This functional and aesthetically appealing bamboo planter is appropriate for those with ample supplies of large diameter bamboo. The example shown in the photo below was found at Finca Amrta in Costa Rica. It hangs under a roof, which is recommended to extend the life of the bamboo.
Fig 1. Bamboo propped up
Find a suitable piece of bamboo and prop it up.
Fig 2. Measuring from knot
Measure and mark for cutting. Mark an equal distance from each knot (1-2 inches in).
Fig 3. Measuring from center mark to create long sides
Use these marks to form a center line. Draw out an even oval based around the center line, this is what you will cut out.
Fig 4. Drill holes at the bottom for drainange
Flip the piece over and drill a few (2-3) holes for drainage. This is easier to do now before the main hole is cut from the top. Flip the piece back again and drill holes where you marked the ends of the center line. This provides a place for the hacksaw to enter.
Fig 5. Cut both rounded sides first
Cut the smile cuts out on each end.
Fig 6. Cut straight sides
Cut the straight sides.
Fig 7. Pry open
Fig 8. Hack smooth
Hack the sides smooth with a machete (or sandpaper depending on your style).