Slip on a pair of thick work gloves to protect your hands. Hold the bamboo pole in one hand and a piece of 110-grit sandpaper in the other.
Slide the sandpaper up and down the length of each bamboo pole. Continue sanding until the bamboo poles are free of rough edges.
Wipe the poles down with a microfiber cloth to remove residue left over from sanding. Perform a second light sanding using 220-grit sandpaper.
Run the 220-grit sandpaper over the bamboo poles just as you did before. The 220-grit sandpaper will give you a nice smooth finish for varnishing or painting.
Wipe the bamboo poles down a second time with the microfiber cloth to remove sanding residue. Varnish or paint as desired.