Badly made joints in bamboo work can be tilled in with a mixture of sawdust and hot glue made to the consistency of thin paste, all surplus filling- being cleaned off before it dries. Cracks in bamboo can also be tilled with shoemakers heelball. A lighted taper is applied to the heelball, and sufficient allowed to drop into the flaw. After it has set, mb with a clean cloth until the surface is perfectly level.