Easily convert any household lemon into an Aperture Sciences combustible lemon, courtesy of Cave Johnson's Engineers.If you have no idea what is going on, watch this: http://www.youtube.com/watch?v=NyLUU3O4zW8Printed on an early Fablicator. www.fablicator.comPrint both pieces, snap together.Cut a small piece off the top of a lemon.Use a 2.5" drywall screw to attach the detonator to the lemon on the newly created flat.Insert appropriately sized spring in the other hole (about 3/16" OD x .75" long, fairly weak)Bend a pin out of whatever ~1/16" OD metal is lying around (I used piano wire)Close handle, insert pin.Burn life's house down at your convenienceNote: The solidworks files for the handle and detonator are exported from the "lemon" multi-body part file. You should download all 3 files if you want to try and edit this.