Label things before you install the base

Discussion in 'Build Help' started by Ephemeris, Apr 7, 2016.

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  1. Ephemeris

    Ephemeris Well-Known Member

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    I was about to install the base yesterday and I realized I was about to make a big mistake. Once the base is in place identifying which end-stop is which, which PT100, which stepper, which cooling fan, which hot end power, etc. is going to be a frustrating nightmare.

    I recommend anyone just getting to this point to label the ends of all of the wires before you start buttoning things up. It'll save time during assembly now, and lots in troubleshooting/maintenance later!
     
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  2. Alex Stevenson

    Alex Stevenson Well-Known Member

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    Thanks. That's perfect timing for me, as I hope to be getting towards that stage this weekend. I'm also slightly concerned that I'll be able to physically reach all of the cables from underneath; looks fiddly when over watched people plugging and unplugging them.

    I'm also wondering which cables I should braid separately to keep things tidy...
     
  3. Ephemeris

    Ephemeris Well-Known Member

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    For what it's wort, I braided pretty much everything. For two wire items like the fans, I popped one pin out of the connector, made the wires into a loosely twisted pair and then reinserted the pin. For the steppers, I popped out two pins from the same winding and loosely weaved the two twisted pairs around each other and then reinserted the pins. If you haven't memorized the pin colors on the steppers, take a photo first so you can't make a mistake when you reinstall the pins.
     
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  4. Old_Tafr

    Old_Tafr Well-Known Member

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    Although not perfect, if you follow the instructions to put specific wires in the braid then the instructions to connect to the Rumba follow on from that. Four sets in total. As long as you can see the end of each braid looking into the hole above the Rumba then you can identify each set of connections and where they come from. Use the electrical diagram of the Rumba (I printed it A4 size) to note down which wires you have connected, and to resolve the confusion when some things are numbered from 0 and some from 1, like the motor connections. The only real confusion I remember was the X and Y limit (micro) switches, (says something about "thinner" wires but there are not any "thinner" wires) this you can sort by where they come from and the WiKi should have enough information now.
     
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  5. Miasmictruth

    Miasmictruth Well-Known Member

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    I agree with Ephemeris, labling is very important!

    I put everything in braded sleaving after seeing some of what Livi did. If you go the sleaving route, take a picture of the connector pop all the pins and put a little blue tape on the end. It will make the braded sleaving and shrink wrap much easier to slide on.
     

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  6. Alex Stevenson

    Alex Stevenson Well-Known Member

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    Wow, @Miasmictruth that's truly a work of art - the labels on the braid look really professional too.. I'd be chuffed if mine looks a fraction as good as that when it's built.
     
  7. Kanedias

    Kanedias Well-Known Member

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    I was able to work though it without labelling but I can certainly put a note on the wiki that labelling everything makes things easier.
     
  8. orcinus

    orcinus Well-Known Member

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    Small tip i apply on all my builds - get a pack of multicoloured heat-shrink tubings.
    Instead of labeling, add a ring of tubing to the ends of each cable, colour coded per axis.

    Convention i use is:
    Red - X
    Green - Y
    Blue - Z

    Then for extruder and heated bed cabling White for E and Yellow for B. For second extruder, if you have one, you might use Orange, or Black.
     
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  9. Old_Tafr

    Old_Tafr Well-Known Member

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    Coloured cable ties also handy and very cheap, buy some before you start.
     
  10. Miasmictruth

    Miasmictruth Well-Known Member

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    Thanks :)
     
  11. Sgllama

    Sgllama Active Member

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    Another way to label the cables is to use the ties with flat label areas http://www.amazon.co.uk/AmgateEu-Wr...&redirect=true&ref_=oh_aui_detailpage_o03_s00 : I'd used red tape to bundle the ends together when pulling them through the braiding down the spine IMGP7154.JPG then added labels as the ends were unbundled:
    IMGP7161.JPG IMGP7165.JPG IMGP7170.JPG

    The end result is a bit clunky but it was very easy to do and didn't get in the way when I decided to redo some connections and common them together:
    IMGP7173.JPG IMGP7175.JPG IMGP7187.JPG
     
  12. Sgllama

    Sgllama Active Member

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    @Miasmictruth - that is a superb job; is this wiring task the sort of thing that you do often?

    I ask only because - as my photos clearly show - I've really only used tools and materials that I already had to hand when going beyond slavishly following the build instructions: as I don't do many cabling tasks the result is as you see. Which has me thinking about how far one ought to go with aquiring tools for this sort of job, to get a result one'll be satisfied with: if there isn't someone you can borrow from, you can spend a fair bit of money getting all the extras (it would have been neater if I'd bought the proper crimps and the crimp tool to suit...).
     
  13. Miasmictruth

    Miasmictruth Well-Known Member

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    The Braided Mesh was really inspired by Livi, it doesn't cost a lot but its a bit time consuming. I do love the result though I think it was well worth it as the mass of stepper motor cables it crazy and it also protect the wires somewhat from vibration and rubbing damage. You can get shorter amounts for less but I plan on using it for other things too.

    http://www.amazon.com/PET-Expandabl...&redirect=true&ref_=oh_aui_detailpage_o06_s00

    http://www.amazon.com/PET-Expandabl...psc=1&redirect=true&ref_=od_aui_detailpages00

    http://www.amazon.com/PET-Expandabl...&redirect=true&ref_=oh_aui_detailpage_o09_s00


    For Shrink Wrap I really like this stuff, it has a bit of adhesive the melts when its heated to help it stay in place, there is cheaper stuff but you get a lot with this.

    http://www.amazon.com/Dual-Wall-Adh...psc=1&redirect=true&ref_=od_aui_detailpages00


    The Labels, this is over board if you just want labels for the big box but I use the l labeler for a lot of other stuff too. For 46 bucks, I dont think you can beat it, has many options for orientation size ect. and intuitive to use I never even look at the instructions.

    http://www.amazon.com/DYMO-Industri...&redirect=true&ref_=oh_aui_detailpage_o07_s00

    For wire labels I like 3/4inch Fabric, its wide enough, and the fabric labels are really tough.

    http://www.amazon.com/DYMO-RhinoPRO...&redirect=true&ref_=oh_aui_detailpage_o03_s00
     
  14. Miasmictruth

    Miasmictruth Well-Known Member

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    Oh by after doing this by the way, you could probably get away with just the 1/4 braided mesh you don't need all 3. Its a bit overkill for just 2 wires but would save some cash.
     
  15. orcinus

    orcinus Well-Known Member

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    Yeah, coloured cable ties work too.

    I'd advise against going the full braid + heatshrink way, based on previous experiences.
    I went that route more than once, then kicked myself for doing it every single time i had to debug a bad wire, rewire something, extend a cable etc. It looks very nice and neat and soothes your OCD, but in the end turns out to be wasted effort.

    At least that was my experience. You mileage may vary of course.
     

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