Bear in mind that the dimensions of this bench will not be suitable for everybody; it will depend on the height of the person using the weight bench. The bench is about 3.75 feet long which is an average size.
The Bench plan can be viewed/downloaded here>>> Weight Bench Plan/Drawing To download a copy, right click then "Save Target As" then hit "Save".
NOTE: This built is not designed for serious heavy weight lifting.
Materials you need:
4 ft. of 3/4 x 12 piece of plywood or solid wood
3 ft. of 1 x 2 wood
8 ft. of 2 x 2 wood
8 ft. of 4 x 4 wood post
1 (#10) 8" bolt and nut
2 (#8) 3" bolt and nuts
1 (#10) 12" bolt/screw and 4 bolt nuts
8 (#10) nylon washers
14 (#10) flat washers
4-3 inch long lag screws
4 rubber or rubberized feet
Some nails and wood glue
Wood stain and Polyurethane protective sealant (Optional)
Tools you need:
Miter saw (optional)
Power drill with drill bits, Forstner bit and the like (used to counter sink lag screws)
Socket wrench/ pliers
Sander or Sand paper
Pictured below is the finished weight bench.
Use (#10) 8" bolt and nut to fasten the adjustable backrest support to the bench top. Place a nylon washer in between the metal flat washers to minimize friction during operation.
Again, refer to the bench plan/illustration where to cut the notches on the bench top support; this is where the swing arm support will rest during use. If you prefer, you can eliminate some notches thus limiting the angle it can be adjusted.
The second picture shows how it should look like after the adjustable backrest support and swing arm are bolted in place. Note that everything should be flush with the bench top support when in neutral/flat position.