An automated tool includes a quick change spindle assembly. Each of the dispensing tables 6 and 6 so divided has a partition wall 33 secured to a cut edge 6a, which is left along the line of division, so as to extend upright. The stochastic surface is incorporated into the outer surface of the film roller by peening. The method can further comprise removing unfused powder from the ducts and introducing cooling media into the ducts. The transaction processing system comprises a coordinator operable to receive a commit or abort request from a transaction and to perform a two-phase commit protocol on behalf of the transaction and a recovery presumption mechanism operable to perform a recovery process on the transaction upon recovery of the transaction processing system from a failure.