CONESTOGA WORKS TECHNICAL INFORMATION The following fact sheets are available for downloading in PDF format. The inventor of Nothing, Otto von Guericke. Instructions for use of the Conestoga Works vacuum chamber for stabilizing and dyeing wood. Instructions for use of the Conestoga Works vacuum kiln to dry wood. Maximum theoretical vacuum calculator for any elevation. Conversion table for common vacuum units. Cross reference of vacuum levels and the boiling temperature of water. How vacuum pumps work. Basics of vacuum Calculating the lifting force of suction cups. Methacrylate Esters Safe Handling Manual.