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bounce, yer money order will get lost in the mail and yer dog won't come home. click on our "Contact Us" icon above for the quickest response to your questions. DEEP HOLE DRILLING DRILL LATHE CUTTING TOOL DEEP HOLE DRILLING DRILL LATHE CUTTING TOOL DEEP HOLE DRILLING DRILL LATHE CUTTING TOOL DEEP HOLE DRILLING DRILL LATHE CUTTING TOOL DEEP HOLE DRILLING DRILL LATHE CUTTING TOOL DEEP HOLE DRILLING DRILL LATHE CUTTING TOOL DEEP HOLE DRILLING DRILL LATHE CUTTING TOOL This is the way the old-timers did it, simply but accurately! These are methods you can duplicate yourself without a shop full of expensive equipment. Yes, you can now drill a hole, straight and true, all the way to China. Well, almost. You get a complete reprint of Machinery Reference Series Booklet No. 25 from 1910 and two later articles from Machinery Magazine. Part one covers the basic problems of deep hole drilling using twist drills, flat drills, getting chips out, errors in drill sharpening, number of desirable edges and so on. Next, you learn how the big boys could accurately drill out a cannon barrel and then bore it using a forged gun-steel boring bar over 61' long and 11" in diameter. Other examples are discussed. The final topic covers the construction of deep hole drills needed to drill out spindles of machine tools and axles of steam locomotives. Obviously, we don't need to drill castings or forgings this large, (Do we?!!!) but the principles hold. And these basic methods really did produce remarkably precise machines and armament. Finally, two articles from Machinery Magazine of the 1920's discusses how a mistake created a remarkable result while boring shotgun barrels, and how one machinist made a drill bit to cut a 9/32" hole more than 15" deep. Soft cover 5-1 /2" X 8-1 /2" booklet, 48 pages, well illustrated! Visit my MarketplaceAdvisor Gallery! Power Tools for Power Sellers! Phone: (***) 744-4449 M-F 9:00 to 4:00 Pacific Standard Time This item has been seen by alt people! (We do not proofread any ads submitted by members) |
Carolyn-Austin@desmoines-classifieds.com (Carolyn Austin) for more information. Your emails will be instantly forwarded to the poster's private address.
