Creating a coffee bean backsplash is a great way to bring an elegant and organic touch to a coffee bar or kitchen. You can also substitute the coffee beans for other items such as shells, antique buttons or any other small décor.
Next, rip the 1x4 poplar trim into 1 1/2" strips. Miter cut (2) at 72" and (2) at 14 3/4" and attach to the plywood backer with wood glue and 18ga finish nails.
If you want the backer to disappear behind the coffee beans, stain it a similar color. You could also choose a contrasting color to let it stand out.
In a warm dry place, level the assembled frame onto a table or saw horses. Be sure to check level in two directions so the epoxy settles evenly. Be sure to close all windows and heat vents to keep dust or bugs from getting into the epoxy. If possible, do this in a garage or unoccupied space to avoid the fumes.
Mix 16 oz of 60 coat bar top finish in a plastic mixing bucket. It is critical that it is mixed according to the instructions and evenly otherwise it will not harden.
Let the epoxy set up for several hours otherwise the beans will float to the top of the finishing layer of epoxy.
Once the base layer has started to harden, mix another 32 oz of epoxy and pour over the top. Spread the epoxy out for a glassy finish. Be sure to spread it before it starts setting.