35 - Revolving Tool Station, страница 18
FEATURE PROJECT Mounting a number of roller bearings to the top and bottom of the tool station allow the carousel and turntable to spin easily. 3a eeI began work on the tool station by making an open, L-shaped base cabinet, see drawing. The shape of the base will provide easy access to the turntable that's added later. And it provides leg room when working at the tools on the carousel. sides & backs. The base starts out as two sides (A) and a right (B) and left back (C) piece, see Fig. 1. (I used 3/4" MDF, but plywood would work just as well.) These pieces are held together with simple butt joints. So to allow for the joinery in the back corner, the right back is wider (33%") than the left back (33"). After cutting the pieces to size, there's one more thing to do before moving on to the top and bottom. That's to cut a dado in each piece for the bottom of the base, see Fig. la. top & bottom. Besides holding the case together, the top and bottom provide a surface for mounting a number of roller bearings, see margin. The roller bearings on the bottom make it easy to spin the turntable around, while those on top allow you to rotate the carousel. Both the top (D) and bottom (E) start out as a square piece of 3/4" MDF, see Fig 2. But to create an overhang, the top is larger than the bottom. notch. With the pieces cut to size, the next step is to cut a large notch in each one so they don't extend into the opening in front of the base. While you're at it, rout a small (Vg") chamfer on the top and bottom edges of the top and the exposed edges of the bottom. attach rollers. Now you're ^^ ready to attach the rollers to the ^^ top and bottom. After spacing the rollers evenly around the perimeter of a large circle, they're screwed in place, see Fig. 2. Note: To provide plenty of support near the edge of the carousel, the circle on top has a larger radius (16") than the one on the bottom (13"). 1" ROLLER o BEARINGS RIGHT BACK LEFT BACK BOTTOM 1" ROLLER BEARINGS LONG RAIL SIDE NOTE: top, bottom, sides, and backs are %" mdf; rails, mounting blocks, and feet are %"-thick hardwood MOUNTING SHORT BLOCK / RA|L FOOT SIDE LEFT BACK RIGHT BACK %" panhead 1" roller rout 1/e" chamfer on all edges BOTTOM (33%" x W-DIA. NOTE: both parts n^ made from mdf of notch only 18 ShopNotes No. 35 |
