Microcoil Pictorial - Simple
Page 1 of 10 12345 ... LastLast
Results 1 to 10 of 97
Like Tree291Likes

Thread: Microcoil Pictorial - Simple

  1. #1
    Double Guru Verified Member
    ECF Veteran
    Bronze's Avatar
    Join Date
    Aug 2012
    Location
    Wake Forest, NC
    Posts
    22,591

    Default Microcoil Pictorial - Simple

    Because rebuildables are so popular these days I thought I would include a simple microcoil build on the HHV subforum that can be used on most any rebuildable including the Kayfun. It is a simple microcoil and represents the most common microcoils you will find on rebuildables. There are countless variants to be sure but this build will work wonderfully in most cases. It yields aprox 2.0 ohms. You can adjust your resistance by substituting with 28ga wire, using less wraps, or making it a smaller/larger diameter. The majority of microcoils are made from 28 and 30ga wire. 32+ gauge is too thin. 26- gauge takes a long time to heat up. This build is designed for regulated mods (not subohming).

    30ga, 10 wraps, 2mm ID ='s aprox 2.0 ohms
    28ga, 10 wraps, 2mm ID ='s aprox 1.5 ohms
    Reduce to 8 or 9 wraps for less resistance (aprox 0.1 - 0.2 ohms per wrap)
    Use smaller diameter ID for less resistance, larger ID for more resistance.



    STEP 1

    You will need the following: 30ga kanthal wire (aprox 5 - 6"), 2mm microdriver (or 5/64th inch drill bit), phillips screwdriver, scissors, nail clippers, tweezers.







    STEP 2

    Hold one end of the wire against the microdriver (or 5/64ths drill bit) leaving a tag about 3/4" long under your thumb:







    STEP 3

    Make ten wraps making sure the tags point in opposite directions when finished. Don't worry about making the coil pretty at this point. We'll clean it up later.







    STEP 4

    Compress coils together. Release.







    STEP 5

    Getting prettier! Ready to put on the device.







    STEP 6

    Place coil between the connecting screws...legs on the bottom. Keep the coil on your microdriver throughout the tightening process to prevent coil distortion. Wrap first leg around terminal no more than one revolution. You don't want to stack the leg around the screw...one strand width is all you need under the screw. Tighten. Repeat with second leg.
    IMPORTANT: LIFT COIL OFF OF AIRHOLE TO PREVENT SHORTING.








    STEP 7

    Getting there! Trim the legs with nail clippers as close to the screw as you can get. You can also twist the wire till it breaks.







    STEP 8

    Now we're going to pretty up the coil by compressing the wraps together. Start by getting your coil glowing red.







    STEP 9

    Release the fire button (DO NOT FORGET TO RELEASE THE FIRE BUTTON), then gently squeeze the coil together with tweezers and hold for about five seconds while it cools. Repeat this glow-compress cycle a couple more times until your coil has no gaps in it. REMEMBER: RELEASE THE FIRE BUTTON BEFORE YOU GRAB THE COIL WITH YOUR TWEEZERS!!!







    STEP 10

    Your microcoil is now ready to be wicked. Notice the microcoil is centered between the screws and lifted 1 - 2mm above the airhole









    STEP 11

    Make your wick. I use sterile or organic cotton ball here (I'll show silica at the end of this pictorial). Japanese cotton and Rayon are also excellent alternatives. Pull a piece of the cotton so the strands run lengthwise. How much to use? Try to use the amount in the photo best you can judge and adjust as you learn. After extensive study, more tends to be better than less. You want enough so it drags through the coil but doesn't pull the coil out of place.







    STEP 12

    Roll one end tightly for threading in the coil.







    STEP 13

    Feed the wick through the microcoil and pull through. Again, you want to feel some drag as you pull it through but you don't want to be so tight that it pulls your coil out of place.







    STEP 14

    Here's what it should look like after you have wick pulled through.







    STEP 15

    Trim wick on both sides. Overall length should be aprox the overall width of the base (or a hair longer is OK). Too long is as bad as too short. Cut to length as shown in photo.









    STEP 16

    Put a couple drops of e-liquid on each end of the wick to saturate.







    STEP 17

    Paste the wick to the sides of the deck. DO NOT (I repeat), DO NOT shove the wick into the juice channels. Simply lay them on top.









    STEP 18

    Reassemble, fill, and enjoy!





    SILICA WICK

    If you prefer silica, make yourself a fish tape (a piece of kanthal folded over). Feed it through your coil (photo shows a loose coil). Slip the silica through the looped end. Pull silica through coil (keep your fingernail over the trailing edge of the coil so it doesn't pull away). Trim to width of the Kayfun base (23mm). You're good to go. I use two strands of 1mm silica so that after it is pulled through the coil you are left with four strands. It's a tight fit but it wicks wonderfully.

    Last edited by Robino1; 10-22-2014 at 10:52 PM. Reason: Changes made per OP request :)
    "The fate of unborn millions will now depend, under God, on the courage and conduct of this army...we have therefore to resolve to conquer or die." General Washington July 2, 1776

  2. #2
    Ultra Member Verified Member
    Supporting Member
    LAwaters's Avatar
    Join Date
    Feb 2014
    Location
    Geek gal from around Philly, PA
    Posts
    1,671

    Default

    Excellent tutorial, Bronze! Clear, easy to follow, and great pics. Thanks for this.
    VapinBill, Bronze, Chakris and 2 others like this.

  3. #3
    Full Member Verified Member
    Join Date
    Feb 2014
    Location
    PA, United States
    Posts
    126

    Default

    I thought that 2mm wasn't considered a microcoil according to the chart that is floating around?

    2mm would fall under "mini" which is something like 2.5 mm down to 1.6. "Micro" is 1.5 to 1.1, and "nano" is ~1mm.
    VapinBill, Bronze, Chakris and 2 others like this.
    Favs: Juice Mafia: Lemon Meringue Pie --- Pink Spot: Peanut Butter, Pink Spot, Gummy Bear --- Mt. Baker Vapor: Dutch Apple Pie, Morning Vape, Butterscotch, Cinnamon Roll, Orange Dream Bar, Sticky Bun --- Killer Juice: Boblo's Vanilla Custard

  4. #4
    Double Guru Verified Member
    ECF Veteran
    Bronze's Avatar
    Join Date
    Aug 2012
    Location
    Wake Forest, NC
    Posts
    22,591

    Default

    Quote Originally Posted by Dochartaigh View Post
    I thought that 2mm wasn't considered a microcoil according to the chart that is floating around?

    2mm would fall under "mini" which is something like 2.5 mm down to 1.6. "Micro" is 1.5 to 1.1, and "nano" is ~1mm.
    Who makes up these rules? Probably some guy in his underwear sitting in his basement eating Cap'n Crunch while scratching the mole on his butt.

    Yes, I've seen those charts too Dochartaigh. You're free to call them whatever you want. There are no ISO standards on coils. Until then I just call them all microcoils as long as the specs are spelled out. If I'm wrong, I apologize to everyone in advance and I'll have a mod cane me till I'm bloody.

    Just kiddin' with yuh.
    Last edited by Bronze; 06-24-2014 at 06:46 PM.
    "The fate of unborn millions will now depend, under God, on the courage and conduct of this army...we have therefore to resolve to conquer or die." General Washington July 2, 1776

  5. #5
    Travelin' Man Verified Member
    ECF Veteran
    Supporting Member
    PapawBrett's Avatar
    Join Date
    Jul 2012
    Location
    Monroe NC
    Posts
    3,839

    Default

    Outstanding Job General !

    Personally, I use a 1/16th drill bit and carefully wrap my each coil beside the previous one. Because I use Mechanicals (REOS) I include a five second or so Ohms test before firing. As long as the Ohms readout does not waiver back and forth, I have a good, solid coil. Then, after test firing, I also gently squeeze my coils together with tweezers as shown in this pic-torial. By using this method, I can consistently produce 11- 12 wrap coils at about 2.0 ohms (for both of my VV Grand) and 8- 9 wrap coils for 1.5 ohms on my Woods and my Mech's.

    I am aware that Bronze is a ProVari Man. For those of us who use mechanical Mods- I Cannot Stress Enough (!) the importance of a good Ohms test PRIOR to test firing, and after your rebuild is completed. Twenty cents worth of Kanthal is a lot easier to part with than $150 worth of Mod. And dead shorts don't work well on Mechanicals.
    Last edited by PapawBrett; 06-24-2014 at 07:20 PM.
    VapinBill, Bronze, Chakris and 4 others like this.

    If You would Cry for Your Freedom, will You Stand for the Freedom of Another ?

  6. #6
    PV Master ECF Veteran DavidOH's Avatar
    Join Date
    Apr 2013
    Location
    Central OH
    Posts
    3,597

    Default

    Nicely done. Should be a help to someone trying to wrap that first coil.
    VapinBill, Bronze, Chakris and 1 others like this.
    British comedian Dave Allen--Thank you...Goodnight and May Your God Go With You.

    My Mother--There are no problems in life, just little hiccups.

  7. #7
    Full Member Verified Member
    Join Date
    Feb 2014
    Location
    PA, United States
    Posts
    126

    Default

    Quote Originally Posted by Bronze View Post
    Yes, I've seen those charts too Dochartaigh. You're free to call them whatever you want. There are no ISO standards on coils. Until then I just call them all microcoils as long as the specs are spelled out.

    I think of it this way: the majority of people use 28 gauge wire, right? And in Kayfun's for example, most people aim for around (roughly) 1.5 ohm. So you can't really go all that much bigger than 2mm and still build a 1.5 ohm/28-gauge coil and still fit it in the Kayfun...or the coil is going to be wider than the terminal posts, and/or too tall so the top cap (or bottom of the deck) hits it which will create a short.

    So purely by the physical constraints of the most popular RTA out there, using the most common wire, building it at the most common resistance, I would think right around 2mm would then be considered the "standard" size since it's just right to fit in there (takes a deep breath so therefore, that's why I wouldn't consider 2mm to be a microcoil.

    No offense to your nice tutorial - I'm just sayin'
    Last edited by Dochartaigh; 06-24-2014 at 07:19 PM.
    VapinBill, Bronze, Chakris and 1 others like this.
    Favs: Juice Mafia: Lemon Meringue Pie --- Pink Spot: Peanut Butter, Pink Spot, Gummy Bear --- Mt. Baker Vapor: Dutch Apple Pie, Morning Vape, Butterscotch, Cinnamon Roll, Orange Dream Bar, Sticky Bun --- Killer Juice: Boblo's Vanilla Custard

  8. #8
    Double Guru Verified Member
    ECF Veteran
    Bronze's Avatar
    Join Date
    Aug 2012
    Location
    Wake Forest, NC
    Posts
    22,591

    Default

    Quote Originally Posted by PapawBrett View Post
    Outstanding Job General !

    Personally, I use a 1/16th drill bit and carefully wrap my each coil beside the previous one. Because I use Mechanicals (REOS) I include a five second or so Ohms test before firing. As long as the Ohms readout does not waiver back and forth, I have a good, solid coil. Then, after test firing, I also gently squeeze my coils together with tweezers as shown in this pic-torial. By using this method, I can consistently produce 11- 12 wrap coils at about 2.0 ohms (for both of my VV Grand) and 8- 9 wrap coils for my Woods and my Mech's.

    I am aware that Bronze is a ProVari Man. For those of us who use mechanical Mods- I Cannot Stress Enough (!) the importance of a good Ohms test PRIOR to test firing, and after your rebuild is completed. Twenty cents worth of Kanthal is a lot easier to part with than $150 worth of Mod. And dead shorts don't work well on Mechanicals.
    Yeah, there are a zillion variants. This one here is really designed for a regulated mod as you point out. I have a mech too Pop that I use regularly. I'm not a subohmer (too warm for me).
    "The fate of unborn millions will now depend, under God, on the courage and conduct of this army...we have therefore to resolve to conquer or die." General Washington July 2, 1776

  9. #9
    Travelin' Man Verified Member
    ECF Veteran
    Supporting Member
    PapawBrett's Avatar
    Join Date
    Jul 2012
    Location
    Monroe NC
    Posts
    3,839

    Default

    Quote Originally Posted by Bronze View Post
    Yeah, there are a zillion variants. This one here is really designed for a regulated mod as you point out. I have a mech too Pop that I use regularly. I'm not a subohmer (too warm for me).
    I don't subohm, either as I prefer a cooler, smoother Vape. I only added that post as I didn't want some unsuspecting soul to try a rebuild without understanding the importance of an Ohms test. Still, an outstanding post Bronze.
    VapinBill, Chakris, tnt56 and 2 others like this.

    If You would Cry for Your Freedom, will You Stand for the Freedom of Another ?

  10. #10
    Double Guru Verified Member
    ECF Veteran
    Bronze's Avatar
    Join Date
    Aug 2012
    Location
    Wake Forest, NC
    Posts
    22,591

    Default

    Quote Originally Posted by Dochartaigh View Post
    I think of it this way: the majority of people use 28 gauge wire, right? And in Kayfun's for example, most people aim for around (roughly) 1.5 ohm. So you can't really go all that much bigger than 2mm and still build a 1.5 ohm/28-gauge coil and still fit it in the Kayfun...or the coil is going to be wider than the terminal posts, and/or too tall so the top cap (or bottom of the deck) hits it which will create a short.

    So purely by the physical constraints of the most popular RTA out there, using the most common wire, building it at the most common resistance, I would think right around 2mm would then be considered the "standard" size since it's just right to fit in there (takes a deep breath so therefore, that's why I wouldn't consider 2mm to be a microcoil.

    No offense to your nice tutorial - I'm just sayin'
    Other than the oddball 26ga and twisted wire coils, I find that 28 and 30ga is split about evenly. The subohmers favor the 28 and the regulateds favor the 30. Just a tendency.
    Chakris and DavidOH like this.
    "The fate of unborn millions will now depend, under God, on the courage and conduct of this army...we have therefore to resolve to conquer or die." General Washington July 2, 1776

Page 1 of 10 12345 ... LastLast

Bookmarks