Welcome to Our Community

Some features disabled for guests. Register Today.

Material choice

Discussion in '3D printers' started by Benjamin Vg, Jan 15, 2020 at 12:57 PM.

  1. Benjamin Vg

    Builder

    Joined:
    Jan 13, 2016
    Messages:
    80
    Likes Received:
    2
    Hello,

    I have tried to search by myself but I really don't know anything about 3d printing.
    I would like to print this piece but adapted to my router dimension but I don't know the material I should use.
    I plan to machine some aluminium with my cnc and that is the reason why I need this upgrade so I need a very rigid material.

    Regards,

    Benjamin V.
     
    #1 Benjamin Vg, Jan 15, 2020 at 12:57 PM
    Last edited: Jan 15, 2020 at 1:38 PM
  2. Alex Chambers

    Alex Chambers Master
    Moderator Builder

    Joined:
    Nov 1, 2018
    Messages:
    1,129
    Likes Received:
    537
    Hi @Benjamin Vg, you left out the link to the part you want to print.
    Alex.
     
  3. Benjamin Vg

    Builder

    Joined:
    Jan 13, 2016
    Messages:
    80
    Likes Received:
    2
  4. Alex Chambers

    Alex Chambers Master
    Moderator Builder

    Joined:
    Nov 1, 2018
    Messages:
    1,129
    Likes Received:
    537
    Hi @Benjamin Vg, do you intend to 3d print the whole mount? I 3d printed a sleeve to fit my router to the Openbuilds metal mount in PLA, but this would be too flexible for the whole mount.
    Alex.
     
  5. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Resident Builder Project Maker Builder

    Joined:
    Mar 1, 2017
    Messages:
    2,558
    Likes Received:
    1,185
    If I really had to, I would use a filled filament (Carbon Fiber PETG for example, or if you don't have that available, PETG. ABS is too flexible, PLA too brittle)
    BUT i would then beef up every direction and use at least two of those clamps (one near top of spindle, one near bottom)
    And I would make cutting an Aluminum one my first project

    Alternatively, shimmy up a temporary mount (See the image gallery on Adjustable Strapping Clamp 3-5/16" to 4-1/12" (84 to 108mm) for one possible idea) to get it mounted long enough to cut an Aluminum one instead
     
    Alex Chambers likes this.
  6. Benjamin Vg

    Builder

    Joined:
    Jan 13, 2016
    Messages:
    80
    Likes Received:
    2
    In fact, it was my first idea to make it in aluminium so I have made a temporary mount in wood but now that I am trying to cut aluminum it look too flexible to really cut it correctly. It is not rigid enough it it makes a lot of vibrations.
    After that it is maybe just because I didn't have the correct parameters or I didn't use the correct bit I don't know...

    My latest test have been done with the following parameters:
    • Bit 6mm
    • RPM: 12 000
    • Feedrate 100 mm / min
    • Plungerate 460mm / min
    • Ramp: 20 mm
     
  7. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Resident Builder Project Maker Builder

    Joined:
    Mar 1, 2017
    Messages:
    2,558
    Likes Received:
    1,185
    Are you sure its the mount that is giving, and not deflection in one of your axes?

    Turn everything off
    Firmly grip the end of the endmill by hand and give it a push from each size, North,South,East and West, and see in which directions it can move, then follow that to see if anything else is loose

    Other suggestions:
    - 6mm endmill, might have a little less forces working against you with a smaller endmill - though it could also be the exact opposite (6mm endmill more rigid) - that ones up for experimentation. If you have a really stiff frame, bigger tools make sense, for a flimsier frame, the lower loads from a smaller diameter endmill helps.
    - Depth of cut? Smaller = less loads. A faster feedrate, with a smaller depth of cut, sometimes works better

    Specialist SharkBits available at the OpenBuildsPartstore: CNC Router Bits - Metal Cutting - OpenBuilds Part Store - cuts like butter, special ZrN Armor coating prevents alu from gumming up and sticking to the endmill and keeps it sharp longer

    Available for other materials too: CNC Router Bits - OpenBuilds Part Store (Checkout the nice blue NanoShield ones (; )
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice