List of Mechanical Engineering Software for free use: http://www.box.net/mechdesign Allowances&TolerancesInch_Metric_ISO.xls,Bearing.xls,BrakeDesign.xls,CamsAndCamDesign.xls, CoilSpring.xls,DesignOfPipe.xls,DieAndPunch.xls,FlyWheel.xls,GearForce.xls, MetalFitsAndTol.xls,MultiLeafSpring.xls,NutAndBoltSelection.xls,ProgramList.xls, Shafting.xls,SpurGear.xls,Vbelt.xls,WeightsAndMeasure.xls,WireRopeDrum.xls Inroduction : http://www.google.com/profiles/graphcomnsk