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Step by Step guide to a simple microcoil and cotton

Discussion in 'Tutorials' started by Romelee, Dec 14, 2013.

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  1. Romelee

    Romelee Senior Member ECF Veteran

    Dec 31, 2012
    Bournemouth, UK
    This guide is based on building a Kanger head which are used in Protanks/Evods/Davides etc etc

    Tools i use for making the coil:

    1 x 2mm jewellers screwdriver
    1 x Nail Clippers
    1 x Flat nose tweezers
    1 x Pin point tweezers
    1 x Pliers
    1 x 14 gauge Blunt Needle
    1 x 0.25 Kanthal
    1 x Blowtorch or Lighter
    1 x Organic cotton wool


    Before starting make sure your hands are clean as anything on them like grease etc will be going onto the wire and don't want that.

    Step 1: Get some 0.25 Kanthal wire, around 14cm of it and heat it up until red, takes seconds and it also takes the springiness away from the coil.


    Step 2: Wrap the coil around the 2mm jewellers screwdriver nice and tight around the edge of the screwdriver (i do around 10 turns, this should give about 2.2 ohms resistance) and then push all coils very close together with your fingers towards the jewellers screwdrivers edge so they are nice and snug next to each other and keep holding the legs tight at the same time, the legs at the end of the coil should be facing the same way as each other, facing you when finished wrapping.


    Step 3: Gently pull the coil off the jewellers screwdriver and at the same time holding the legs of the wire place into the tip of a pair of tweezers (preferably flat tweezers).


    Step 4: Once all held in place in the tweezers flame the coil until red hot and hold tight with the tweezers until cool, do this a couple of times....should end up looking like this:


    Step 5: Place the 14 gauge Blunt Needle into the centre of the coil.


    Step 6: Feed the coil legs through the centre of the head and place the 14 gauge Blunt Needle/Coil right down too the bottom of the slits of the head, You now have two wires sticking out the end of the head, one is positive, the other negative.


    Step 7: Take one of the wires (does not matter which one) and pull tight and bend over the edge of the head rim.


    Step 8: Get the other wire and slide the wire through the centre of the rubber bung and fit the rubber bung into place on the head.


    Step 9: Now pull the wire that is in the centre of the rubber bung and pull and bend to the edge of the rubber bung.


    Step 10: Now get the metal centre pin and push inside the rubber bung.


    Step 11: Now all is in place get each wire and wiggle them until they snap, this gives a nice clean snap of both wires.


    Step 12: Now that all wires are in place remove the 14 gauge Blunt Needle from the coil, You should now have a coil that is sturdy and in place on the head.


    Step 13: Place the head into a device that can check resistance to make sure all is fine, (Optional: i normally when doing this dry burn the coil a few times to burn of any impurities that may remain on the coil)


    Step 14: Now get some cotton wool and pull apart a bit that will be enough for the wick, not too much and not too less....this bit is by judgement so you need to guess right, If you use too much cotton the coil will strangle it and it won't wick fast enough, if you use to little it will wick too fast and you may get leaks, Get the cotton and roll into a tube, not too tight and not too loose.


    Step 15: Thread the cotton through the microcoil, it should not be too easy and not too hard to pull through (this normally determines whether you have made the right thickness of the cotton) Once all done make sure the coil is still in the centre of the head above the air hole, if not adjust with your tweezers.


    Step 16: Once all threaded and you are happy with it, trim the ends of the cotton too the edge of the head:


    Step 17: Optional: Soak the cotton wick with your chosen juice to speed up the wicking process up.

    Step 18: Fill your chosen tank and leave to rest for 3-5 minutes

    Step 19: Do some dry pulls to get things all working.

    Step 20: Vape away

    Removing the old cotton and cleaning the coil:

    Step 1: Take the head from the atty and hold in one hand.
    Step 2: Using tweezers or small pliers just pick little strands of cotton away, don't try and pull the whole of the cotton out in one go as it won't happen due to the cotton expanding from juice and you will put too much of a strain on the coil.
    Step 3: Keep pulling little strands until there is enough room for the rest of the cotton to come out in one hit.
    Step 4: If the coil has moved away from the center don't worry, just get your tweezers and move it back to the center.
    Step 5: Optional: Once all cotton is removed i normally give the head a little wash and blow through the top of the head so any water will come out of the bottom and then throughlly pat dry
    Step 6: Put the head onto a device to make sure all is still working well, i.e resistance.
    Step 7: Pulse the coil for about 2-3 seconds at a time just to dry out the coil, do this about 3-4 times, then pulse the coil until red hot and then when it has cooled a bit blow off any resideue, keep doing this until it looks like new again.
    Step 8: Repeat steps 14 too 20
    • Like Like x 2
  2. Julie W

    Julie W Senior Member ECF Veteran

    Aug 31, 2013
    Excellent thank you! .....bookmarked for further reference.
    Even I feel I can do this:toast:
  3. rucni

    rucni Senior Member ECF Veteran

    awesome this is something i have been meaning to look into. my only question is how do i recoil my PT3 dual coils? i havent taken any of my current store bought coils apart cause none have got to the point of not being able to be used yet.
  4. PariahNine

    PariahNine Senior Member Verified Member ECF Veteran

    Jan 13, 2014
    Michigan, USA
    Totally just rebuilt my first head using this reference. Awesome work! Thank you for your contribution!

    Sent from my Nexus 5 using Tapatalk
  5. olderthandirt

    olderthandirt Vaping Master Verified Member ECF Veteran

    Mar 28, 2009
    Willamette Valley, PNW
  6. PariahNine

    PariahNine Senior Member Verified Member ECF Veteran

    Jan 13, 2014
    Michigan, USA
    Thanks. I've actually rebuilt five. The first one ended up being 3.0 ohms, but I've got it now where I can consistently hit 1.8 ohms. Gonna invest in a vw/vv mod soon and begin experimenting with different variations.

    Sent from my Nexus 5 using Tapatalk
  7. Xtro

    Xtro Full Member

    Feb 25, 2014
    Northants UK
    Good tutorial. I've started building Protank Mini/Evod microcoils. Only tried with 28AWG. Not sure if I'd get a low enough resistance with the 32AWG I have.
    Anyhow, I usually wrap around 11 or 12 times to get a resistance of around 1.5-1.8 Ohms. I will try later with fewer turns and see how that works.
    Just one point about your method. I don't think it's necessary to dry burn the coil So long as your hands are clean and you don't leave any residue on there, it should be fine as is, and with all the wraps touching there shouldn't be any hotspots to deal with. Also, dry burning could increase the heat to the legs and burn the insulator.
  8. PariahNine

    PariahNine Senior Member Verified Member ECF Veteran

    Jan 13, 2014
    Michigan, USA
    Dry burning also helps galvanize the wire so it's less flexible and maintain its shape while threading the wick. I always dry burn in three second bursts when changing wicks.

    Sent from my Nexus 5 using Tapatalk
  9. bri315317

    bri315317 Full Member Verified Member

    Mar 20, 2014
    Upstate SC
    Thanks so much for the tut. I will for sure be doing this.
    Curious what is the diameter of the 14 gauge tool. I don't have that and would like to see if I have something similar.
  10. DetraMental

    DetraMental Vaping Master ECF Veteran

    Mar 31, 2013
    United States
    Thank you for this exceptional tutorial! I have bookmarked it as well :).
  11. kryptonicrxn

    kryptonicrxn Full Member

    Jun 13, 2013
    14ga IS the diameter in english measurement and is approx: 1.628 mm.

    Conversion Chart Gauge to Inches to Millimeters
  12. ForeverDiving

    ForeverDiving Super Member Verified Member ECF Veteran

    Beautiful tuto, many thanks! I have bookmarked it too.
  13. Tamer El-Meehy

    Tamer El-Meehy Vaping Master Verified Member ECF Veteran

    Jan 30, 2014
    Cairo, Egypt, Egypt
    Thank you very much for this tutorial..helped me move to rebuildables...any suggestions for rebuilding the aerotank coils?
  14. rucni

    rucni Senior Member ECF Veteran

    If i recall the aero tank uses the same head as the protank 3. You can use the same method to make a dc head into a single coil. I have tried and failed several times at making dc coils for the pt3 but i am sure its possible with the right tools and enough time and practice.

    Sent from my SCH-S735C using Tapatalk
  15. kachuge

    kachuge Super Member ECF Veteran

    good job,
    just waiting for supplies in the mail,
    and i'll try exactly this method.
  16. Tamer El-Meehy

    Tamer El-Meehy Vaping Master Verified Member ECF Veteran

    Jan 30, 2014
    Cairo, Egypt, Egypt
    I saw a video for a guy using a ziptie to make an oblonged shape single coil. I'll give it a try

    Sent from my iPad using Tapatalk

    SLIPPY_EEL Vaping Master ECF Veteran

    Oct 11, 2013
    Ω England Ω
    Good tutorial on the Macro Coil :)
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