Rotary Shell Penta Box provides the widest range of beech shells in the market: the offer really includes all shells with diameter from 174 to 700 mm, with incredible possibilities of customizing respect the high, external semicircle length and surface. 1.The production of great rotary shells starts from the selection of best beech logs from east-European forests: the entire productive process from the log treatment to the final packaging is managed inside the company production plant. Thanks to the strict quality control on all processing phases Penta Box is able to deliver the ideal product for today work habits of die makers all over the world. 2.All the processing phases are projected to obtain 100% beech rotary shells with the best possible wood stability to respect tight dimension tolerances and minimize the placing time for the cutting phase 3.The temperature and humidity parameters during the curving process are strictly controlled for each range of shell diameter. The shells are trimmed with the customer specification with electronic controlled cutting system.