right sized drill bit, etc. for Kanger heads

[bover907]

I've built a couple of 5/64" micro coils for my EVOD heads. They work great, but my problem is the 5/64" drill bit doesn't fit down into the notch of the kanger head. What I did was wrap my coil on a 5/64" bit, then use a 1/16" bit to place the coil in the head and secure the leads and such. The problems I ran into on a couple was either coil deformation, or a crooked coil using the smaller diameter bit. and I had to do some finagling to straighten out the coil, which seemed to loosen and deform it some.

I'm wondering what sized bit, needle, or wire, etc fits exactly into the notch. This way I could keep my coil tight, and in the right place during re-assembly.

 

[coalyard]

1/16" bit or I use a 16ga needle. Perfect size, and great performance.

 

[Garemlin]

I've built a couple of 5/64" micro coils for my EVOD heads. They work great, but my problem is the 5/64" drill bit doesn't fit down into the notch of the kanger head. What I did was wrap my coil on a 5/64" bit, then use a 1/16" bit to place the coil in the head and secure the leads and such. The problems I ran into on a couple was either coil deformation, or a crooked coil using the smaller diameter bit. and I had to do some finagling to straighten out the coil, which seemed to loosen and deform it some.

I'm wondering what sized bit, needle, or wire, etc fits exactly into the notch. This way I could keep my coil tight, and in the right place during re-assembly.

I'm gonna try making some coils soon. But I am gonna do micro coils and torch them to hold them in place. From reading the Steam Engine calculator I am gonna prolly use 32ga with 10/9 wraps on a 1/16" bit to achieve a 2.2Ω coil. I hope it will fit.

 

[Rickb119]

The newer coils have straight slots as opposed to V slots on the older coils. The straight slots are slightly narrower and may not allow the bit to fit (the 16g needle still fits though). A flat needle file works great to increase the gap.