Twist Drills

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Cordless drills: How we test cordless drills

Our hammer drill test involves drilling four different sized holes in concrete

We test how effective hammer drills are by drilling holes in concrete. We drill five holes with four hammer-drill bits, ranging in diameter between 6mm and 12mm. We aim to drill holes to a depth of 50mm. We record how far into the concrete they get and how quickly they get there.

Rotary drilling tests

Drilling in wood

We drill five holes with a 6mm drill bit to a depth of 40mm into beech. We record how quickly the drills reached the required depth.

Drilling in metal

Using a 6mm drill bit, we drill another five holes to a depth of 5mm in steel and we record how long it takes each drill to sink the holes.

Drilling in sandstone

Five holes are drilled using a 6mm drill bit in sandstone – we drill to a depth of 30mm and we record the time taken to drill the holes.

Screwdriving tests

Screwdriving in wood

We drive screws of various sizes (3x40mm, 6x80mm and 8x80mm) into pine and we record the time taken and the depths reached in the wood.

Screwdriving in metal

We drive four screws into steel to a depth of 5mm and we record how long it takes to drive the screws home, and how deep they get in the steel.

Battery life tests

Full charge test

We fully charge each drill’s battery and then see how many holes can be drilled in sandstone. We then use another fully charged battery and see how many screws can be driven into pine. The best drills we’ve tested can drill more than 100 holes and 150 screws. The worst we’ve seen can manage only around 40 holes and 40 screws.

Quick charge test

We charge each battery for 15 minutes and then repeat our full charge test. The best drills we’ve seen can drill around 50 holes after a 15-minute charge, the worst will struggle to drill more than one or two.

Losing charge test

We fully charge a drill battery and then leave it for a month. We then measure the amount of charge left in the drill. The best drills we’ve tested will retain more than 95% of their original charge. The worst will lose more than 60% of their original charge in four weeks.

Motor endurance

We test the durability of a drill’s motor by running it through more than 2000 cycles of drilling, resting and screwdriving. In all, this takes around 33 hours and is equivalent to about ten years of DIY use.

High Quslity Dewalt cordless drill batteries:
Dewalt DW9098 battery
,
Dewalt DW9096 battery
,
Dewalt DW9095 battery

Discover Twist Drills On eBay Below:

UTD 47 64 HS TWIST DRILL TAPER SHANK HS G8
UTD 47 64 HS TWIST DRILL TAPER SHANK HS G8
$33.98
CLEFORGE 13 16 2 FLUTE HS TWIST DRILL TAPER SHANK 433899
CLEFORGE 13 16 2 FLUTE HS TWIST DRILL TAPER SHANK 433899
$29.99
Precision Twist CO500 12 Cobalt Steel Extra Long Drill Bit Gold Oxide Finish 6
Precision Twist CO500 12 Cobalt Steel Extra Long Drill Bit Gold Oxide Finish 6
$34.43
1 19 32 HSS Cle Forge Cleveland Twist Drill 4MT Morse Taper Shank
1 19 32 HSS Cle Forge Cleveland Twist Drill 4MT Morse Taper Shank
$29.00
PTD 1 21 32 HS TWIST DRILL TAPER SHANK E5
PTD 1 21 32 HS TWIST DRILL TAPER SHANK E5
$54.95
UNION BUTTERFIELD 1 17 64 HS TWIST DRILL TAPER SHANK
UNION BUTTERFIELD 1 17 64 HS TWIST DRILL TAPER SHANK
$39.99
MORSE 2 5 8 HS TWIST DRILL TAPER SHANK
MORSE 2 5 8 HS TWIST DRILL TAPER SHANK
$59.99
PTD 1 7 32 HSS TAPER LENGTH TWIST DRILL  STRAIGHT SHANK
PTD 1 7 32 HSS TAPER LENGTH TWIST DRILL STRAIGHT SHANK
$22.99
Cleveland Twist 35 64 Coolant Thru Drill 3 pieces
Cleveland Twist 35 64 Coolant Thru Drill 3 pieces
$26.99
Cleveland Twist 35 64 Coolant Thru Drill QTY 3 Pieces
Cleveland Twist 35 64 Coolant Thru Drill QTY 3 Pieces
$26.99
6 new PTD 02570 F Screw Machine Length Precision Twist Dagger Cage Drills
6 new PTD 02570 F Screw Machine Length Precision Twist Dagger Cage Drills
$9.99
MORSE NS 1 11 32 2 FLUTE HS TWIST DRILL TAPER SHANK
MORSE NS 1 11 32 2 FLUTE HS TWIST DRILL TAPER SHANK
$23.98
7 new OSBORN 8mm Metric HSS Taper Shank 1 MTS Twist Drills ENGLAND 80 mm 8 MM
7 new OSBORN 8mm Metric HSS Taper Shank 1 MTS Twist Drills ENGLAND 80 mm 8 MM
$49.99
Twist Drill Straight Tooth Milling Cutter 3 8 Cutting Width 3 1 2 Dia 1 ID
Twist Drill Straight Tooth Milling Cutter 3 8 Cutting Width 3 1 2 Dia 1 ID
$6.50
Twin Ends Heavy Duty 30 High Speed Twist Drill Bits USA Norseman 28140
Twin Ends Heavy Duty 30 High Speed Twist Drill Bits USA Norseman 28140
$3.99
Twin Ends Heavy Duty 3 16 High Speed Twist Drill Bit USA Norseman 28530 QTY 12
Twin Ends Heavy Duty 3 16 High Speed Twist Drill Bit USA Norseman 28530 QTY 12
$23.99
Twin Ends Heavy Duty 30 High Speed Twist Drill Bit USA Norseman 28140 12 PACK
Twin Ends Heavy Duty 30 High Speed Twist Drill Bit USA Norseman 28140 12 PACK
$21.99
Lot of Machining Taps Machine Cutting Tools Morse Twist Drill Winter GTD Bit
Lot of Machining Taps Machine Cutting Tools Morse Twist Drill Winter GTD Bit
$19.99
Twin Ends Heavy Duty 1 4 High Speed Twist Drill Bit USA Norseman 28570 Qty 12
Twin Ends Heavy Duty 1 4 High Speed Twist Drill Bit USA Norseman 28570 Qty 12
$30.99
Vintage Cleveland Twist Drill 657 Size 5 HSS Taper Pin Reamer Made in USA
Vintage Cleveland Twist Drill 657 Size 5 HSS Taper Pin Reamer Made in USA
$9.99
406 FLAT BOTTOM ADAPTOR DRILL HSS 4 FLUTE NEW YORK TWIST H 3 1 5 9
406 FLAT BOTTOM ADAPTOR DRILL HSS 4 FLUTE NEW YORK TWIST H 3 1 5 9
$5.85
Twin Ends Heavy Duty 11 High Speed Twist Drill Bit USA Norseman 27950 12 PACK
Twin Ends Heavy Duty 11 High Speed Twist Drill Bit USA Norseman 27950 12 PACK
$23.99
Twin Ends Heavy Duty 1 8 High Speed Twist Drill Bit USA Norseman 28490 QTY 12
Twin Ends Heavy Duty 1 8 High Speed Twist Drill Bit USA Norseman 28490 QTY 12
$20.99
3125 FLAT BOTTOM ADAPTOR DRILL HSS 4 FLUTE NEW YORK TWIST H 3 1 5 10
3125 FLAT BOTTOM ADAPTOR DRILL HSS 4 FLUTE NEW YORK TWIST H 3 1 5 10
$5.85
Cleveland Twist Drill NO 684 HSS Double End Mill 1 2 Shank 1 2 New USA
Cleveland Twist Drill NO 684 HSS Double End Mill 1 2 Shank 1 2 New USA
$15.99
21 32 Taper Length Drill HSS Precision Twist Drill
21 32 Taper Length Drill HSS Precision Twist Drill
$7.95
31 64 Cobalt Aircraft Drill Precision Twist Drill
31 64 Cobalt Aircraft Drill Precision Twist Drill
$7.95
29 64 1MT Shank Drill Detroit Twist Drill Co 7 1 2 OAL
29 64 1MT Shank Drill Detroit Twist Drill Co 7 1 2 OAL
$9.99
9mm Drills Precision Twist  3pc lot Resharps
9mm Drills Precision Twist 3pc lot Resharps
$7.95
7mm Drill Precision Twist 9 Oal
7mm Drill Precision Twist 9 Oal
$7.95
564 Drill 14 Overall 4 1 2 Flute118 PointHSS Hayden Twist
564 Drill 14 Overall 4 1 2 Flute118 PointHSS Hayden Twist
$34.95
82mm Drill Precision Twist 65 Oal 10pc lot
82mm Drill Precision Twist 65 Oal 10pc lot
$39.95
51 64 Longboy Drill18Overall718 HS SS Hayden Twist
51 64 Longboy Drill18Overall718 HS SS Hayden Twist
$67.65
47 64 Longboy Drill18Overall718 HS SS Hayden Twist
47 64 Longboy Drill18Overall718 HS SS Hayden Twist
$57.12
9 16 2MT Extra Length Drill HSS 18 oal Precision Twist 28036
9 16 2MT Extra Length Drill HSS 18 oal Precision Twist 28036
$57.95
57 64 Longboy Drill18Overall718 HS SS Hayden Twist
57 64 Longboy Drill18Overall718 HS SS Hayden Twist
$71.20
Pocket Hole 10mm Twist Step Drill Bit + Stop Collar Set Kreg Guide Hss Drill Bit
Pocket Hole 10mm Twist Step Drill Bit + Stop Collar Set Kreg Guide Hss Drill Bit
$0.99
TWIST DRILL  MACHINE TAPER SHANK 15 16 9
TWIST DRILL MACHINE TAPER SHANK 15 16 9
$29.95
6 Precision Twist Drill 9 16 Short Series Tang Drive Bit
6 Precision Twist Drill 9 16 Short Series Tang Drive Bit
$5.56

Recently Purchased Twist Drills:


national twist drill amp; tool grinding fixture 110 113 flute grinder jig model a, 5 union twist drill co utd milling cutters gear hob machinist 31658, 78 precision twist core drill 2mt shank, precision twist drill 2132 dia drill bit 51042 hss r51 free shipping 1471, precision twist drill 34 taper length 51048 r51 hss free shipping 1472, precision twist drill taper length hss 51044 r51 1116 free shipping 1473, union twist drill 3416 nf hs h3b gh3 w 440 taper measuring 412 long, precision twist drill straight shank stock no 7449341 type sl4396 size 1375, precision twist drill co twist drill stock no 26150 size 1500mm type 5ats , hamp;g chasers 91624 left hand 100 series cleveland twist drill, hamp;g chasers 51632 100 series cleveland twist drill insert chasers, precision twist drill co 2 taper shank stock no 20050 size 2532, precision twist 12 pcs 532 high speed steel qty 12, precision twist 12 pcs 18 x 3 bits usa type ez10p, ingersoll td170013618r01 17 179mm goldtwist 8xd inserted indexable drill, 12 precision twist drill heavy duty screw machine length drill bits 2mm x 43mm, 6 nachi jorge twist drills straight shark standard doz 12 size u jobber length, hss 5 nachi jobbers length ansi b9411m size 2964 straight shark twist drills , union twist drill end mill 1 14 dia 4loc 6 12 oal hss 6 flute, wamp;b usa twist core drill 16364dia x 1534long with 5mt shank hs 3flute , hs twist core drill 178dia x 1612long 5mt shank 4flute poland, cle forge hs twist core drill 138dia x 14long 4mt hs 4flute usa, national core drill 12732dia x 1412long 3mt hs twist drill bit 3fl usa, cle forge hs twist core drill 138dia x 1412l 4mt hs 4flutes usamade tool, atm twist core drill 12732dia x 1412 4mt morse taper shank hs 3flute usa, twist type hs core drill 178 16l 4flute hs 5mt morse taper shank poland, core drill 134dia x 1714l hs 4flute 5mt twist type chicagolatrobe usa, hs twist core drill 2116dia x 1718long 5mt morse taper shank 4flute, cle forge usa 218x1612 hs twist drill wthrough coolant straight shank cnc, hs twist type core drill 2 4fl hs 5mt 1712l wamp;b usa, twist type hs core drill 212 4fl hs 5mt 1534l atm usa, new twist core drill 218 4flute 5mt morse taper shank chicagolatrobe 54536, new twist type core drill 134 hs 4flute 5mt taper shank chicagolatrobe usa, new twist type cl hs core drill 11316 4fl 5mt chicagolatrobe 54516, precision twist drill 375mm 135 point cobalt jobber drill quanity of 12, precision twist drill 12764 4mt 135 point cobalt taper shank drill bit, precision twist drill 3564 135 point spiral flute cobalt taper length dril, precision twist drill 3132 135 point spiral flute cobalt taper length dril, precision twist drill 2332 135 point right hand cut spiral flute screw ma, precision twist drill 6164 135 point spiral flute cobalt taper length dril, precision twist drill 2332 135 point spiral flute cobalt taper length dril, precision twist drill hss jobber drillsteam blackoxide1764 qty 12 , cleveland twist qty 3 1hs carbide tip 34 1hs general purpose taper shank , cleveland twist 1hs steel st fluted taper shank 1cleforce no 745 1 58 , precision twist m42co g screw machine drill hsco size m pack of 12, nos precision twist drill 916 hss extra length drill bit stk 14030a, vintage new york twist drill company high speed drill bits lot of 12 rare, vintage sheffield england sheffield high speed twist drill bits rare, lot 2 union twist high speed steel twist 3764 drill bit straight shank g8, cleveland td twist drill no 10 112 shell arbor morse taper, 114 hs high speed drill precision twist drill 1 inch shank usa , cleveland twist drill single end mill 34 diameter 34 shank , 3364 cobalt drill dormer precision twist bronze oxide coat, 100pcs 1mm5mm nitrided hss twist drill bit set for woodworking hole opener wt7n, 1732 cobalt drill dormer precision twist bronze oxide coat, 58 625 cobalt drill dormer precision twist bronze oxide coat, 916 5625 cobalt drill dormer precision twist bronze oxide coat, 1 new walter titex 7 mm carbide coolant thru twist drill a6489dpp7 mm, 34 hss twist drill with coolant through 9 34 length split point used , ingersoll td160012818r01 16 169mm goldtwist 8xd inserted indexable drill, precision twist drill r51 516 rh taper length drill qty 6 free shipping, 100pcs 1mm5mm nitrided hss twist drill bit set for woodworking hole opener, 932 drill bit fish tail new york twist drill, 1764 hss twist drill tapered 1 shank cleveland twist drill usa cleforge, 38 hss twist drill tapered 1 shank cleveland twist drill usa, 1964 hss twist drill tapered 1 shank cleforge usa, 516 hss twist drill tapered 1 shank precision twist drill usa ptd, 932 hss twist drill tapered 1 shank precision twist drill usa ptd