fall for the new machine shop, construct a plant, design and build new machine tools, train a work force and most importantly create a manufacturing process that would facilitate... and assemble virtually every product made in machine shops today. So think of Eli Whitney the next time your parts pass inspection. We have him to thank for the tolerances we hold... #2) Most machinists give little thought to the origins of our milling machine when we turn on the spindle. We probably give even less thought to how the system was developed...

options when it comes to mill work (off center holes, slots and so forth) on the ends of long rectangular parts or round shafts. Some choices are 1) horizontal milling machine 2...) right angle head 3) vee blocks 4) angle plates 5) machined soft jaws in a vise 6) collet closing fixture 7) turning a machine vise on its side 8) tumble fixture (more about... as a stop. Now, we need to machine an eccentric. Let s say the part to be machined is aluminum that is 4 x 2 x thick with light milling. This would require two 3/8" eccentrics with .030...

in blacksmith shops, others look like they were made in aero space machine shops, none are cheap. However, here is one that you can build on a budget and works better than most... or horizontal (down). As a side note, many years ago I worked machine maintenance in a large foundry. We had a shaker table that sheared a 1" key on the input side of its eccentric shaft... and in the process destroyed the keyway. The repair was not going to be easy. The shaft needed to be removed and a new keyway cut in the shaft. The machine weighed 20,000 lbs...

have a Powermatic disc/belt sander in my shop. This is a great little machine that gets a lot of use. Consequently, the sanding belts and discs wear out regularly. Changing... plate are still warm. The problem however is that most people usually walk away from the machine when they use up the disc. When cold, these discs are usually stuck so hard... of the machine, bring the cutting edge of the tool to the surface of the part and lock down the quill. Now place a .500 thick piece of material under the quill fly stop and spin...

of a sudden your mill sounds like a diesel locomotive going 90 miles an hour. Chips are hitting the mill guard like machine gun bullets. The tool hasn t completed two inches of cut when... setup on an excellent machine, why run a tool at .003 feed per tooth when the tool is capable of a feed rate of .006 per tooth? The tool doesn t care, it will be in the cut... story goes for depth of cut. I am not recommending that you use brute force on each job that comes through your shop. Every job is different and requires its own plan of attack. For...