Composite decking tool (Parametric)

thingiverse

I created this device to make installing composite decking boards easier. Similar to the tools sold by manufacturers of your boards, this device ensures accurate board-to-board spacing and screw placement. The free CAD file I provided can be used to adjust settings for different brands or needs. The uploaded STL file is specifically designed for affordable (<$2/bd ft) Veranda brand composite decking boards, commonly found at popular big-box stores like the orange one. Dimensions are based on recommended fastener schedules and spacing, with a 1.5" wide joist (3/16" spacing between boards, 2x screws 1" from edge of board, centered on the joist). To use this device: place it on top of the board you're installing, oriented with prongs facing down toward the joists. Now slide the device along the board until the prongs stop at the side of the joist you're screwing to. The circular notches on the joist now mark ideal locations for 2 screws. Start 2 screws in these locations (don't drive all the way yet). While pulling the board snug against the prong, finish driving the screws. Repeat until all boards are screwed down. The 3/16" prong spacers can be used in various situations besides 'field screws'. For example, they can serve as spacers for ripped boards (just "eyeball" screw locations in this case). Unless you're using nylon, you'll likely need to print extra tools to keep the work going when one breaks. To give an idea of their durability, I had a ~200sq ft decking job (~700 screws) that required 4 printed devices (ABS, 3-wall thickness) to complete. I arrived on day 1 with 2 tools and one broke halfway through the day. I printed 2 more and showed up with 3 the next day... went home with 2 good ones. So you may need about 1 tool per day if you're an average builder who is "not so careful" like me, more if you like to bang things around a lot as tempers flare, less if you're a very calm and gentle builder. Regardless of your temperament, if you plan on using this device daily, you should print it in nylon... then it will last forever... more or less. Anyway, cheers and happy building!