584,826 active members*
5,275 visitors online*
Register for free
Login
Results 1 to 4 of 4
  1. #1
    Join Date
    Feb 2011
    Posts
    0

    delrin. how fast is too fast?

    Here at the sign shop, we wanted to try and machine a large piece of delrin...
    But we are unsure of how hard to run the router.
    5/16" cutter, low helix...max 24k spindle...
    We figured 15k at 60 IPM, one diameter deep would be fine, multiple steps to finish.... but the manager wants a fraction of that.
    Whats the point of a high speed machine if your going to run it at a .001" chipload? (well something close to that....)
    Where to start for speeds and feeds?
    Thanks for reading,
    frank

  2. #2
    Join Date
    Oct 2005
    Posts
    672
    [nomedia="http://www.youtube.com/watch?v=Uh4JzgDrykg"]YouTube - CNC machining delrin[/nomedia]

    Here's a video of a delrin part I made for a customer. Max rpm is 7500 in this program. I think the feed was at least 100ipm.

  3. #3
    Join Date
    Nov 2010
    Posts
    0

    Wink You are in the Ballpark

    10,000 to 15,000 RPM at 80-120 IPM roughing. Blow cold air on the cutter. Take less in Z,~.200 per pass and work from the outside inward. Delrin will chip off the corners if machined from inside to outside. Leave ~.010 for cleanup in XYZ and go about 40 IPM. Tool must be sharp!
    Dan

  4. #4
    Join Date
    Feb 2011
    Posts
    0
    Thanks guys. I imagine a roughing pass is key to a good finish, which is a major goal. Even feeding it slow you can hear the chips rattling around in there.
    and I mean slow.
    100 ipmR and then even 40 ipmF should save a ton of time and still give a good finish...

Similar Threads

  1. Lazy Cam not posting Fast Travel as Fast Travel
    By astainless in forum Uncategorised CAM Discussion
    Replies: 0
    Last Post: 02-24-2010, 09:31 PM
  2. need help fast pls
    By kkgas in forum Commercial CNC Wood Routers
    Replies: 2
    Last Post: 02-03-2010, 07:29 PM
  3. Need help Fast on 540
    By gunlocators in forum Gecko Drives
    Replies: 14
    Last Post: 10-07-2008, 04:30 PM
  4. RFQ 5/16" black delrin - laser or waterjet cut - fast turnaround...
    By InspirationTool in forum Employment Opportunity
    Replies: 1
    Last Post: 07-11-2007, 07:51 PM
  5. How Fast is too fast?
    By lgalla in forum Linear and Rotary Motion
    Replies: 2
    Last Post: 04-29-2007, 01:38 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •