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  1. #11
    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

  2. #12
    Chaz's Avatar
    Lives in Ickenham, West London, United Kingdom. Last Activity: 3 Weeks Ago Has been a member for 9-10 years. Has a total post count of 1,600. Received thanks 110 times, giving thanks to others 69 times.
    Quote Originally Posted by Dave_stoke View Post
    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?

  3. #13
    Quote Originally Posted by Chaz View Post
    What speeds and feed? What material?

    4 flute?
    Exactly this Click image for larger version. 

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  4. #14
    Chaz's Avatar
    Lives in Ickenham, West London, United Kingdom. Last Activity: 3 Weeks Ago Has been a member for 9-10 years. Has a total post count of 1,600. Received thanks 110 times, giving thanks to others 69 times.
    Quote Originally Posted by Dave_stoke View Post
    Exactly this Click image for larger version. 

Name:	Screenshot_20181115-122507.jpeg 
Views:	132 
Size:	58.0 KB 
ID:	25105

    Sent from my F8331 using Tapatalk
    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?

  5. #15
    Quote Originally Posted by Chaz View Post
    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?

    Sent from my F8331 using Tapatalk

  6. #16
    Chaz's Avatar
    Lives in Ickenham, West London, United Kingdom. Last Activity: 3 Weeks Ago Has been a member for 9-10 years. Has a total post count of 1,600. Received thanks 110 times, giving thanks to others 69 times.
    Quote Originally Posted by Dave_stoke View Post
    It got this far but very aggressive. I suppose I should have dragged the feed slider down. But a calculator should be accurate no?

    Sent from my F8331 using Tapatalk
    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.

  7. #17
    Quote Originally Posted by Chaz View Post
    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.

    Sent from my F8331 using Tapatalk

  8. #18
    Chaz's Avatar
    Lives in Ickenham, West London, United Kingdom. Last Activity: 3 Weeks Ago Has been a member for 9-10 years. Has a total post count of 1,600. Received thanks 110 times, giving thanks to others 69 times.
    Quote Originally Posted by Dave_stoke View Post
    It's actually a helix entry.

    Sent from my F8331 using Tapatalk
    Material looks a bit gummy. Did it clog up the bit? Id say 4 flute is to blame here (IMHO / 2p).

  9. #19
    Quote Originally Posted by Chaz View Post
    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

    Sent from my F8331 using Tapatalk

  10. #20
    Chaz's Avatar
    Lives in Ickenham, West London, United Kingdom. Last Activity: 3 Weeks Ago Has been a member for 9-10 years. Has a total post count of 1,600. Received thanks 110 times, giving thanks to others 69 times.
    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.

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