Assessments - 3, GPA: 4.3
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By referring to these tables, you can discover the recommended speeds for each type of accessory. Look these tables over and become familiar with them. Ultimately, the best way to determine the correct speed for work on any material is to practice for a few minutes on a piece of scrap, even after referring to the chart. You can quickly learn that a slower or faster speed is more effective just by observing what happens as you make a pass or two at different speeds. When working with plastic, for example, start at a slow rate of speed and increase the speed until you observe that the plastic is melting at the point of contact. Then reduce the speed slightly to get the optimum working speed. Some rules of thumb in regard to speed: 1. Plastic and other materials that melt at low temperatures should be cut at low speeds. 2. Polishing, buffing and cleaning with a wire brush must be done at speeds not greater than 15,000 RPM to prevent damage to the brush. 3. Wood should be cut at high speed. 4. Iron or steel should be cut at high speed. If a high speed steel cutter starts to chatter — this normally means it is running too slow. 5. Aluminum, copper alloys, lead alloys, zinc alloys and tin may be cut at various speeds, depending on the type of cutting being done. Use paraffin or other suitable lubricant on the cutter to prevent the cut material from adhering to the cutter teeth. Increasing the pressure on the tool is not the answer when it is not performing as you think it should. Perhaps you should be using a different accessory, and perhaps an adjustment in speed would solve the problem. Leaning on the tool does not help. Let speed do the work! Assembly & Operation of Attachments Flex-Shaft 225 WARNING ! Not for use with router bits. Use with router bits will cause kickback. INSTALLATION INSTRUCTIONS It is extremely important to carefully read and follow the directions to assemble the flex-shaft to your rotary tool below to ensure the tool will function properly. Attention: For optimum performance, allow your new flex shaft attachment to run at high speed on your rotary tool in a vertical position for 2 minutes before use. STEP 1 To properly attach the flex-shaft to the rotary tool, THREE items must be removed from the tool: the housing cap, collet nut and collet. Step 1. Press the Shaft lock button, unscrew and remove the collet nut. Page 12 DM 2610925474 10-04 10/19/04 3:40 PM Page 13 STEP 3STEP 2 Step 2. Unscrew the housing cap from the tool. Step 3. Remove the collet. Note: If the collet nut and collet are not removed from the motor shaft, the tool will not function properly. STEP 4 Step 4. Install the driver cap on the motor shaft and tighten. CAUTION! To prevent damage to tool, do not overtighten driver cap. Tighten the driver cap finger tight and then tighten an additional 1/3 turn with the wrench. (Wrench included with your rotary tool kit) STEP 5 Step 5. Attach by screwing the collar of the flex-shaft to the rotary tool. Make sure the square end of the center core engages the square hole socket in the driver cap. CAUTION! Do not pull out center core to engage into driver cap. This could cause disengagement of center core from handpiece. If tool stops when shaft is bent, center core may be lodged in driver cap. Loosen shaft and remove core from driver cap. Then screw flexible shaft onto rotary tool housing again. OPERATING INSTRUCTIONS Disengagement of the Flex-Shaft The flexible shaft may become disengaged if the motor of your rotary tool is not elevated higher than the working end of the flex-shaft. The #2222 Rotary Tool Stand is recommended to hold the rotary tool at the proper height. Collet and Accessory Assembly The collet assembly consists of a collet nut and collet. Take the collet nut and collet that were removed from your tool in step 2 and 3 and insert them into the tip of the flex-shaft handpiece. Insert an accessory or bit as deeply as possible to avoid wobble during use. With the shaft lock button engaged on the flex-shaft handpiece retighten the collet nut. Collet Removal and Replacement Four different size collets to accommodate different shank sizes, are sold separately for your flex-shaft. To install a different collet, remove the collet nut and remove the old collet. Insert the unslotted end of the collet in the hole in the end of the flex-shaft. Replace collet nut on the shaft. Always use the collet which matches the shank size of the accessory you plan to use. Never force a larger diameter shank into a collet. FLEXIBLE SHAFT LUBRICATION — The flexible shaft should be lubricated after every 25-30 hours of use. To lubricate, unscrew the flexible shaft assembly from the motor housing. Pull the center core out of the flexible shaft assembly. Wipe a very thin film of a good quality, high temperature grease on to the center core. CAUTION! To prevent damage to tool do not over grease shaft. Too much grease will cause the unit to overheat. Dremel shaft lubricant No. 5990952 or automotive whe...
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