Patent ID: 7501601

Claim:
A laser engraver comprising: a. a surface for supporting a workpiece; b. a rail assembly comprising: i. a first hard coated dual anodized rail disposed along one side of said surface; ii. a second hard coated dual anodized rail disposed along a second side of said surface from said first anodized rail, wherein said first and second anodized rails are oriented substantially parallel to one another; and iii. a third hard coated dual anodized rail, oriented substantially perpendicular to said first and second rails, slidably disposed on said first and second anodized rails using at least one non-recirculating polymer bearing; and c. a carriage, slidably disposed on said third anodized rail using at least one non-recirculating polymer bearing; d. a reflector removably mounted to said carriage; e. a lens removably mounted to said carriage; f. a laser having a beam, wherein said beam is aimed at said reflector, reflected through said lens and focused on said workpiece; g. a motorized drive assembly for moving said third rail along said first and second rails comprising: i. at least one pulley; ii. at least one drive belt disposed around said at least one pulley; iii. at least one servo motor connected to said at least one drive belt; and iv. at least one servo motor encoder for compensating for flex in said at least one drive belt; and h. a motorized drive assembly for moving said carriage along said third rail comprising: i. at least one pulley; ii. at least one drive belt disposed around said at least one pulley; iii. at least one servo motor connected to said at least one drive belt; and iv. at least one servo motor encoder for compensating for flex in said at least one drive belt.