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Thread: Router Bits and EndMills: Pictures, Descriptions, and Uses

  1. #265
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    Default Re: Router Bits and EndMills: Pictures, Descriptions, and Uses

    Quote Originally Posted by ifeliciano View Post
    Ouch!. $150.
    That's a cheap one...



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    Default Re: Router Bits and EndMills: Pictures, Descriptions, and Uses

    My 4'x8' table has a Bosch Colt motor (1hp, 16,000 - 35,000 rpm, 1/4" collet). I have been cutting wood with it and would now like to cut some thin mild steel sheet (< 26ga) and some 6061-T6 aluminum sheet (< 0.040) with it.

    What bits should I use (specifically)?
    What rpm?
    What feed rate?

    The table doesn't have a vacuum surface so I like to use down-cut bits to keep from lifting the sheet.

    Thank you for your time,
    Dave



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    Default Re: Router Bits and EndMills: Pictures, Descriptions, and Uses

    Quote Originally Posted by davecove View Post
    My 4'x8' table has a Bosch Colt motor (1hp, 16,000 - 35,000 rpm, 1/4" collet). I have been cutting wood with it and would now like to cut some thin mild steel sheet (< 26ga) and some 6061-T6 aluminum sheet (< 0.040) with it.

    What bits should I use (specifically)?
    What rpm?
    What feed rate?

    The table doesn't have a vacuum surface so I like to use down-cut bits to keep from lifting the sheet.

    Thank you for your time,
    Dave
    I think for steel, you may have issues with the too high a spindle speed and not enough power. For the 6061, I have some parameters listed in the first couple pages (and in the descriptions in the videos), and I'd use a single-flute spiral O.



  4. #268
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    Default Re: Router Bits and EndMills: Pictures, Descriptions, and Uses

    These bits are made for cutting steel
    https://www.toolstoday.com/cnc-route...end-mills.html

    You're going to need to take really light passes, and keep it lubricated.

    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)


  5. #269
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    Default Re: Router Bits and EndMills: Pictures, Descriptions, and Uses

    Quote Originally Posted by ger21 View Post
    You're going to need to take really light passes, and keep it lubricated.
    My first project is cutting decorative shapes out of 31ga galvenized steel roofing. Do I still need to lubricate? Or just watch my feed speeds?

    Dave



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    Default Re: Router Bits and EndMills: Pictures, Descriptions, and Uses

    I would lubrication.

    http://www.cnczone.com/forums/diy-cnc-router-table-machines/140832-cnc-software.html


  7. #271
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    Default Re: Router Bits and EndMills: Pictures, Descriptions, and Uses

    Hopefully this is a quick one for a guru..

    Buddy needs 3/16 acrylic cut with a 20deg edge. He has given me a 20 deg, tapered endmill, 3 flute. At the tip it is 0.125" with a 0.500" depth/cutting edge
    https://www.mcmaster.com/#8936a971/=1ckjmzx

    What would be a good starting point for Feed and Spindle RPM (I'm using Bosch 1617 router). He really hasn't given me much scrap for test cuts so I would like to at least get in the parking lot, if not the ballpark before I test.



  8. #272
    Community Moderator ger21's Avatar
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    Default Re: Router Bits and EndMills: Pictures, Descriptions, and Uses

    I would rough cut it a little oversize with a 1/4" 1 or 2 flute upcut, to provide clearance for the chips. Otherwise, you'll likely get a lot of melting.
    Set the router to it's lowest rpm, and somewhere around 100ipm.

    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)


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    Default Re: Router Bits and EndMills: Pictures, Descriptions, and Uses

    I had some aluminium profiling and pocket to do in 1/8 alu. For this I usually use a yonico 31011-SC 1/8 cutter for or Onsrud 63-610 o-flute when I need better surface finish.

    I decided to give a try to HRC tools single flute cutters since I'm using their spot drills and chamfer cutters since one year and they do a decent job. I ordered two of their 3.5mm, 10mm LOC cutter. It is about the same price as Yonico and half the Onsrud.

    First, one is really 3.5mm the other is a couple thou off more like 3.4mm... Not a really good start.

    For pocketing, it does an ok job when climb cutting but seems to tears material instead of cutting it when doing conventional cutting. A first for me...

    When profiling it makes the same sound as a dull cutter and I ended up with welded aluminium on the cutters. 30 bucks wasted.

    I took an old Yonico to finish the job and I did manage to finish the job even if the cutter was a little bit dull.

    The moral of this story, stay with trusted brands.



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Router Bits and EndMills: Pictures, Descriptions, and Uses

Router Bits and EndMills: Pictures, Descriptions, and Uses

Router Bits and EndMills: Pictures, Descriptions, and Uses