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Everything EMI shielded but the router's power?

Discussion in 'CNC Mills/Routers' started by FrankieD, Jul 29, 2020.

  1. FrankieD

    FrankieD New
    Builder

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    Hi all,

    I am wondering if the power line to the router needs to be shielded. I ran some shielding around mine with automotive braid shielding and then wrapped the entire line with black tape to stay in place and narrow. The problem is that the power line is now quite stiff and it is stressing the drive chain's agility a bit affecting the x-axis

    If I have all other feeds, going to each motor and limit switches, shielded and earth grounded properly (one end on each), do I even need the router to be shielded? Just curious as I am thinking about ripping out the Frankenstein cord I made for the router and replace it with flexible stranded wire like 16/2 and solder the splice in place. The router is a Makita router that only draws 6.5 amps.

    I like the idea of hanging the router power feed overhead as noted in other posts. Is that another route to support not needing it shielded if everything else is shielded?

    I look forward to your help.

    Cheers,
    Frank
     
  2. Peter Van Der Walt

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

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    Router or a VFD Spindle.
    Plain routers doesn't generate nearly as much EMI as VFDs, most people don't bother shielding router power cable. Just spacing low voltage wiring away from it usually covers it.
    If its a VFD you do need shielding

    Suspending from the ceiling gets my vote too (not for EMI, just getting the heavy cable out of the way, also keeping the cable safely away from all the sharp spinning parts too)
     
    Alex Chambers likes this.
  3. Alex Chambers

    Alex Chambers Openbuilds team
    Moderator Builder

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    I've hung the unshielded power lead for my (Chinese clone) Makita above the machine and to the front - low voltage stuff to the back of the machine. I've never had any emi issues.
    Alex.
     
    Giarc likes this.
  4. FrankieD

    FrankieD New
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    Awesome. Thanks guys!
     
    Alex Chambers likes this.

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