You will need to cut your choice of molding into 10 equal lengths of 16 1/2 inches each and 5 lengths of 12 inches. Pre-drill holes in the 16-inch length 1/4 inch from the bottom and the top, as well as a hole dead center. There should be three holes per length. Pre-drill a hole in the end of each 12-inch length. Assemble a figure H with two 16 1/2-inch lengths on either side and a 12-inch length in the middle. Using the wood screws attached the lengths together, but do not completely tighten. You should end up with five figure H’s.
Place the two flat blocks long ways and parallel, where you want your shelf. Measure the inside of the blocks to be exactly a distance of 13 inches distance apart. Place the first wooden plank on top of these. Either end should have a 2-inch overhang. Drill a hole in the top of a plank centered above the block, then drill a 1 1/2-inch concrete screw into the plank and block.
Stand two cinder blocks up right on top of the first plank. Each block should be placed on the outside of the block underneath, measuring an interior distance of 28 inches apart. The holes of the blocks should be facing out. This is not a requirement; however, the side without the holes facing out will take up more space within the rack. Lay another plank on top of these blocks aligned with the bottom plank. Again there should be a 2-inch overhang on each side. Drill a hole in the top of a plank centered above the block, and repeat concrete-screw step.
Measure the center distance between the upright cinder block and edge of the bottom plank. Attach one of your figure H’s to the plank with wood screws and pre-drilled holes. Repeat this step with the other side.
Stand the last two blocks upright on this plank aligned with the inside of the bottom blocks. The interior distance should be 13-inches apart of the top two blocks. The direction of the holes in the block should be uniform. Lay the last plank on top of these, making sure it is aligned with the others.
Measure the distance between the top two upright blocks and divide by three, then mark the spots. Attach the figure H’s to the top shelf as before. Using the screwdriver, tighten all the figure H screws.
The top shelf should not be used to place LP’s as there is no way to make them stand; however, storing other heavy items, including the record player itself, is no problem. This rack can hold a total of 275 to 300 vinyl LPs.