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2x4 Stud Saddle Marker Caddy
A four-cell bin that sits on the front edge of an exposed 2x4 stud in a garage or shed and holds pencils, markers, a utility knife and other small layout tools. The saddle opening is 39.5 mm wide, sized for the 38 mm (1.5 in) face of a standard 2x4. You fix it with #8 wood screws, either through two 5 mm side holes or one hole in the back wall. The bin is 80 x 46 x 70 mm, with a 76 x 18 mm rear slot and three front cells.
Saddle Square With Centreline Scribe Holes
A wrap-around saddle square that sits over a board's corner, so you can mark one continuous square line across the face and down the edge. It has a 60 mm face leg and a 40 mm edge leg, is 40 mm wide and 5 mm thick, and has a relieved inside corner so it seats over a rough or eased edge. The 2.4 mm scribe holes for an awl or a 2 mm lead holder do two jobs. Slide the square along the board with a point in a hole and it works as a line gauge at 10–50 mm in from the edge. The holes at 9.5 mm and 19 mm mark the centre of 3/4 in (19 mm) stock and 2x lumber (38 mm).
Cornhole Folding Leg Pivot Bracket
This bracket replaces the stamped-steel folding-leg hinge on a cornhole board, which tends to bend or rust. It screws to the inside of a 2x4 frame rail (89 mm tall) with four countersunk #8 wood screws through 4.6 mm holes. It has an 8.3 mm pivot bore for an M8 or 5/16 in carriage bolt, a raised 3 mm washer boss for the leg to turn on, and a gusseted stop wall. The stop face sits 45.5 mm from the pivot so a 3.5 in (89 mm) 2x4 leg stops square to the rail. The plate is 102 x 85 x 6 mm; print it in PETG or ASA for outdoor use.
2x4 Face-Centering Bolt Hole Drill Guide
A saddle jig for the 89 mm (3-1/2 in) face of a 2x4. Its 90 mm channel and two 16 mm fences centre it on the board automatically. Three 14 mm-long guide bores (6.6, 8.2 and 9.8 mm, for 1/4, 5/16 and 3/8 in bits) keep the drill square, so through-holes for carriage bolts and lag bolts land on the centreline. Sight notches at each end line the jig up on a pencil mark.
2x4 Firewood Rack Corner Bracket
This is an L-shaped corner gusset for a DIY firewood rack. It holds a vertical 2x4 upright square on a horizontal 2x4 base rail. Both arms are channels 90 mm wide on the inside, which fits real 38 x 89 mm (1.5 x 3.5 in) lumber. The 22 mm side flanges grip the edges of both boards. Ten 5.5 mm holes take #8/#10 pan-head wood screws or 5 mm lag screws. The part measures 158 x 158 x 25 mm, so it can stand in for the $10 steel brackets you would otherwise need eight or more of. Open windows let rain drain out.
Boat Trailer 2x4 Bunk End Cap
A cap that slides over the rear end of a carpeted 2x4 boat-trailer bunk, so the hull slides onto a smooth chamfered nose instead of catching on frayed carpet and the cut lumber end. The pocket is 100 x 49 x 36 mm. Crush ribs grip a 38 x 89 mm board wrapped in roughly 4–5.5 mm of carpet, and there are three drain slots so water doesn't sit against the wood. Fix it with #8 pan-head screws through four 4.6 mm side holes, none of which face the hull.
2x4 Open-Stud Straddle Cord Hook
A heavy hook for open-stud garage walls. A U-channel slides over the 38 mm (1.5 in) front edge of a 2x4 stud and holds with two #8 wood screws through the side legs, which have 4.8 mm clearance holes. A gusseted 70 mm arm with a 35 mm upturned lip then carries extension cords, air hoses or ropes without adding a backer board.
Flagged: mains electrical wiring. Not for safety-critical use without independent engineering review.
2x4 Fence Rail Post Bracket
A U-channel hanger that screws to a fence post and holds a 2x4 rail on edge (38.1 x 88.9 mm lumber, 40 mm channel to allow for swollen treated wood). It's for fixing a fence section when the rail end has rotted or the bracket ear has snapped off. The 90 x 60 mm back plate takes four #10 or M5 screws in 5.5 mm holes. The 50 mm cheeks take #8 or M4 screws in 4.5 mm holes into the rail sides, and two 8 mm drain holes keep water from sitting in the channel.
Knock-Down 2x4 Sawhorse Bracket
This sawhorse head holds a 2x4 top beam on edge (38 x 89 mm actual) in a 38.8 mm channel. Two 38.8 mm leg sockets splay 15° to each side for 2x4 legs. Each wall has 4.8 mm clearance holes for #8 wood screws, so you can build folding shop sawhorses from scrap lumber. The part is about 125 x 106 x 30 mm and is printed flat, so the beam load goes into the legs along the layers rather than across them. Use two per horse.
2x4 Lumber Rack Arm Socket
A wall bracket that turns a scrap 2x4 into a cantilever lumber-rack arm: the socket takes a nominal 2x4 end (38.1 x 88.9 mm actual) in a 39.2 mm channel, 71 mm deep, with 4.5 mm cheeks that pin the wood with two 5.5 mm cross screws per side. The 8 mm back plate takes four #10 or M5 screws into a stud on a 30 x 48 mm pattern, counterbored 3 mm so the heads clear the lumber. Overall 78 x 48 x 88 mm — print a pair per arm for conduit, moulding, pipe and offcut storage.
Raised Garden Bed Corner Post
A corner post for timber raised beds: two perpendicular 39.0 mm channels swallow the ends of any 2x lumber (2x4, 2x6, 2x8 — all 1.5 in / 38.1 mm thick) with 28 mm of engagement, and the open 39 mm centre shaft takes a 2x2 stake driven into the ground to anchor the corner. Five 4.5 mm holes take #8 / M4 screws — one through the outer and one through the inner wall of each channel so the boards are pinned both ways, plus one into the stake. 75 x 75 x 60 mm, constant cross-section so it prints flat with no supports; run it in PETG or ASA for UV life.