I picked up quite a bit of structural plywood (laminated timber) from a skip bin (dumpster). Instead of going to landfill, I decided to recycle it.

Step 1: The Wood

The dumped structural plywood is mainly off-cuts. I suspect it was used for making staircases, which is why there many triangles and other odd shapes. For this project I used one of the smaller pieces.

'Being structural plywood it's solid and has very few 'holes' you sometimes get in cheaper wood.

Step 2: Preparing the Wood for the Lathe

I marked a circle with a compass, and cut it with a drop saw close to the line to reduce the time spent at the lathe. A band saw may be better, but I don't have one.

Step 3: Truing and Making a Tenon

I mounted the plywood between centers on the lathe. Using a bowl gouge and a parting tool I smoothed the outside to circle, and created a tenon for mounting the blank in the chuck.

Step 4: Shaping

The bowl is chucked using the tenon. I shaped the outside and hollowed the bowl using a bowl gouge and a scraper.

Step 5: Sanding

Still mounted, I used sandpaper (gradual from 120 to 400 grit) to sand the inside and outside

Step 6: Shaping the Bottom

I reverse chucked the bowl using a jam chuck (made out of plywood of course) and using a parting tool I cleaned the bottom. The very last bit needs to sanded. The bottom is shaped with a ring on the outside and the inside is recessed a bit to ensure stability.