Using drill bits to wrap coils

4th graphic long 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