Steel Speed
2 September 2010
Steel Speed
 |
 COMMERCIAL 18 HOTDOG ROLLER GRILL MAKER MACHINE $159.99 Time Remaining: 27d 12h 55m Buy It Now for only: $159.99 |
 BIG ORANGE 85 X 20 FOOD CONCESSION TRAILER CATERING BBQ FISH BRISKET HOTDOG $8,000.00 (30 Bids) Time Remaining: 3h 53m Buy It Now for only: $21,750.00 |
 Hobart Convenction Oven $550.00 Time Remaining: 6h 41m |
 Popcorn Machine supplies Stainless Steel speed Scoop $17.99 Time Remaining: 29d 11h 27m Buy It Now for only: $17.99 |
 11 Grease Makeup Air Exhaust Hood System Stainless Kitchen Vent Kitchen w Fans $3,599.00 Time Remaining: 7h 33m |
 Electric Ice Shaver Crusher Machine Sno Snow Cone Maker Stainless Steel Bowl NEW $69.98 Time Remaining: 6d 9h 4m Buy It Now for only: $69.98 |
 HOODMART 4 Restaurant Exhaust Hood System w Fire Suppression Ansul Vent Grease $3,495.00 Time Remaining: 8h 29m |
 NEW 12 x 48 Stainless Steel Grease Exhaust Only Hood System Vent Ventilation $2,570.00 Time Remaining: 9h 14m |
 CUISINAIRRECOMMERCIAL 5000W DUAL 6 LITER DEEP FRYER $139.80 Time Remaining: 17d 16h 2m Buy It Now for only: $139.80 |
 11 Restaurant Hood Grease Exhaust System Stainless Range Fume w fan HOODMART $2,300.00 Time Remaining: 10h 47m |
 BARTENDERS KIT 12 PIECES FREE SHIPPING $27.95 Time Remaining: 1d 18h 13m Buy It Now for only: $27.95 |
 Conveyor Baker $224.72 (7 Bids) Time Remaining: 11h 2m |
 All Stainless Steel Ice Shaver Maker Snow Cone Machine Sno Shaved Icee Electric $169.95 Time Remaining: 12h 3m Buy It Now for only: $186.95 |
 All Stainless Steel Ice Shaver Maker Snow Cone Machine Sno Shaved Icee Electric $159.90 Time Remaining: 7d 1h 14m Buy It Now for only: $159.90 |
 Two Speed Commercial Restaurant Vertical Stainless Steel Sausage Stuffer 15lbs $179.95 Time Remaining: 13h 21m |
 Robot Coupe R101 B CLR Commercial Food Processor Replaces R100 CLR Model $429.00 Time Remaining: 28d 10h 37m Buy It Now for only: $429.00 |
 All Stainless Steel Ice Shaver Maker Snow Cone Machine Sno Shaved Icee Electric $169.95 Time Remaining: 14h 33m Buy It Now for only: $186.95 |
 San Jamar Stainless Steel Speed Rack 8 Bottle Holder $39.00 Time Remaining: 14h 36m |
 250W Electric Ice Shaver 198 lbs Sno Snow Cone Maker Machine Blade Crusher Icee $94.90 Time Remaining: 3d 20h 53m Buy It Now for only: $94.90 |
 9 Makeup Air MUA Exhaust Hood System Fire Suppression Ansul Vent HOODMART New $5,699.00 Time Remaining: 14h 53m |
 10 Blade Electric Meat Slicer 240w 530RPM Deli Food w Dual Baffle Plate Kitchen $299.90 Time Remaining: 26d 21h 47m Buy It Now for only: $299.90 |
 Wisco 620 Cookie Baking 1300w 1 4 Pan Convection Oven $500.00 Time Remaining: 15h 2m Buy It Now for only: $550.00 |
 8 Restaurant Hood Exhaust System Stainless Steel Ventilation Range HOODMART $1,775.00 Time Remaining: 15h 3m |
 CHURRORELLENADORCHURROFILLER DONUTS FILLER 2 LtsAluminum container $235.00 Time Remaining: 20d 15h 8m Buy It Now for only: $235.00 |
 HOODMART 7 Restaurant Exhaust Hood Ansul System w Fire Suppression Kitchen $3,799.00 Time Remaining: 15h 13m |
 Welbon 36 Super Thin Commercial Air Curtain with Door Switch $258.99 Time Remaining: 15d 17h 27m Buy It Now for only: $258.99 |
 CENTURY 8 X 20 PROFESSIONAL CUSTOM FOOD CONCESSION CUBE W 1987 GMC BOX TRUCK $25,000.00 Time Remaining: 15h 14m Buy It Now for only: $30,000.00 |
 12 Restaurant Exhaust Grease Hood System w Fire Suppression Ansul Vent HOODMART $5,170.00 Time Remaining: 17h 21m |
 COMMERCIAL 18 HOTDOG HOT DOG 7 ROLLER GRILL MAKER MACHINE+ FREE CHEFS KNIFE SET $169.99 Time Remaining: 27d 12h 54m Buy It Now for only: $169.99 |
 HOODMART Makeup Air MUA Grease Exhaust Hood System 5 Vent Ventilation NEW $2,400.00 Time Remaining: 17h 35m |
 PARAGON SNOW CONE MACHINE SIMPLY A BLAST $439.00 Time Remaining: 7d 8h 48m Buy It Now for only: $439.00 |
 7 NEW Makeup Air Exhaust Grease Hood System w Fire Suppression Ansul HOODMART $4,899.00 Time Remaining: 17h 45m |
 HOODMART 11 Grease Exhaust Hood System w Fire Suppression Ansul Ventilation $5,000.00 Time Remaining: 17h 55m |
 Stainless Steel French Fry Bagger Scoop Popcorn Machine Fryer Right Hand Handle $17.90 Time Remaining: 28d 20h 19m Buy It Now for only: $17.90 |
 Great Northern Popcorn 8 oz Black Antique Style Popcorn Popper Machine With Cart $237.90 Time Remaining: 18h 1m Buy It Now for only: $261.95 |
 Electric ICE SHAVER SNOW CONE Machine Maker Stainless Steel Bowl $166.99 Time Remaining: 21h 12m Buy It Now for only: $166.99 |
 Red Antique Style Popcorn Popper Machine with Cart 8 Oz Great Northern Popcorn $255.90 Time Remaining: 18h 1m Buy It Now for only: $281.95 |
 Vintage Great Northern Popcorn Black Antique Style Popcorn Popper Machine 8 Oz $152.90 Time Remaining: 18h 1m Buy It Now for only: $168.95 |
 Cuisinart SM 70 1000 Watt 7QT Stand Mixer in Brushed Chrome $319.99 Time Remaining: 22d 18h 43m Buy It Now for only: $319.99 |
 4 Oz Black Bar Style Popcorn Popper Machine Table Top By Great Northern Popcorn $112.90 Time Remaining: 18h 1m Buy It Now for only: $124.95 |
 CUISINAIRRE 6L COMMERCIAL ELECTRIC DEEP FRYER 2500W $89.80 Time Remaining: 17d 15h Buy It Now for only: $89.80 |
 Red Antique Style Popcorn Popper Machine with Cart 8 Oz Great Northern Popcorn $237.90 Time Remaining: 18h 1m Buy It Now for only: $261.95 |
 Vintage Great Northern Popcorn Black Antique Style Popcorn Popper Machine 8 Oz $152.90 Time Remaining: 18h 21m Buy It Now for only: $168.95 |
 440LBS H NEW ICE SHAVER MAKER SNO SNOW CONE ICEE SHAVED MACHINE $166.99 Time Remaining: 15d 20h 43m Buy It Now for only: $166.99 |
 Red Antique Style Popcorn Popper Machine with Cart 8 Oz Great Northern Popcorn $237.90 Time Remaining: 18h 21m Buy It Now for only: $261.95 |
 PROCON CARBONATOR PUMP 125gph CO2 PUMPS $62.00 Time Remaining: 11d 10h 13m Buy It Now for only: $62.00 |
 9 x 48 Restaurant Exhaust Hood System w Fire Suppression Fan Hoodmart Inc $4,600.00 Time Remaining: 18h 35m |
 HOLMAN SERIES QCS ATC TOASTER MADE FOR ARBYS RESTURANT $300.00 Time Remaining: 20h 35m Buy It Now for only: $350.00 |
 New 10 QT Quart Bakery Dough Mixer Heavy Duty ETL $848.00 Time Remaining: 28d 17h Buy It Now for only: $848.00 |
 Stainless Steel French Fry Bagger Scoop Popcorn Machine Fryer Right Hand Handle $17.95 Time Remaining: 21h 29m Buy It Now for only: $20.95 |
 Standing Meat Cutting Cutter Band Saw Mincer Grinder Sausage Stuffer Stainless $314.95 Time Remaining: 15d 21h 54m Buy It Now for only: $314.95 |
 250W Electric Ice Shaver 25 Lb Heavy 198lb h Sno Snow Cone Maker Machine Crusher $104.95 Time Remaining: 22h 23m Buy It Now for only: $115.95 |
 Robot Coupe R2N clr 10 Cups Food Processor $790.00 Time Remaining: 23h 17m |
 22 Double Speed Rail Sr 22Dn $31.26 Time Remaining: 14d 8h 27m Buy It Now for only: $31.26 |
 Waring WSB50 Immersion Mixer with 12 Shaft NEW $179.00 Time Remaining: 1d 5h 26m |
 Commercial Refrigerated Sandwich Prep Table 48 $1,155.00 Time Remaining: 4d 15h 19m Buy It Now for only: $1,155.00 |
 Electric Convection Ovens Full Size PULSE DEEP DEPTH GARLAND Bakery Depth $3,699.00 Time Remaining: 1d 9h 15m Buy It Now for only: $4,100.00 |
 Edlund 203 Two Speed Tabletop Electric Can Opener 115V NEW $255.00 (2 Bids) Time Remaining: 1d 10h 5m |
 440LBS H Ice Shaver Machine Sno Snow Cone Maker Shaved Icee Electric Crusher $141.99 Time Remaining: 15d 20h 42m Buy It Now for only: $141.99 |
 Deni Classic Professional Electric Food Slicer 75 Stainless Steel Blade NIB NR $29.95 Time Remaining: 1d 12h 18m Buy It Now for only: $49.95 |
 NEW Hamilton Beach Soda Malt Milkshake Mixer 2DaysShip $46.97 Time Remaining: 2d 22h 8m Buy It Now for only: $46.97 |
 FREE 2 SAW BLADE UL 3 4HP MEAT SAW BUTCHER BANDSAW +GRINDER STUFFER MINCER $322.00 Time Remaining: 1d 12h 22m |
 KitchenAid Artisan KSM150PS 325 Watts Stand Mixer White Amazing Condition $99.00 (6 Bids) Time Remaining: 1d 14h 40m |
 Popcorn Machine supplies Aluminum speed Scoop $16.99 Time Remaining: 24d 10h 11m Buy It Now for only: $16.99 |
 NEW 7 Restaurant Makeup Air MUA Grease Exhaust Vent Ventilation Hood System $2,700.00 Time Remaining: 1d 15h 8m |
 Fma Omcan 15 Hp 20 Qt Commercial Dough Food Mixer Gear Driven 20441 SP200AE $995.00 Time Remaining: 12h 40m Buy It Now for only: $995.00 |
 BERKEL COUNTERTOP MB STAINLESS STEEL BREAD SLICER MOUNTED ON STAND 7 16 $845.00 Time Remaining: 1d 15h 57m Buy It Now for only: $995.00 |
 Bread Pans Lot of 3 1 lb Loaf 5 Strap Bundy Chicago Metallic Bakery Equipment $115.00 Time Remaining: 1d 16h 22m |
 440 lbs 250W Ice Shaver Machine Sno Snow Cone Maker Shaved Icee Electric Crusher $169.90 Time Remaining: 7d 1h 14m Buy It Now for only: $169.90 |
 Vintage Style Red Popcorn Popper Machine 8 Ounce By Great Northern Popcorn $152.90 Time Remaining: 1d 18h 1m Buy It Now for only: $168.95 |
 Robot Coupe R2N CLR Food Processor Includes 2 Discs and even more Accessories $956.00 Time Remaining: 6d 7h 17m Buy It Now for only: $956.00 |
 Hamilton Beach Commercial Power Blender Model 91400 $29.99 Time Remaining: 1d 18h 43m |
 Crathco D25 3 Double 5 Gal Bowl Refrig Drink Dispenser Bottom Unit Only $160.00 (1 Bid) Time Remaining: 1d 18h 50m |
 PROFESSIONAL SHAVED ICE SHAVER MACHINE ICEE SNOW CONE $143.85 Time Remaining: 5d 13h 40m Buy It Now for only: $143.85 |
 Crathco D25 3 Double 5 Gal Bowl Refrigerated Drink Dispenser Bubbler SS $305.00 (7 Bids) Time Remaining: 1d 18h 50m |
 NEW ICE CRUSHER MACHINE SHAVED SNOW CONE MAKER 143LBS H $89.95 Time Remaining: 28d 16h 38m Buy It Now for only: $89.95 |
 CUISINAIRRECOMMERCIAL 5000W DUAL 6 LITER DEEP FRYER + FREE 3 PC CHEFS KNIFE SET $135.00 (45 Bids) Time Remaining: 1d 19h 46m |
 COMMERCIAL 18 HOTDOG ROLLER GRILL MAKER MACHINE $73.99 (11 Bids) Time Remaining: 1d 19h 49m |
 NEW 8 BLADE ELECTRIC COMMERCIAL MEAT DELI FOOD SLICER $255.90 Time Remaining: 5d 21h 9m Buy It Now for only: $255.90 |
 CUISINAIRRECOMMERCIAL 5000W DUAL 6 LITER DEEP FRYER $113.48 (10 Bids) Time Remaining: 1d 19h 53m |
 HOTTOP PROGRAMMABLE B P COFFEE ROASTER + FREE COFFEE + FREE SHIPPING $899.99 Time Remaining: 28d 14h 32m Buy It Now for only: $899.99 |
 CUISINAIRRECOTTON CANDY FLOSS MAKER MACHINE 1100W MAX $224.39 (28 Bids) Time Remaining: 1d 20h 1m |
 CUISINAIRRE 6L COMMERCIAL ELECTRIC DEEP FRYER 2500W $46.00 (9 Bids) Time Remaining: 1d 20h 8m |
 Thunder Group SLSPR022S 22 Single Speed Rail $15.28 Time Remaining: 17d 9h 29m Buy It Now for only: $15.28 |
 CUISINAIRRE 6L COMMERCIAL ELECTRIC DEEP FRYER 2500W + FREE 3 PC CHEFS KNIVES $66.00 (11 Bids) Time Remaining: 1d 20h 16m |
What type of drill bit is strongest for drilling holes on hard metals such as harderned steel?
I went to DIY shop and saw many types of drill bits such as diamond, carbide, tungsten, high speed steel, cobalt, etc. But i am a layman where those materials are concerned. Any experienced handyman here who know what type of drill bits is best (and 2nd best if the price differ a lot) to drill holes in tough metal?
Thanks.
This depends on the hardness of the steel in question.
Ordinary twist drill bits are only about 65 rockwell C. (Nearly all steel bits are high-speed steels these days.) Hence they simply will not work on the hardest tool steels, and will wear very quickly on medium-hardness, high strength steels. The most practical option is to anneal the part before drilling or machining.
Cobalt bits are only slightly harder, maximum 67-68 RC. The advantage of cobalt bits is they have better heat resistance than high-speed steel bits, hence they can be used at somewhat more aggressive cutting rates and are less likely to burn up. For example, cobalt bits work well for stainless steels which have rapid work-hardening properties.
For drilling tool steels in the fully hardened condition, you need special-purpose tungsten carbide, diamond, or boron nitride tooling. You also generally need a milling machine. (Note:Masonry bits do not work well for this because the points on these bits are too broad. Masonry bits are designed to crush and grind, not cut.)
This is usually not worth the difficulty and expense anyway, it's much easier to anneal first, then drill & machine, then re-harden.
