... pine,Chestnut wood,poplar, beech,Acacia.4.Working pictureFeeding and outing system1,Laser, Infrared calibration2,Auxiliary Frame, adjustable ... speed control technology .Four arc chain automatic centering,three power system synchronous feeding on the whole course perfect ... performance Cooling systemBuilt out and in high efficiency cooling system, Protect the saw blade.Picture1 and Picture2 is built ...