If you are new here, you can read about my patio makeover here and about the outdoor sectional sofa.
How to make a DIY ottoman for a modular sofa
Step 1 - cut and assemble the sides
In this step, we need to make two identical sides for the ottoman.
Instructions for one side are below:
Cut two 2x4"s at 12", one at 21" and one at 24".
Attach them together using pocket holes. Use wood glue and make sure that it's square during assembly.
Step 2 - connect the sides
Cut two 2x4"s at 27 ½" and attach them to sides with Kreg jig pocket holes. As always, use wood glue to attach them together.
Step 3 - Add brackets for slats
Cut two 2x2"s at 21" and attach them to sides with wood glue and screws.
Step 4 - add slats
Lay down slats and attach them with screws. I used 2x3"s for the slats and covered the whole ottoman but you can leave spacing the same as on the one-armed sofa and corner unit. Up to you.
To see dimensions, cut list, and lumber list you can download a printable PDF plan from my shop.