Investigation of the properties of thick photoresist films

A power tool includes a housing and a handle having two ends moveably mounted to the housing via respective mountings, at least one mounting comprising a passageway formed in one end of the handle and a rod attached at one end to the housing. The rod's shaft axially slides within the passageway, enabling the handle end to move relative to the housing. A cavity within the handle end adjacent the passageway receives the rod, which has a second end within the cavity. A flange mounted adjacent the rod's other end within the cavity, unable to pass through the passageway, moves within the cavity relative to the passageway as the handle's end moves relative to the housing. A biasing mechanism within the cavity, between an internal wall of the cavity and the second end of the rod, biases the flange towards the passageway, and the handle end away from the housing.