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The Newbies Arena New to Knife Making? Here's all the help you need ...

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  #1  
Old 01-04-2017, 01:23 PM
Russ W. Russ W. is offline
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Location: Suwanee, GA
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Hard lawnmower blade

Brand new so don't laugh. Trying to drill through a lawnmower blade and the drill starts cutting fine and then dead stop (drill still turning but not cutting). Bought new Cobalt bit and nothing, it's not going anywhere. Any thoughts.
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Old 01-04-2017, 01:45 PM
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Ray Rogers Ray Rogers is offline
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Yes, two thoughts. One, you should be using 1084 if this is one of your first blades. Easy to get, cheap, and avoids the problems you're having plus it makes a better blade.

Two, lawnmower blades aren't 'hard' in knife terms - a real knife would be considerably harder. Lawnmower blades are made to be tough, if they were 'hard' they would break pretty quickly. That said, if you want to drill a hole in steel that is not fully annealed (which would include lawnmower blades) you need carbide drills. The proper drill would be a straight flute carbide drill but you would have to go to a machinists supply like MSC to find that. Your local hardware store will probably have carbide tipped masonry drills and they will work. They drill sloppy, ugly, holes in steel but they will punch a hole for you ...


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Old 01-04-2017, 02:19 PM
Russ W. Russ W. is offline
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Thanks. First knife so I grabbed a old lawnmower blade. You suggest 1084 vs 1095? Since the lawnmower knife is looking pretty good I'm ready to spent some money on steel.
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Old 01-04-2017, 02:33 PM
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Ray Rogers Ray Rogers is offline
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1080 or 1084 definitely, not 1095. 1095 is great steel but you should have a fast oil for it and you probably don't. 1080 and 1084 are very forgiving steels and easy to heat treat, done correctly they make excellent blades. See the Stickies at the top of the forum for a list of suppliers that should have these steels ...


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