Hand Drill Bit
Saturday, April 2nd, 2011 |
 New 13pc Left Hand Drill Bit Set Screws Extractor Bits  US $999.99
|
 13PCS TITANIUM LEFT HAND DRILL BIT SCREW EXTRACTORS NEW US $999.99
|
 13 PCS TITANIUM LEFT HAND BOLT EXTRACTOR DRILL BIT NEW US $999.99
|
 Footprint 60111 Ratchet Brace Bit Auger Hand Drill US $99.99
|
 1 2 Left Hand Drill Bit 6 pack US $94.99
|
 ANTIQUE PRIMITIVE HAND CRANK DRILL WOOD BIT SET US $85.00
|
| Powered by phpBay Pro |
Can anyone suggest any reason for left hand (anticlockwise) drill bits, other than screw extraction?
I can only think of drilling into something threaded to avoid loosening in the process, or possibly some multi-spindle production machine where some revolve each way to simplify gearing (don't know if they ever existed).
If part of a single machine, multi-stage production requires the component to be turned anti-clockwise, any drilling operations are carried out with left handed drills to avoid having to stop and reverse the component's motion for this stage.
|
|
New 13pc Left Hand Drill Bit Set Screws Extractor Bits US $999.99
|
13PCS TITANIUM LEFT HAND DRILL BIT SCREW EXTRACTORS NEW US $999.99
|
13 PCS TITANIUM LEFT HAND BOLT EXTRACTOR DRILL BIT NEW US $999.99
|
 2 SPD HAND HELD CORE DRILL 7DIAMOND CORE BIT H20 TANK US $935.00
|
 2 SPD HAND HELD CORE DRILL 3DIAMOND CORE BIT H20 TANK US $875.00
|
 2 SPD HAND HELD CORE DRILL 4DIAMOND CORE BIT H20 TANK US $795.00
|
 2 SPEED HAND HELD CORE DRILL WITH DIAMOND CORE BIT 2 pack US $600.00
|
 2 SPEED HAND HELD CORE DRILL WITH DIAMOND CORE BIT US $524.00
|
 PRO 1 SPEED HAND HELD CORE DRILL W DIAMOND CORE BIT US $495.00
|
|
1 2 Left Hand Drill Bit 6 pack US $94.99
|
 Medicon Surgical Hand Drill Bits 576003 US $90.00
|
 CTD 87650 Premium Left Hand Spiral Drill Bit Set 1 16 1 2 by 16ths Set 8 PC US $89.95
|
|
ANTIQUE PRIMITIVE HAND CRANK DRILL WOOD BIT SET US $85.00
|
 7 16 Left Hand Drill Bit 6 pack US $81.99
|
 Hand Wood Drill Bits Peg Hole Drills Farm Barn Building Tools US $75.00
|
 ZIMMER BONE HAND DRILL W BIT ORTHOPEDIC US $75.00
|
 NEW 29 Pc Left Hand Drill Bits Left Hand Screw Extractor Left Hand Bit USA US $67.00
|
 VINTAGE CORNER ANGLE BIT BRACE HAND CRANK DRILL US $65.00
|
 3 8 Left Hand Drill Bit 6 pack US $55.99
|
 Vintage Stanley No743 Breast Bit Brace Drill Hand Crank Made in USA US $55.00
|
 ANTIQUE BRACE AND BIT HAND DRILL CARPENTER TOOL BORING US $55.00
|
 29PC LEFT HAND DRILL BIT BOLTS SCREWS EXTRACTORS CASE US $54.99
|
 Vintage 1 4 Inch Chuck Red Handles Egg Beater Hand Drill 1 Bit US $54.95
|
 29PC LEFT HAND DRILL BIT BOLTS SCREWS EXTRACTORS PRO US $54.95
|
 SPOFFORDS PATENT FRAY PIGG 10 1860s bit brace hand drill US $49.99
|
 Lot of GREENLEE Brace Auger Drill Bits Hand Drill US $49.99
|
 Vintage Trust Worthy Hand Drill Bit Holder Handle TH US $49.95
|
 Malco UB3 1 4 3 4 Step Drill Bits HVAC AC Hand Tools US $48.95
|
 Hanson Screw Extractor and Left Hand Cobalt Drill Bit S US $47.38
|
 5 16 Left Hand Drill Bit 6 pack US $45.99
|
 Lot of 9 Rare Vintage Drill Bits 3 AUGER ADJUSTABLE AUGER 2 HAND 1 BORE US $44.95
|
| Powered by phpBay Pro |