User manual CRAFTSMAN 315-174771

[. . . ] 315. 174771 CAUTION: Read Rules for Safe Operation and Instructions Carefully CRAFTSMAN® ELECTRONIC ROUTER SAVE THIS MANUAL FOR FUTURE REFERENCE DOUBLE INSULATED Introduction Operation Maintenance Repai r Parts '--- Designed exclusively for and sold only by SEARS, ROEBUCK AND CO. , Dept. 698/731A, Sears Tower, Chicago, IL 60684 612547·563 11·88 PRINTED IN U. S. A. FULL ONE YEAR WARRANTY ON CRAFTSMAN ELECTRONIC ROUTER If this Craftsman Electronic Router fails to give complete satisfaction within one year from the date of purchase, RETURN IT TO THE NEAREST SEARS STORE THROUGHOUT THE UNITED STATES and Sears wi II repair it, free of charge. If this router is used for commercial or rental purposes this warrant y applies for onl y 90 days from the date of purchase. This warranty gives you specific legal rights , and you may also have other rights which vary from state to state. [. . . ] 6 Under extreme forcefeedi ng conditions the relative . RPM of the bit can become so slow - and the bites it has to take so large - that chips wi ll be partially knocked off (rather than fully cut off), with resu lting splintering and gouging of the workpiece. Your Craftsman Electronic Router is a high-speed tool (up to 25, 000 rpm no-load speed), and will make clean, smooth cuts if allowed to run freely without the overload of a forced (too fast) feed . What const itutes " force-feed ing " depends upon three things. Bit size, depth-of-cut, and workpiece characteristics. Th e larger the bit or the deeper the c ut, the more slowly the router can be moved forward. And, if the wood is very hard, knotty, gummy or damp, the operation must be slowed still more. TOO SLOW FEEDING It is also possib le to spoil a cut by moving the router forward too slowly. When it is advanced into the work too slowly a revo lving bit doesn't dig into new wood fast enough to take a bite; instead, it simply scrapes away sawdust-like particles. Scraping produces heat, which can glaze, burn, or mar the cut in extreme cases, can even overheat the bit so as to destroy its hardness . In addition, it is more difficult to control a router when the bit is scraping instead of cutting. With practically no load on the motor, the bit will be revolving close to top rpm for the selected speed, and will have a much greater than normal tendency to bounce off the sides of the cut (especially, if the wood has a pronounced grain with hard and soft areas). As a result, the cut produced may have rippled, i nstead of straight, sides. See Figure 7_ You can detect "too-slow feeding " by the no-load sound of the motor, or by feeling the "wiggle" of the bit in the cut. TOO FAST TOO SLOW Fig. 7 Page 7 OPERATION PROPER FEEDING The right feed is neither too fast nor too slow. It is the rate at which the bit is being advanced firmly and surely to produce uniform chips - without hogging into the wood to make large individual chips or, on the other hand, to create only sawdust. If you are making a small diameter, shallow groove in soft, dry wood, the proper feed may be about as fast as you can travel your router along your guide line. If the bit is a large one, the cut is deep, or the wood is hard to cut, the proper feed may be a very slow one. Then, again, a cross-grain cut may require a slower pace than an identical cut with the grain in the same workpiece. Good judgement with the proper use of the Electronic feature will give best results. by listening to the router motor and by feeling the progress of each cut. If at all possible, always test cut on a scrap of the workpiece wood, beforehand . DEPTH OF CUT As previously mentioned, the depth of cut is i mportant because it affects the rate of feed which, in turn, affects the quality of a cut (and, also, the possibility of damage to your router motor and bit) . [. . . ] Study all safety rules and do the job safely. Make certain clamps can't loosen while in use. Test difficult set·ups on scrap Don't waste lumber. Plan each operation before you begin . THINK SAFETY BY THINKING AHEAD. Page 12 NOTES Page 13 ---- CRAFTSMAN ROUTER - M ODEL NUMBER 3 1 5 0 1 7 4 7 7 1 , 23 14~ ti 10 <f727 21~ 20 ~ Page 14 [G 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 (25 26 27 28 29 30 CRAFTSMAN ROUTER - MODEL NUMBER 315. 174771 The Model Number w ill be found on a plate attached to the End Cap. [. . . ]