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Kanthal coil got skewed after dry firing

Discussion in 'Coil Builds' started by c4ppucino, Jan 21, 2018.

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  1. c4ppucino

    c4ppucino Full Member

    Jun 2, 2015
    Yeah, tried that, shoving a metal jig into the coil when pre-firing, but it sparked and/or 'too low resistance'. 'Duh' moment for me, I'm basically shorting a circuit. It only became possible to do that with a ceramic jig that's non conducting.

    Successfully done it with my current setup, 24 ga, 10 winds on 35 diameter. Without shoving a jig, pre-firing would just cause both the end wires (the ones connected to the poles) to glow bright, and then snapped off. With a ceramic jig in the middle, it pre-fired slow but nicely.

    Tried with dropping water a bit, but the water ended up boiling and shoots at my fingers (hot!). I was using an empty liquid bottle as the water container and dropper tho, so maybe the water drops from the nozzle were too big.
     
  2. Kiyle the Manlet

    Kiyle the Manlet Senior Member

    Feb 12, 2018
    Ohio
    Lots of replies, not going to read them all, so of it's already said, sorry for the repeat.

    Turn your wattage down. I have that issue with lighter wires and what works for me is making them just barely red and then crimping.

    Also, make sure you are grabbing directly from the middle.
     
    • Like Like x 1
  3. MacTechVpr

    MacTechVpr Vaping Master Verified Member ECF Veteran

    Supporting member
    Aug 24, 2013
    Hollywood (Beach), FL
    Encountering our first shorts rebuilding is a bit shocking at first, yeah. LOL Especially when they arc. But it definitely gets our attention. It should. You don't want to vape at those temp's.

    Nopes. Firing a well formed coil won't cause the end turns to glow. A loose or bad connection (the effect of more resistance) typically will as the leads represent less resistance than the rest of the wind. What I said is if there is greater strain in the leads…which can easily be added during the set…this strain (elongates) the wire lowering the resistance. Guess what happens? The leads will heat up and light up on ya.

    Using a ceramic rod as the means to create a wind is not very effective. When you fire wire it softens (annealing) expanding and possible re-shaping the wind if enough. That's why it's kinda holding it's shape as the rod seems to help when watts low. In fact, you've slightly changed diameter and spacing likely making it looser on the rod. But we don't vape generally at low watt's.

    To form something and train it into a shape you need heat and force, either bending or tension (strain) or a combination of both. The wind still needs to be hard enough to withstand repeated re-heating and that's where strain comes in imparting that additional hardness into the wire in the form of strain. Heating a wire on rod won't do that.

    Yeah, a bit too much. You just graze, barely touch, the wire with one of those needle-tip bottles and get a micro-drop.

    All I can say, is keep the rods. They're handy once you know how to create a stable wind. Getting there…I can't emphasize enough that you try to tension wind one. If you're not ready to jump for a pin vise get a common screwdriver with a known diameter. Say 1/4" shank for approx 3.2mm Ø. Tape the wire to the handle and rotate while pulling firmly until they turns get sticky. You will know very clearly when this happens. Chances are good to perfect having seen what they fire like after oxidation that you'll never look back at a bad vape.

    Best of luck c4. :)
     
    • Like Like x 1
  4. vapdivrr

    vapdivrr Vaping Master Verified Member ECF Veteran

    Jul 8, 2012
    sarasota,fl
    I haven't seen my hot wrap vid in a long time. I got a chuckle when I mentioned that the 28g wire was quite thick and can handle the heat....back then it was considered really thick wire. Now people are using such thick wires compared to 28g.

    Sent from my SCH-I545 using Tapatalk
     
    • Agree Agree x 2
  5. MacTechVpr

    MacTechVpr Vaping Master Verified Member ECF Veteran

    Supporting member
    Aug 24, 2013
    Hollywood (Beach), FL
    Well it was! And I tried my best vap, I truly did. :D

    Do you realize we're 5-year old, old timer's. Thanks for the memories.

    Good luck. :)
     
    • Like Like x 1
  6. vapdivrr

    vapdivrr Vaping Master Verified Member ECF Veteran

    Jul 8, 2012
    sarasota,fl
    And to you my friend

    Sent from my SCH-I545 using Tapatalk
     
    • Like Like x 1
  7. MacTechVpr

    MacTechVpr Vaping Master Verified Member ECF Veteran

    Supporting member
    Aug 24, 2013
    Hollywood (Beach), FL
    Well that was a great video. And much appreciated.

    These days I'm winding from 25AWG for sub 25W tanks up to the equiv mass of mebe 20AWG. Always low profile. Never at the apparent output temp of straight or multi-wire of that gauge. But frankly much, much…did I say much?…cooler as evident from the wire surface temps of the below.

    What can I say? \shrug

    CYA out there and good luck vap. :)

    p.s. Thank goodness I never started making tubes…I would've never had the time.
     
  8. vapdivrr

    vapdivrr Vaping Master Verified Member ECF Veteran

    Jul 8, 2012
    sarasota,fl
    love reading your posts, always to perfection and right on.....

    Sent from my SCH-I545 using Tapatalk
     
    • Like Like x 1
  9. MacTechVpr

    MacTechVpr Vaping Master Verified Member ECF Veteran

    Supporting member
    Aug 24, 2013
    Hollywood (Beach), FL
    There are three kinds of men: the one that learns by reading, the few who learn by observation, and the rest who have to pee on the electric fence for themselves. —Will Rogers

    Well, we need to help preserve the English language…some of us just don't get it until we see it in print. And I've already done too much of the latter. :D

    TY vap, it's been fun.

    Good luck. :)
     
  10. MacTechVpr

    MacTechVpr Vaping Master Verified Member ECF Veteran

    Supporting member
    Aug 24, 2013
    Hollywood (Beach), FL
    So C4, how's it shakin'. Hope you got the vape on.

    Good luck. :)
     
  11. c4ppucino

    c4ppucino Full Member

    Jun 2, 2015
    Hi, sorry for late reply.

    Yeah I managed to build stable coils for my Tsunami now, with the help of the ceramic rod. Another 'duh moment' for me: never cool down the ceramic rod by dunking it into water. It cooled super fast, but after doing it 3-4 times, the rod snapped middle way, when I was pulling it to tighten an installed coil, one day. Seemed like rapid heating and cooling made the rod brittle. Luckily the snapped part was not too long, so it still got enough length left to work with.

    Now I'm looking for a better (or at least the same flavor level) replacement for my Tsunami 24, but that's a different topic :)
     
  12. MacTechVpr

    MacTechVpr Vaping Master Verified Member ECF Veteran

    Supporting member
    Aug 24, 2013
    Hollywood (Beach), FL
    Thx for the comeback C4. Alls I can say, is I'm happy in 30-seconds winding with strain and a drill bit…

    [​IMG]

    Pin vise strain winding forms the coil by adding rigidity internally. Add undue stress to the leads or wind itself in installation and if enough to mangle it during pulsing it will skew it in installation. A tremendous visual cue and tool to improve the method used for a particular or any atomizer. This is apart from the significant performance advantage that can be gained from oxidizing a tensions contact (closed) coil.

    Hope you give it a chance and glad to help if anything gets sideways on ya. :D

    Good luck. :)

    p.s. I love the Tsunami deck.
     
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