If you can find a friend with a convection oven (the table top kind) you can set the thermostat at 140 degrees and bake it for 3 or 4 hours. If you'll let it cool for the same amount of time still in the oven that ought to do it. You will probably have to use a candy thermometer to get the temp correct because 140 degress will still be in the "low" range prior to the inaccurate silk screen markings on the temp dial.
