CELLINK^® PCL is a high-molecular weight (Mn 50,000) thermoplastic linear polyester derived from caprolactone monomer. This biodegradable polyester has a melting point of 60° C. PCL provides a reinforcing structure to load-bearing tissue constructs, including bone grafts and osteochondral plugs developed for in vitro and in vivo studies. It can also provide a temporary scaffold for overhanging structures.