to form a columnar or rod - like or bar - like material , a plurality of canes , for example of glass , plastic , or metal , are assembled in openings , for example in the form of circumferential grooves in a plurality of base bodies , spaced along the length of the columnar opening ; after assembly , a bonding or curing agent such as an epoxy is located between the canes , and in the grooves of the base bodies , and the assembly is then wrapped with a wrapping , of textile woven or mesh or braid material , which may include metal - mesh , the epoxy then curing and bonding the canes , spaced holding elements , bonding agent and web material into one unitary whole . branches can be formed by bending off selected ones of the canes , and any termination configuration is obtained by sliding the canes in the openings prior to curing of the bonding agent .