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I J a. HEIGHT ADJUSTMENT p SUPPORT .wwyimwwim^iiiviiu I £ RUB BLOCK #6 x W Fh SCREW I 9'/2 NOTE: RUB BLOCK IS THREE LAYERS OF V-THICK HARDWOOD. HEIGHT ADJUSTMENT SUPPORTS ARE ^"-THICK HARDWOOD tE) HEIGHT ADJUSTMENT SUPPORT (3 x V-16 THROUGH KNOB NOTE: THREADED ROD IS GLUED TO KNOB WITH EPOXY RUB BLOCK Painting the Base. If you plan to paint your thickness sander, you'll want to do that now. For more information on getting great results when painting MDF, turn to page 23. Adjusting the Height. A thickness sander is only as good as the mechanism for fine-tuning the thickness of a workpiece. This height adjustment mechanism is a two-part system. One part is attached to the conveyor (more on this later), while the other half mounts to the base (Figure 2). The main part of the system attached to the base is a 2V4"-thick hardwood rub block that's curved along the top edge, as illustrated in Figure 2. Later, this block will support a similar pair of blocks that will allow you to fine-tune the height of the conveyor. A through hole and a counter-bore for a threaded insert allows you to use a knob and threaded shaft to move the block back and forth between two hardwood mounts. This movement raises and lowers the conveyor so you can accurately thickness a workpiece. Once you have the mounts sized and located, as in Figure 2a, you can cut the threaded shaft to length. Then, it's just a matter of gluing the knob in place with epoxy, and installing the rub block. Materials & Hardware BASE A Base (1) 223/4 x Custom Fit - 3/4 MDF Base Cleats (2) 3/8 x lA - 223/4 Miter Slot Key (1) J/8 x 3/4 - Custom Length Inner Support (2) 10 x 17 - 3/4 MDF Outer Supports (4) 7 x 10 - 3/4 MDF Height Adjust Supports (2) 3/4 x 3 - 3/2 2Va x V/2 - 4 l'/2 x V/2 - 3/4 MDF 17 x 183/4 - V2 Ply. 1 x 23/8 -103/4 H x V2 -17/8 3/4 x lV2 - 5'/2 3/4 x 3V2 -18% Rub Block (1) CONVEYOR ASSEMBLY H Roller End Plugs (12) Platens (2) Sides (4) Side Stops (8) Conveyor Rub Blocks (2) Rub Block Support (1) SANDING DRUM N Drum Disks (19) 5'/Vdia. rgh. - 3/4 MDF O Drum Lock Disks (2) 5Vi6-dia. rgh. - 3/4 MDF P End Disks (2) 5M6-dia. rgh. - 3/4 MDF Q Lock Wedges (2) 3/4xl-l'/8 BELT GUARD 8. DUST HOOD R Door (1) 7 x 10s/8 - lA MDF S Back (1) ls/6 x 10s/8 - 3/4 MDF T Front (1) V/7 x 105/8 - 3/4 MDF U Dust Hood Ends (2) 49/i6 x 6'/2 - 3/4 MDF V Dust Hood Front/Back (2) 3/8 x l3/4 - 25 W Hinge Support (1) 3/4 x V/2 - 18% X Vacuum Hose Port (1) 33/8 x 33/8 - 3/4 MDF (28) #8 x V/2 Fh Woodscrews (5) 3/8"-16 Threaded Brass Inserts (4) V2" x V2" Bronze Sleeve Bearings (1) V2 x 211/2" Steel Rod (1) V2 x 18H" Steel Rod (4) V2" Flat Washers (3) j/8"-16 Lock Nuts (8) J/8" Flat Washers (2) 3/8"-16 x AV2 Threaded Rods (2) lVi" x 16" Schedule 40 PVC Pipes (1) Handle and Set Screw (1) 6" x 48" Sanding Belt (100-Grit) (4) 3/8"-16 x 2" Studded Knobs (2) Pillow Blocks (1) 3/4" x 24" Steel Rod (2) 3/16" x 23/4" Steel Rods (4) s/i6n x 1V2 Ug Screws (4) 5/i6" Flat Washers (1) 5" x 3/4" 4L Pulley (1) 2" x s/8" 4L Pulley (1) 4L440 V-Belt (44") (2) W-20 x V/2 Rh Machine Screws (2) 1/4"-20 Threaded Brass Inserts (1) 3/8"-16 Through Knob (1) 3/8"-16 x 13" Threaded Rod (4) #8 x 1" Fh Woodscrews (10) #6 x 3/4" Fh Woodscrews (1) ll7/8n x 25" Polycarbonate Sheet (0.04" Thick) (12) M6 Finish Washers (12) #6 x H" Fh Woodscrews (1) V/2 x 105/8" Piano Hinge w/screws (1) V/2 x 18" Piano Hinge w/screws (2) 3/8" x V/2 Fender Washers (1) Cloth Electrical Tape (2) Latches w/screws (1) Magnetic Catch Also Needed: One sheet of 3/4" MDF, one-half sheet of V2 Baltic birch plywood, and approximately 3 bd. ft. of hardwood. 31 |
