Build a potting bench
Build a compact outdoor workbench with a slatted top, lower shelf and braced frame.
Lawn & garden · 1 day + finish · Medium
Before you start
Support and clamp all cuts; wear eye, hearing and dust protection. Use exterior-compatible screws and lumber, and keep treated-wood dust contained if using treated stock. Set the finished bench on a firm level surface and never stand or sit on it.
Tools and materials
- Cut list: four 2×4 legs at 35¼ in; four 2×4 long rails at 45 in; six 2×4 end/center rails at 18½ in; four 1×6 top slats at 48 in; two 1×6 shelf slats and one 1×4 shelf slat at 45 in; two 1×3 diagonal braces cut to fit
- Exterior wood glue, 2½-in exterior wood screws for frame and legs, 1⅝-in screws for slats/braces, exterior finish; tape, square, level, clamps, saw, drill/driver, sander and protective equipment
Check the problem
Check the footprint and working height
Allow room to stand and move pots without blocking a path. This bench has a 48 by 22¾-inch top and a 36-inch working height when using ¾-inch top boards.
Confirm actual stock sizes
The cut list assumes 2×4 stock is 1½ by 3½ inches and 1×6 stock is ¾ by 5½ inches. Reject split or badly twisted pieces. Use rot-resistant or suitably treated exterior wood.
Steps
Cut and prepare the parts
Cut the listed frame, leg and slat pieces, allowing saw kerfs in your lumber purchase. Smooth edges and predrill near board ends. Mark one face of each rail so the frame parts stay consistent.
Assemble two rectangular frames
Set rails on their 3½-inch edges. Fit two 18½-inch end rails between two 45-inch long rails, producing a 45 by 21½-inch frame. Glue and use two 2½-inch screws through each long rail into each end. Add a third 18½-inch rail centered between the ends. Repeat.
Fasten the four legs
Fit legs inside the corners with their 3½-inch faces against the long rails. Set the upper frame flush with the leg tops and the lower frame’s top 8 inches above the feet. Clamp square, then use two staggered 2½-inch screws through each adjoining rail into each leg; avoid screw collisions.
Brace against sideways movement
Stand the frame on a flat surface and check diagonals. Fit a 1×3 diagonal across the outside of the back legs and another across one side. Mark angles in place, cut and fasten each end to a leg with two 1⅝-inch screws. The empty frame should resist racking.
Attach the worktop
Lay four 48-inch 1×6 boards across the 45-inch frame with 1½-inch end overhangs and ¼-inch gaps. Center the resulting 22¾-inch depth over the frame. Predrill and fasten each board to both end rails and the center rail with 1⅝-inch screws.
Fit the lower shelf
Lay two 45-inch 1×6 boards and one 45-inch 1×4 board across the lower end and center supports. Their combined 14½-inch width plus two ¼-inch gaps fits between the front and rear legs; center them in that clear depth. Predrill and fasten to every support with 1⅝-inch screws, checking for protruding tips.
Finish and verify stability
Ease sharp corners, seal exposed end grain and apply an exterior finish as directed. After drying, place on a firm level surface, check rocking and tighten joints. Add a few light pots first and stop if a joint moves or the bench racks.
Ease sharp corners, seal exposed end grain and apply an exterior finish as directed. After drying, place on a firm level surface, check rocking and tighten joints. Add a few light pots first and stop if a joint moves or the bench racks.
Tips
Dry-fit before glue
A diagonal check catches an out-of-square frame early.
Keep the top gaps
Water and spilled soil need somewhere to go.
Store heavy bags low
Keep the upper surface clear and do not overload a freestanding garden bench.