Re: Feeds and speeds. Some tips for a newbie please!
Little machine shop can now suck my plums!
Just had a new 2mm flat 4fl endmill delivered.
Out of the box and broken in 3 minutes!
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Re: Feeds and speeds. Some tips for a newbie please!
Quote:
Originally Posted by
Dave_stoke
Little machine shop can now suck my plums!
Just had a new 2mm flat 4fl endmill delivered.
Out of the box and broken in 3 minutes!
Sent from my F8331 using Tapatalk
What speeds and feed? What material?
4 flute?
1 Attachment(s)
Re: Feeds and speeds. Some tips for a newbie please!
Quote:
Originally Posted by
Chaz
What speeds and feed? What material?
4 flute?
Exactly this Attachment 25105
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Re: Feeds and speeds. Some tips for a newbie please!
Quote:
Originally Posted by
Dave_stoke
I wouldnt be using 4 flute for brass / alu. 3 at most, 2 is better. Did it snap on first engagement or did it cut for a bit?
Re: Feeds and speeds. Some tips for a newbie please!
Quote:
Originally Posted by
Chaz
I wouldnt be using 4 flute for brass / alu. 3 at most, 2 is better. Did it snap on first engagement or did it cut for a bit?
It got this far but very aggressive. I suppose I should have dragged the feed slider down. But a calculator should be accurate no? https://uploads.tapatalk-cdn.com/201...caf082aaa2.jpg
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Re: Feeds and speeds. Some tips for a newbie please!
Quote:
Originally Posted by
Dave_stoke
From the pic, it looks like you plunged directly into the stock or did it do a helix down? If you plunged then that would be an issue, not the best way to engage a cutter into material. When I cut at new speeds I turn the feed down to 10% and then ramp up once I have done the helix down and then started to make the cuts I expect. Sound / vibration / noise is key.
Re: Feeds and speeds. Some tips for a newbie please!
Quote:
Originally Posted by
Chaz
From the pic, it looks like you plunged directly into the stock or did it do a helix down? If you plunged then that would be an issue, not the best way to engage a cutter into material. When I cut at new speeds I turn the feed down to 10% and then ramp up once I have done the helix down and then started to make the cuts I expect. Sound / vibration / noise is key.
It's actually a helix entry.
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Re: Feeds and speeds. Some tips for a newbie please!
Quote:
Originally Posted by
Dave_stoke
It's actually a helix entry.
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Material looks a bit gummy. Did it clog up the bit? Id say 4 flute is to blame here (IMHO / 2p).
Re: Feeds and speeds. Some tips for a newbie please!
Quote:
Originally Posted by
Chaz
Material looks a bit gummy. Did it clog up the bit? Id say 4 flute is to blame here (IMHO / 2p).
Honestly I started with 4fl when I got the machine, this was done with 4fl 2mm a while ago. But without using the calc https://uploads.tapatalk-cdn.com/201...ba0600c1d5.jpg
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Re: Feeds and speeds. Some tips for a newbie please!
To me (and the pics arent very clear) it looks like the tool lacked lubrication and/or ability to clear material fast enough. A 2 flute is more forgiving.