主权项 |
1. A heat brake comprising
a split work piece support table having two edges defining a slot between adjacent portions of said split work piece support table, a first plenum below said split work piece support table, a first blower for creating a negative pressure within said first plenum, a second plenum below said split work piece support table and below said first plenum, a second blower for creating a positive pressure within said second plenum, at least one nozzle operable to conduct air from said second plenum through said first plenum towards said slot, and a heater between said second blower and said at least one nozzle, wherein said first plenum is in communication with said slot, wherein said first blower is operable to cause air to flow through said slot and into said first plenum, and wherein said second blower is operable to cause air to flow into said second plenum and out of said second plenum and through said at least one nozzle. |