35 - Revolving Tool Station, страница 19
FEATURE PROJECT Before assembling the base it's easiest to drill several large holes. There's a hole in the top for an iron pipe that serves as a pivot point for the turntable and carousel, see Fig. 2. Also, five holes in the bottom will be used when levelers are added later. assembly. At this point, you can begin assembling the base. I started by gluing up a U-shaped assembly consisting of one side and the two back pieces. Then I slipped the bottom in place and added the other side. Reinforcing each joint with screws helps strengthen the base. rails. To add even more rigidity, I installed two hardwood rails under the top and bottom, see Figs. 3 and 4. A long rail (F) spans from one side to the left back. And a shori rail (G) connects the long one to the opposite side. attach tor All that's left to complete the base is to attach the top. It's simply glued and screwed in place, see Fig. 4. Levelers. To compensate for an uneven floor, I added five levelers. They allow each outside corner of the base to be leveled independently. Basically, each leveler consists of two parts: a thick mounting block that attaches to the bottom of the base and an adjustable foot, see Fig. 5. By turning a bolt that passes through the center of each part, you can raise or lower the foot, see margin. mounting block. To provide plenty of strength, each mounting block (H) is made by gluing up two pieces of 3/4"-thick hardwood (maple), see Fig 5. Before gluing and screwing the mounting block >to the bottom of the base, you'll need to drill a counterbored shank hole for a T-nut that accepts the adjustment bolt, see Fig. 5a. foot. Once the block is in place, you can add the foot (I). It's a piece of 3/4"-thick hardwood that's captured on the end of the bolt by a pair of lock nuts. One nut rests in a counter-bored shank hole drilled in the bottom of the foot. The other tightens against the top of the foot to lock it in place. To raise or lower a leveler, simply turn the adjustment bolt with a socket wrench. No. 35 ShopNotes 19 |
