Woodworker's Journal 1992-16-5, страница 32
Special Techniques Continued Plwto 22 Photo 23 Turning Trivets Another product suitable tor turning on your new vacuum chuck is a round trivet, These can be made from most any type of wood and there are no rigid rules for their size or shape (Fig. 5). Use the same template (for routing the recess) and chuck as for the pocket mirrors. Start by cutting various size circles from whatever scrap you have around the shop. They can be anything from -4 to 12 in. diameter. Thickness can be almost anything from 3/* to I in.; you might even go down to '/i in. for smaller trivets. Use a compass to mark a circle the same si/e as your template on the bottom of each blank. Tins will make it easy to center the template on the blank. Since cach blank is going to be a different size, you cannot use the work-32 holding fixture that we enjoyed for the pocket mirrors Instead, clamp the blank to your bench and use doublefaced tape to attach the template to your workpiece. Put the tape on the underside of the template, then remove the paper liner. Dust off the workpiece to ensure good adht .ion between it and the template. Align Ihe hole in the template with the circle drawn on the blank, and press the iwo together. Using the same router, template guide and bit that you used for the mirrors, route the hack of the blank. I'se the mirror chuck to attach the blank to the lathe (Photo 24). You will need to reduce the lathe speed for turning larger trivets but about 1200 rpm should be fine for anything up to about 6 in. dia. Rough turn ihe (rivet to round 1 OIA.. WITW <X»T> C>i/v \NWvt . He Photo 24 using the 7k in. deep fluted bowl gouge (Photo 25). Ai this point, you are on your ow n. lei your imagination run wild. You can create a variety of edge profiles. Try them all: bullnose, square, beveled or a combination of several. Also be creative with the face of your trivets, using beads and coves, or a series of rings cut w iih ihe up of the skew i Photo 26). You can even just leave them plain and Hat. Sand ihe trivel with a power sander and h\ hand as required by the type of wihkI you are using. 1 usually slop at 320 or -Mx> grit. Finish with urethane oil (available from Craft Supplies. USA). Apply a liberal coat and let it penetrate lor about 15 minutes, then wipe off the excess and let dry overnight. GJ] Vacuum Chuck Kit The EZ Vacuum Chuck kil contains a male quick disconnect coupler, a sealed ball bearing, a tapered hand knob for easy attachment of the vacuum source, a threaded tube which is adjustable to most spindle lengths, a nose assembly with vacuum venis and an adjustable or removable center point. List price tor ihe EZ Vacuum Chuck kit is $49.95 plus S & H from The Turning Post, 619 North 2000 West, Ogden. UT 84404: tel. (801) 7311036. The Wood*(trier's Journal |
