We do not bend wood together to laminated it, however, this is possible if you have a the right jig to bend the wood and laminate it together. We have only had a bokken de-laminate twice. One was due extreme temperature changes and the other was Genuine Lignum Vitae. Genuine Lignum is not able to be laminated due to the amount of oils and resins in the wood. You want to take care of you laminated bokken and try to keep it at normal temperatures.