Using drill bits to wrap coils

How do you wrap the perfect coil? The best secret behind this is to wrap it around a drill bit so you can get maximum leverage and create the coils as close together as possible.

Some go for micro coils, some go for a nano coils. You can do either with a variety of drill bit sizes. You probably can’t go wrong with a 1/16 drill bit for starters and experiment from there.

IMAG2972 1 zpsa7193c1d Using drill bits to wrap coils

For my go-to setup I use a 1/16 drill bit with 28ga. Kanthal 9 or 10 wrap touching coil. Meters out at around 1.2-1.3ohms which gives me the vape I like.

For an awesome list of various size bits, setups, and combinations see the coil chart / list below!

List #1

wire ohms wraps size (inches) size (mm) wire desc dia desc wraps desc ohms desc
24 0.30 8 x 2 0.09400 2.38760 Wire – 24ga Kanthal A-1 (0.17? per in.) I.D. – 3/32″ mandrel (2.38mm / .094″) 7/8 wrap (compressed coils) Resistance – 0.6? (this is the resistance for one coil)
26 0.50 8 0.06250 1.58750 26g Nichrome 1/16″ drill bit # wraps: 8 resistance: 0.5?
26 0.50 8 0.06250 1.58750 26 AWG Nichrome 60 1/16 drill bit 8/7 wraps 0.5 ?
26 0.60 8 0.06500 1.65100 26g kanthal 16g blunt tip needle wraps/ 8 ?/ .6ish
26 0.70 8 0.05500 1.39700 Kanthal A1 26 awg .055″ music wire 8 coils .7?
26 0.70 10 0.06250 1.58750 26g A1 Kanth 1/16th drill bit 9/10 wrap microcoil 0.7 ohms
26 0.70 11 0.06250 1.58750 26ga nichrome 80 1/16th mandrel 10/11 wrap .7 ohms sidesaddle on a Divo
26 0.75 11 0.06250 1.58750 26g Kanthal A-1 1/16 drill bit Number of Coils: 11 Measured Ohms of coil: ~.75ohm
26 0.80 12 0.06250 1.58750 26G Nicrhome 1/16″ bit 12 wraps .8?
26 0.90 7 0.06500 1.65100 26 AWG Nichrome 60 16 gauge blunt needle 7/6 wraps touching 0.9?
26 0.90 8 0.08300 2.10820 26 ga. Kanthal A-1 14 ga. needle 8 wraps .9 Ohms
26 0.90 12 0.06250 1.58750 26 gauge Nichrome 1/16″ Drill Bit # wraps: 12 resistance: 0.9 ohms
27 0.70 7 0.06250 1.58750 27 gauge René 41 .06″ / 1.51mm / #53 num. wraps: 7 resistance: 0.7?
27 0.90 9 0.06250 1.58750 Rene 41 Twisted 1/16th mandrel 9wrap .9 on Divo
27 1.30 14 0.05800 1.47320 27ga Kanthal A1 17ga blunt tip luer lock needle # wraps: 14 resistance: 1.26 ohms
28 0.76 5 0.05900 1.49860 28swg kanthal A1 1.5mm Number of Coils: 5 + long tails Ohms: 0.76
28 0.86 10 x 2 0.06250 1.58750 28 gauge kanthal 1/16 drill bit Number of coils: 10 Measured ohms of coil: 0.86
28 0.90 5 0.06250 1.58750 28 AWG Kanthal A1 1/16 drill bit 5/4 wraps 0.9?
28 0.90 6 0.07870 1.99898 28g Kanthal A-1 2mm diameter screwdrive Number of Coils: 6 Measured Ohms of coil: .9 ohm
28 1.00 6 0.09380 2.38252 28g 3/32 bit 6 wraps 1.0 ohm
28 1.00 8 0.06250 1.58750 28g Kanthal 1/16″ WRAPS: 7/8 x 2 RES: 0.5?. . . (1?/ea)
28 1.00 8 0.06250 1.58750 28 ga 1/16″ drill bit 8 wraps 1.0 ohm
28 1.00 8 0.06500 1.65100 28g Kanthal A-1 16 gauge needle Number of Coils: 7/8 Measured Ohms of coil: ~1.0ohm
28 1.00 8 0.07810 1.98374 28AWG Kanthol 5/64″ machined cylinder 7.5 wraps 1?
28 1.10 11 ??? 28 ga Nichrome 80 paperclip 10/11 coils 1.1 ohms
28 1.10 12 x 2 0.07812 2.00000 28 Gauge (dual) 2mm Bit wraps – 12 Wraps Each Combined OHMS – 1.1
28 1.20 9 0.07870 1.99898 28g Kanthal A-1 2mm diameter screwdriver Number of Coils: 9 Measured Ohms of coil: 1.2 ohm
28 1.20 10 0.06250 1.58750 Kanthal A1 28 awg .0625″ (1/16″) music wire 10 coils 1.2?
28 1.30 9 0.09380 2.38252 28g Kanthal A-1 3/32 dremel drill bit (2.38mm) Number of Coils: 9/8 Measured Ohms of coil: 1.3ohm (in an AGA-T2)
28 1.30 12 0.08000 2.03200 28g Kanthal A-1 2mm (I think) diameter screwdriver Number of Coils: 12 Measured Ohms of coil: 1.3 ohm
28 1.40 9 0.06250 1.58750 28g Kanthal 1/16 drill bit Number of Coils:9 Measured Ohms of coil: 1.4
28 1.40 9 0.09380 2.38252 Kanthal A-1 28 awg 2 mm screwdriver Number of Coils: 9 Measured Ohms of coil: 1.4
28 1.40 10 ??? 28g Kanthal toothpick Number of Coils:10 Measured Ohms of coil: 1.4
28 1.50 10 0.06250 1.58750 Kanthal A1 28 awg 1/16 drill bit 10 wraps 1.2? on rm2
28 1.50 11 0.06250 1.58750 28g kanthal 1/16″ drill bit Number of Coils: 11 Measured Ohms of coil: 1.5 ohm
28 1.60 10 0.06250 1.58750 Kanthal A-1 28 awg 1/16 in drill bit Number of Coils: 10 Measured Ohms of coil: 1.6
28 2.10 12 0.06250 1.58750 28g Kanthal A1 1/16″ drill bit # wraps: 12 resistance: 2.1?
29 1.20 8 0.05890 1.49606 29g Kanthal 1.5mm (.0589″) WRAPS: 7/8 x 2 RES: 0.6?. . . . (1.2?/ea)
29 1.30 8 0.05890 1.49606 29 ga Kanthal 1.5mm steel dowel 8 wraps 1.3 ohms
30 0.49 5×2 0.12500 3.17500 30 gauge Kanthal A1 – round Wrapped on a 1/8″ Phillips precision screwdriver 5 wraps, Two strands tightly twisted ~.485?
30 1.00 4 ??? 30ga kanthal Doubled-over 3mm silica Number of Coils: 4 Measured Ohms of coil: 1ohm
30 1.02 4 0.06250 1.58750 30 gauge kanthal 1/16″ drill bit 4 wraps 1.02 ohms
30 1.20 6 0.06500 1.65100 30 ga Kanthal wire 16 blunt tip needle 6 wraps 1.2 Ohms
30 1.30 9 0.07810 1.98374 Twisted 30ga kanthal 5/64 drill bit 9/8 wrap 1.3 ohms
30 1.30 16 0.04700 1.19380 Kanthal A1 30 awg .047″ music wire 16 coils 2.6? ea, total 1.3?
30 1.51 9 0.06250 1.58750 30 ga 1/16″ 8-9 loops 1.51 ohms
30 1.60 7 0.07810 1.98374 30 ga kanthal 1.96 mm “screw driver” Wraps 7 1.6 ohm
30 1.60 8 0.08300 2.10820 30 ga Kanthal wire 14 ga blunt tip 7/8 wraps around 1.5- 1.7
30 1.60 9 0.06250 1.58750 30g Kanthol 1/16 drill bit Number of Coils:9 Measured Ohms of coil:1.6
30 1.71 10 0.06250 1.58750 30 ga 1/16″ 9-10 loops 1.71 ohms
30 1.78 11 0.06250 1.58750 30 ga Kanthal ~1/16 screwdriver 11 wraps pulled really tight while wrapping 1.78 ohms
30 1.80 10 0.06500 1.65100 30g Kanthal equivalent to a 16g needle Number of Coils: 10 Measured Ohms of coil: 1.8
30 1.82 11 0.06250 1.58750 Kanthal A1 30 ga ~1/16 jeweler’s screwdriver 11 wraps 1.82 ohms
30 1.90 10 0.05800 1.47320 Kanthal 30g 17g needle Number of Coils: 10 Measured Ohms of coil: 1.9
30 2.20 12 0.06250 1.58750 Kanthal A1 30 awg .0625″ (1/16″) music wire 12 coils 2.2?
30 2.30 12 0.06500 1.65100 30ga Kanthal A1 16ga blunt tip luer lock needle # wraps: 12 resistance: 2.3?
30 2.50 14 0.06250 1.58750 30 AWG Kanthal A1 1/16 drill bit 13/14 wraps 2.5?
30 2.50 14 0.06250 1.58750 30 AWG Kanthal A1 1/16 drill bit 13/14 wraps 2.5?
32 1.10 8 0.04690 1.19126 Kanthal A1 32 awg twisted 2 stands 1mm Ekowool with .039″ (1mm) music wire core 8 coils 1.1?
32 1.40 6 ??? 32 gauge twisted round wooden toothpick Number of Coils: 6 Measured Ohms of coil: 1.4
32 1.50 10 0.08300 2.10820 32 ga. Kanthal A-1 (TRIPLE Twisted!) 14GA needle 10 Wraps ~1.5 ohm
32 1.60 7 0.08300 2.10820 32 ga. Kanthal A-1 (PAIR Twisted!) 14GA needle 7 Wraps 1.6 ohm
32 2.20 5 0.06250 1.58750 32 gage kantha 1/16 in leg of a heavy duty paperclip 5 wraps 2.2 ohms
32 2.37 9 0.03130 0.79502 kanthal a-1 32g safety pin of 1/32″ 9 wraps 2.37 Ohms
32 2.40 10 0.06250 1.58750 32g kanthal 1/16″ drill bit Number of Coils: 10 Measured Ohms of coil: 2.4 ohm
32 3.00 17 0.06500 1.65100 32g Kanthal A-1 16 gauge needle Number of Coils: 17 Measured Ohms of coil: ~3.0ohm
32 3.80 15 ??? 32g Kanthal my trusty paperclip leg Number of Coils: 14 or 15? Measured Ohms of coil: 3.8
.06 x .7 0.50 4 0.05500 1.39700 Mundys Magic .06 x .7 ribbon .055″ ID Number of Coils: 4 Measured Ohms of coil: 0.5ohm

List #2

wire ohms wraps size (inches) size (mm) wire desc dia desc wraps desc ohms desc
24 0.30 8 x 2 0.09400 2.38760 Wire – 24ga Kanthal A-1 (0.17? per in.) I.D. – 3/32″ mandrel (2.38mm / .094″) 7/8 wrap (compressed coils) Resistance – 0.6? (this is the resistance for one coil)
26 0.50 8 0.06250 1.58750 26g Nichrome 1/16″ drill bit # wraps: 8 resistance: 0.5?
26 0.50 8 0.06250 1.58750 26 AWG Nichrome 60 1/16 drill bit 8/7 wraps 0.5 ?
26 0.60 8 0.06500 1.65100 26g kanthal 16g blunt tip needle wraps/ 8 ?/ .6ish
26 0.70 8 0.05500 1.39700 Kanthal A1 26 awg .055″ music wire 8 coils .7?
26 0.70 10 0.06250 1.58750 26g A1 Kanth 1/16th drill bit 9/10 wrap microcoil 0.7 ohms
26 0.70 11 0.06250 1.58750 26ga nichrome 80 1/16th mandrel 10/11 wrap .7 ohms sidesaddle on a Divo
26 0.75 11 0.06250 1.58750 26g Kanthal A-1 1/16 drill bit Number of Coils: 11 Measured Ohms of coil: ~.75ohm
26 0.80 12 0.06250 1.58750 26G Nicrhome 1/16″ bit 12 wraps .8?
26 0.90 7 0.06500 1.65100 26 AWG Nichrome 60 16 gauge blunt needle 7/6 wraps touching 0.9?
26 0.90 8 0.08300 2.10820 26 ga. Kanthal A-1 14 ga. needle 8 wraps .9 Ohms
26 0.90 12 0.06250 1.58750 26 gauge Nichrome 1/16″ Drill Bit # wraps: 12 resistance: 0.9 ohms
27 0.70 7 0.06250 1.58750 27 gauge René 41 .06″ / 1.51mm / #53 num. wraps: 7 resistance: 0.7?
27 0.90 9 0.06250 1.58750 Rene 41 Twisted 1/16th mandrel 9wrap .9 on Divo
27 1.30 14 0.05800 1.47320 27ga Kanthal A1 17ga blunt tip luer lock needle # wraps: 14 resistance: 1.26 ohms
28 0.76 5 0.05900 1.49860 28swg kanthal A1 1.5mm Number of Coils: 5 + long tails Ohms: 0.76
28 0.86 10 x 2 0.06250 1.58750 28 gauge kanthal 1/16 drill bit Number of coils: 10 Measured ohms of coil: 0.86
28 0.90 5 0.06250 1.58750 28 AWG Kanthal A1 1/16 drill bit 5/4 wraps 0.9?
28 0.90 6 0.07870 1.99898 28g Kanthal A-1 2mm diameter screwdrive Number of Coils: 6 Measured Ohms of coil: .9 ohm
28 1.00 6 0.09380 2.38252 28g 3/32 bit 6 wraps 1.0 ohm
28 1.00 8 0.06250 1.58750 28g Kanthal 1/16″ WRAPS: 7/8 x 2 RES: 0.5?. . . (1?/ea)
28 1.00 8 0.06250 1.58750 28 ga 1/16″ drill bit 8 wraps 1.0 ohm
28 1.00 8 0.06500 1.65100 28g Kanthal A-1 16 gauge needle Number of Coils: 7/8 Measured Ohms of coil: ~1.0ohm
28 1.00 8 0.07810 1.98374 28AWG Kanthol 5/64″ machined cylinder 7.5 wraps 1?
28 1.10 11 ??? 28 ga Nichrome 80 paperclip 10/11 coils 1.1 ohms
28 1.10 12 x 2 0.07812 2.00000 28 Gauge (dual) 2mm Bit wraps – 12 Wraps Each Combined OHMS – 1.1
28 1.20 9 0.07870 1.99898 28g Kanthal A-1 2mm diameter screwdriver Number of Coils: 9 Measured Ohms of coil: 1.2 ohm
28 1.20 10 0.06250 1.58750 Kanthal A1 28 awg .0625″ (1/16″) music wire 10 coils 1.2?
28 1.30 9 0.09380 2.38252 28g Kanthal A-1 3/32 dremel drill bit (2.38mm) Number of Coils: 9/8 Measured Ohms of coil: 1.3ohm (in an AGA-T2)
28 1.30 12 0.08000 2.03200 28g Kanthal A-1 2mm (I think) diameter screwdriver Number of Coils: 12 Measured Ohms of coil: 1.3 ohm
28 1.40 9 0.06250 1.58750 28g Kanthal 1/16 drill bit Number of Coils:9 Measured Ohms of coil: 1.4
28 1.40 9 0.09380 2.38252 Kanthal A-1 28 awg 2 mm screwdriver Number of Coils: 9 Measured Ohms of coil: 1.4
28 1.40 10 ??? 28g Kanthal toothpick Number of Coils:10 Measured Ohms of coil: 1.4
28 1.50 10 0.06250 1.58750 Kanthal A1 28 awg 1/16 drill bit 10 wraps 1.2? on rm2
28 1.50 11 0.06250 1.58750 28g kanthal 1/16″ drill bit Number of Coils: 11 Measured Ohms of coil: 1.5 ohm
28 1.60 10 0.06250 1.58750 Kanthal A-1 28 awg 1/16 in drill bit Number of Coils: 10 Measured Ohms of coil: 1.6
28 2.10 12 0.06250 1.58750 28g Kanthal A1 1/16″ drill bit # wraps: 12 resistance: 2.1?
29 1.20 8 0.05890 1.49606 29g Kanthal 1.5mm (.0589″) WRAPS: 7/8 x 2 RES: 0.6?. . . . (1.2?/ea)
29 1.30 8 0.05890 1.49606 29 ga Kanthal 1.5mm steel dowel 8 wraps 1.3 ohms
30 0.49 5×2 0.12500 3.17500 30 gauge Kanthal A1 – round Wrapped on a 1/8″ Phillips precision screwdriver 5 wraps, Two strands tightly twisted ~.485?
30 1.00 4 ??? 30ga kanthal Doubled-over 3mm silica Number of Coils: 4 Measured Ohms of coil: 1ohm
30 1.02 4 0.06250 1.58750 30 gauge kanthal 1/16″ drill bit 4 wraps 1.02 ohms
30 1.20 6 0.06500 1.65100 30 ga Kanthal wire 16 blunt tip needle 6 wraps 1.2 Ohms
30 1.30 9 0.07810 1.98374 Twisted 30ga kanthal 5/64 drill bit 9/8 wrap 1.3 ohms
30 1.30 16 0.04700 1.19380 Kanthal A1 30 awg .047″ music wire 16 coils 2.6? ea, total 1.3?
30 1.51 9 0.06250 1.58750 30 ga 1/16″ 8-9 loops 1.51 ohms
30 1.60 7 0.07810 1.98374 30 ga kanthal 1.96 mm “screw driver” Wraps 7 1.6 ohm
30 1.60 8 0.08300 2.10820 30 ga Kanthal wire 14 ga blunt tip 7/8 wraps around 1.5- 1.7
30 1.60 9 0.06250 1.58750 30g Kanthol 1/16 drill bit Number of Coils:9 Measured Ohms of coil:1.6
30 1.71 10 0.06250 1.58750 30 ga 1/16″ 9-10 loops 1.71 ohms
30 1.78 11 0.06250 1.58750 30 ga Kanthal ~1/16 screwdriver 11 wraps pulled really tight while wrapping 1.78 ohms
30 1.80 10 0.06500 1.65100 30g Kanthal equivalent to a 16g needle Number of Coils: 10 Measured Ohms of coil: 1.8
30 1.82 11 0.06250 1.58750 Kanthal A1 30 ga ~1/16 jeweler’s screwdriver 11 wraps 1.82 ohms
30 1.90 10 0.05800 1.47320 Kanthal 30g 17g needle Number of Coils: 10 Measured Ohms of coil: 1.9
30 2.20 12 0.06250 1.58750 Kanthal A1 30 awg .0625″ (1/16″) music wire 12 coils 2.2?
30 2.30 12 0.06500 1.65100 30ga Kanthal A1 16ga blunt tip luer lock needle # wraps: 12 resistance: 2.3?
30 2.50 14 0.06250 1.58750 30 AWG Kanthal A1 1/16 drill bit 13/14 wraps 2.5?
30 2.50 14 0.06250 1.58750 30 AWG Kanthal A1 1/16 drill bit 13/14 wraps 2.5?
32 1.10 8 0.04690 1.19126 Kanthal A1 32 awg twisted 2 stands 1mm Ekowool with .039″ (1mm) music wire core 8 coils 1.1?
32 1.40 6 ??? 32 gauge twisted round wooden toothpick Number of Coils: 6 Measured Ohms of coil: 1.4
32 1.50 10 0.08300 2.10820 32 ga. Kanthal A-1 (TRIPLE Twisted!) 14GA needle 10 Wraps ~1.5 ohm
32 1.60 7 0.08300 2.10820 32 ga. Kanthal A-1 (PAIR Twisted!) 14GA needle 7 Wraps 1.6 ohm
32 2.20 5 0.06250 1.58750 32 gage kantha 1/16 in leg of a heavy duty paperclip 5 wraps 2.2 ohms
32 2.37 9 0.03130 0.79502 kanthal a-1 32g safety pin of 1/32″ 9 wraps 2.37 Ohms
32 2.40 10 0.06250 1.58750 32g kanthal 1/16″ drill bit Number of Coils: 10 Measured Ohms of coil: 2.4 ohm
32 3.00 17 0.06500 1.65100 32g Kanthal A-1 16 gauge needle Number of Coils: 17 Measured Ohms of coil: ~3.0ohm
32 3.80 15 ??? 32g Kanthal my trusty paperclip leg Number of Coils: 14 or 15? Measured Ohms of coil: 3.8
.06 x .7 0.50 4 0.05500 1.39700 Mundys Magic .06 x .7 ribbon .055″ ID Number of Coils: 4 Measured Ohms of coil: 0.5ohm