basics are foundational. use a sold safe setup and go from there.
Tin

 

[steamer]

What Tin and Rick Said!...

There is no substitute for mass and rigidity...It really makes a HUGH difference.

Dave

 

[Maryak]

There is no substitute for mass and rigidity...It really makes a HUGH difference.

Dave

I think I'll leave this one alone :

 

[tel]

You won't get it massive and rigid by leaving it alone.

 

[Maryak]

tel,

Never heard of a "Thoughty." ???

 

[steamer]

I think I'll leave this one alone :

You won't get it massive and rigid by leaving it alone.

Ahhhh.....put a man on an island, and he's got one thing on his mind... ;D

 

[TroyO]

Ahhhh.....put a man on an island, and he's got one thing on his mind... ;D

Coconuts?


;-P

 

[DaveH]

TroyO

You're nuts Rof}

Just joking - good one :big:

Dave