Re: [BlindHandyMan] Drills
Drill doctor is very good and you need not have sight to use it. John http://WhiteCane.org http://BlindWoodWorker.com http://HolyTeaClub.comcom\whitecane http://anellos.ws - Original Message - From: Dave Andrus To: blindhandyman@yahoogroups.com Sent: Wednesday, February 03, 2010 2:57 PM Subject: RE: [BlindHandyMan] Drills Hi, I am a relatively new member to the list and so appreciate your posting concerning drill bits. It does raise the question though of drill bit sharpeners. I had a friend show me how to sharpen bits on a grinder. I do a pretty good job with this when the bits is over 1/4, though not always perfect as I don't get the angel quite right. Are there any drill bit sharpeners out there that you would suggest? Dave Working together, sharing the light of salvation seen through the cross of Jesus Rev. Dave Andrus, Director Lutheran Blind Mission 888 215 2455 HTTP://WWW.BLINDMISSION.ORG -Original Message- From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of Ray Boyce Sent: Tuesday, February 02, 2010 10:48 PM To: blindhandyman@yahoogroups.com Subject: [BlindHandyMan] Drills Hi All We were discussing drills and drill sharpeners on VIP Conduit this afternoon in the Blind Handy Man Room and I said I would post an article on drills. I am sure I have posted this before but for the new members and for Geoff who I have a very high regard for here it is again. If you work long enough, you'll discover you really can't have too many drill bits. They're needed for numerous around-the-home, shop and contractor chores. Bits are available for drilling just about any material, including wood, the various metals, concrete, stone, tile and even glass. As you can guess, a wide variety of bits or tools for drilling are available for use with portable drills and drill presses. These include standard twist drill bits, auger bits, spade bits, Forstner bits, expansion bits, step-drill bits, hole saws, pilot-hole and screw bits, and plug cutters. Twist drill bits are the most common, and are available in a variety of sizes, materials and shapes. Show is a typical bit configuration. Twist Drill Bits Twist drill bits are some of the most common shop tools. They're available in a wide range of sizes, point and twist shapes, and these days they're not only available in standard industrial-grade steel, but also in exotic materials including titanium coated, black oxide and cobalt. Don't buy cheap bits. They're frustrating and can be dangerous, causing you to push or exert force when drilling. Drill bits are the most common tool accessory, a $740 million North American market. Drill bits are available in a wide variety of types, sizes and materials for specific metal- and wood-boring chores. Drill bit sizes come in four categories: fractional sizes, wire-gauge sizes, letter sizes and metric. Fractional sizes begin at 1/64 inch and run to more than 4 inches. The smaller bits increase in size by 64'ths, the mid-size bits by 32'nds and the larger bits by 16'ths. Wire-gauge numbers run from No. 1 through 80 (the smallest). All sizes are less than 1/4 inch and begin at 0.0135 inch (No. 80) up to 0.2280 inch (No. 1). The numbers correspond to standard wire sizes. These bits are used where exact hole dimensions are required, such as when tapping threads in holes. Letter size bits begin the next size up from No. 1 wire gauge. They begin at 0.2340 inch (A) and run to 0.4062 inch (Z). The largest size is smaller than 7/16 inch. These too are used to make precise hole sizes. And, of course, there are metric sizes in millimeters. One millimeter is equal to 0.0394 inch. Twist bits are commonly sold in a standard length, called jobber lengths, with the length varying according to the bit diameter. These will handle most of the jobs you'll tackle, but at times a longer length may be needed. In this case, extensions are available for 1/4-inch bit shanks. With many hex-heads available these days, an extension will fit most bit sizes, but they are designed primarily for woodworking, not metal chores. The next step in twist drill school is the point angle. Typically, 118 degrees is the most common angle. But these drills require a starting dimple in metal with a center punch, otherwise the bit will walk or skate away from the hole location. Bits with a 135 degree point will start their own hole in metal and, of course, can be used on many other materials. Brad-point bits provide even more precise starting in both metal and wood. Woodcraft Supply carries extra-long, 10-inch brad-point bits, handy for many furniture construction chores. The helix and flute angles are also important, and again these days there's more variety to choose from, depending on the job. The new Bosch Speed Helix design has
Re: [BlindHandyMan] Drills
yes the drill doctor. i have the basic model and it does wonders. the instructions are easy to follow and it is easy to use. the basic model only does your basic twist bit but thats all i have so. jim in minnesota [Non-text portions of this message have been removed]
RE: [BlindHandyMan] Drills
Hi, For the most part all I use are twist bits. So that might be worth looking into. Where did you get your Drill Doctor? Dave Working together, sharing the light of salvation seen through the cross of Jesus Rev. Dave Andrus, Director Lutheran Blind Mission 888 215 2455 HTTP://WWW.BLINDMISSION.ORG -Original Message- From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of jim Sent: Wednesday, February 03, 2010 2:40 PM To: blindhandyman@yahoogroups.com Subject: Re: [BlindHandyMan] Drills yes the drill doctor. i have the basic model and it does wonders. the instructions are easy to follow and it is easy to use. the basic model only does your basic twist bit but thats all i have so. jim in minnesota [Non-text portions of this message have been removed]
Re: [BlindHandyMan] Drills
I use the Drill Doctor and it works great. The latest model will sharpen from an eighth to 3 quarter drill bit. There is a guide with the Drill Doctor that makes it very easy for anyone to use. - Original Message - From: Dave Andrus To: blindhandyman@yahoogroups.com Sent: Wednesday, February 03, 2010 2:57 PM Subject: RE: [BlindHandyMan] Drills Hi, I am a relatively new member to the list and so appreciate your posting concerning drill bits. It does raise the question though of drill bit sharpeners. I had a friend show me how to sharpen bits on a grinder. I do a pretty good job with this when the bits is over 1/4, though not always perfect as I don't get the angel quite right. Are there any drill bit sharpeners out there that you would suggest? Dave Working together, sharing the light of salvation seen through the cross of Jesus Rev. Dave Andrus, Director Lutheran Blind Mission 888 215 2455 HTTP://WWW.BLINDMISSION.ORG -Original Message- From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of Ray Boyce Sent: Tuesday, February 02, 2010 10:48 PM To: blindhandyman@yahoogroups.com Subject: [BlindHandyMan] Drills Hi All We were discussing drills and drill sharpeners on VIP Conduit this afternoon in the Blind Handy Man Room and I said I would post an article on drills. I am sure I have posted this before but for the new members and for Geoff who I have a very high regard for here it is again. If you work long enough, you'll discover you really can't have too many drill bits. They're needed for numerous around-the-home, shop and contractor chores. Bits are available for drilling just about any material, including wood, the various metals, concrete, stone, tile and even glass. As you can guess, a wide variety of bits or tools for drilling are available for use with portable drills and drill presses. These include standard twist drill bits, auger bits, spade bits, Forstner bits, expansion bits, step-drill bits, hole saws, pilot-hole and screw bits, and plug cutters. Twist drill bits are the most common, and are available in a variety of sizes, materials and shapes. Show is a typical bit configuration. Twist Drill Bits Twist drill bits are some of the most common shop tools. They're available in a wide range of sizes, point and twist shapes, and these days they're not only available in standard industrial-grade steel, but also in exotic materials including titanium coated, black oxide and cobalt. Don't buy cheap bits. They're frustrating and can be dangerous, causing you to push or exert force when drilling. Drill bits are the most common tool accessory, a $740 million North American market. Drill bits are available in a wide variety of types, sizes and materials for specific metal- and wood-boring chores. Drill bit sizes come in four categories: fractional sizes, wire-gauge sizes, letter sizes and metric. Fractional sizes begin at 1/64 inch and run to more than 4 inches. The smaller bits increase in size by 64'ths, the mid-size bits by 32'nds and the larger bits by 16'ths. Wire-gauge numbers run from No. 1 through 80 (the smallest). All sizes are less than 1/4 inch and begin at 0.0135 inch (No. 80) up to 0.2280 inch (No. 1). The numbers correspond to standard wire sizes. These bits are used where exact hole dimensions are required, such as when tapping threads in holes. Letter size bits begin the next size up from No. 1 wire gauge. They begin at 0.2340 inch (A) and run to 0.4062 inch (Z). The largest size is smaller than 7/16 inch. These too are used to make precise hole sizes. And, of course, there are metric sizes in millimeters. One millimeter is equal to 0.0394 inch. Twist bits are commonly sold in a standard length, called jobber lengths, with the length varying according to the bit diameter. These will handle most of the jobs you'll tackle, but at times a longer length may be needed. In this case, extensions are available for 1/4-inch bit shanks. With many hex-heads available these days, an extension will fit most bit sizes, but they are designed primarily for woodworking, not metal chores. The next step in twist drill school is the point angle. Typically, 118 degrees is the most common angle. But these drills require a starting dimple in metal with a center punch, otherwise the bit will walk or skate away from the hole location. Bits with a 135 degree point will start their own hole in metal and, of course, can be used on many other materials. Brad-point bits provide even more precise starting in both metal and wood. Woodcraft Supply carries extra-long, 10-inch brad-point bits, handy for many furniture construction chores. The helix and flute angles are also important, and again these days there's more variety to choose from, depending on the job. The new
[BlindHandyMan] Drills
Hi All We were discussing drills and drill sharpeners on VIP Conduit this afternoon in the Blind Handy Man Room and I said I would post an article on drills. I am sure I have posted this before but for the new members and for Geoff who I have a very high regard for here it is again. If you work long enough, you'll discover you really can't have too many drill bits. They're needed for numerous around-the-home, shop and contractor chores. Bits are available for drilling just about any material, including wood, the various metals, concrete, stone, tile and even glass. As you can guess, a wide variety of bits or tools for drilling are available for use with portable drills and drill presses. These include standard twist drill bits, auger bits, spade bits, Forstner bits, expansion bits, step-drill bits, hole saws, pilot-hole and screw bits, and plug cutters. Twist drill bits are the most common, and are available in a variety of sizes, materials and shapes. Show is a typical bit configuration. Twist Drill Bits Twist drill bits are some of the most common shop tools. They're available in a wide range of sizes, point and twist shapes, and these days they're not only available in standard industrial-grade steel, but also in exotic materials including titanium coated, black oxide and cobalt. Don't buy cheap bits. They're frustrating and can be dangerous, causing you to push or exert force when drilling. Drill bits are the most common tool accessory, a $740 million North American market. Drill bits are available in a wide variety of types, sizes and materials for specific metal- and wood-boring chores. Drill bit sizes come in four categories: fractional sizes, wire-gauge sizes, letter sizes and metric. Fractional sizes begin at 1/64 inch and run to more than 4 inches. The smaller bits increase in size by 64'ths, the mid-size bits by 32'nds and the larger bits by 16'ths. Wire-gauge numbers run from No. 1 through 80 (the smallest). All sizes are less than 1/4 inch and begin at 0.0135 inch (No. 80) up to 0.2280 inch (No. 1). The numbers correspond to standard wire sizes. These bits are used where exact hole dimensions are required, such as when tapping threads in holes. Letter size bits begin the next size up from No. 1 wire gauge. They begin at 0.2340 inch (A) and run to 0.4062 inch (Z). The largest size is smaller than 7/16 inch. These too are used to make precise hole sizes. And, of course, there are metric sizes in millimeters. One millimeter is equal to 0.0394 inch. Twist bits are commonly sold in a standard length, called jobber lengths, with the length varying according to the bit diameter. These will handle most of the jobs you'll tackle, but at times a longer length may be needed. In this case, extensions are available for 1/4-inch bit shanks. With many hex-heads available these days, an extension will fit most bit sizes, but they are designed primarily for woodworking, not metal chores. The next step in twist drill school is the point angle. Typically, 118 degrees is the most common angle. But these drills require a starting dimple in metal with a center punch, otherwise the bit will walk or skate away from the hole location. Bits with a 135 degree point will start their own hole in metal and, of course, can be used on many other materials. Brad-point bits provide even more precise starting in both metal and wood. Woodcraft Supply carries extra-long, 10-inch brad-point bits, handy for many furniture construction chores. The helix and flute angles are also important, and again these days there's more variety to choose from, depending on the job. The new Bosch Speed Helix design has an aggressive flute structure engineered to remove material faster, and the 135-degree split point eliminates walking, making the bit more efficient, with up to three times faster penetration than bits designed with a standard helix. Quicker penetration also means less energy on the part of the drill turning the bit, as well as the user pressing down, which translates into more battery life for a cordless drill/driver and less fatigue on the part of the user. Twist drill bits are made of a variety of materials, with carbon steel the softest. High speed steel (HSS) bits are also available. As mentioned earlier, exotic materials these days include black oxide, titanium and cobalt. Each is designed for a specific purpose, and Bosch has introduced new designs in these bits as well. The Bosch High-Speed Steel Black Oxide bits are all-purpose for heavy-duty drilling in wood, plastic, carbon and alloy steels, aluminum and soft cast iron. Titanium is designed for repetitive heavy-duty drilling in wood, plastic, common stainless steels, carbon and alloy steels, and soft cast iron. The new Bosch titanium drill-bit line offers the industry's toughest titanium bits. By coating each bit with high-speed steel-titanium nitride, Bosch not only made the surface of the bit harder, in excess of 80 HRC
