Practical blacksmithing Volume 2 - Tapa blanda

Sinopsis

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1889 edition. Excerpt: ...Mold-Board. If you want to drill a hole or file ai plate or ploughshare, or other piece of it on the fire level until it is cherry red, with tongs lay a bit of brimstone on the wish to soften, the piece of brimstone being less in diameter than the ho'e you need. Leave the iron on the fire until cold enough to handle and it will yield to your tools.--By D. T. Holding Long Bars in Drilling. A good method of holding long bars of iron, such as sled shoes, so that the holes can be drilled in them easily by one person, is as follows: Take a strong %-inch cord or rope and fasten it to the ceiling about five, six or seven feet from the drilling machine, then fasten a pound nut on the end of the rope and let it reach nearly to the floor. When you wish to drill iron, wrap the rope around the iron once at the height you want and you will find that you will have a very handy tool. You can drive a nail so as to hang it up out of the way when not in use.--By A. W. B. Drilling Glass Stick a piece of stiff clay or putty on the part where you wish to make the hole. Make a hole in the putty the size you want the hole, reaching to the glass, of course. Into this hole pour a little molten lead, when, unless it is very thick glass, the piece will immediately drop out. Straightening Shafts or Screws--A Remedy for Dull and Squeaking Drills. Every machinist who has ever attempted to straighten a polished shaft or screw knows the difficulty of marking the point of untruth when the work is revolved on the centers of a lathe. By procuring a piece of copper pointed on one end and of a shape suitable to fill the tool post, and allowing it to touch the work as it turns, a red mark will be left, even on a brightly polished surface, and this will furnish the desired guide for...

"Sinopsis" puede pertenecer a otra edición de este libro.