You can use almost any of them as long as they are about 3" in length and have a 3/8" diameter. However, hook bolts come in a variety a shapes and sizes. Free ramp plans for a 4 foot mini halfpipe, 8 foot vert halfpipe, 4 foot quarterpipe, grind box and funbox, instructions include step by step pictures and. The bolt at the bottom of the illustration on the right is also known as a clothesline hook and is the most common for this application. Use a tape measure and mark where each screw will go. Tighten the bolts down secure to the 2x4 using nuts and washers. Grab one of your 3/4' plywood pieces and screw it into the top of the ramp, spacing your screws about a foot apart. Remove the coping and drill the 3/8" holes where you have just indicated.įeed a hook bolt into the holes you drilled and place the coping in the notch on the mini ramp, while lining up the bolts with the holes in the 2x4. Use the previously drilled holes to mark the coping. Once the 2x4 has been drilled, place the coping in the notch on the mini ramp. Drill a 3/8" hole in each marked location at a slight downward angle. Also mark two in the middle at 2'-4 apart. I describe the string and compass method fully here, but you might also want to check out the more general String and Compass Help. Mark the 2x4 about an 1 1/2" down from the top, 6" in from each end. However, for the material list to be accurate, you will need to follow the plans as listed below. As with all structures here on DIYskate, you can build this mini ramp any size you want. wide and 24'-0 from end to end (including each deck). To attach the coping to the mini ramp with bolts, you will need to drill holes in the 2x4 behind where the coping will sit. tall (from the ground to the top of the deck), 8ft. Mini Ramp Halfpipe Plans Step 1 - Cut the Sides Step 2 > Step 1 - Cut the Sides Materials Required 2 pieces 3/4' untreated plywood Pencil Jig Saw Ruler Draw the Transition: String and Compass I describe the string and compass method fully here, but you might also want to check out the more general String and Compass Help.
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