The gantry needs to carry the z-axis, router, and the y-axis with all support pieces. The linear slide bearings are longer than the other linear slide bearings on the y and z axes so the weight of the gantry can be supported. The gantry sides consists of two boards approximately 18' x 8' 8' linear slide bearings will also be built in a later video to be used in with these gantry sides. The gantry allows the router to essentially float over the cutting surface. That's what makes this machine a gantry style machine. The gantry is the part of the CNC Router that moves along the x-axis. We will be making the gantry sides in this video. This tutorial is dated, if you are considering a CNC for your personal use, we would highly recommend purchasing a kit that is very stable from our wide range of machines available. Now read on and enjoy the simple and effective technique. Y is omitted from this since you want y to remain at 0. Carry on to the next position of 2' from the x origin by typing: g0 x2. Depending on your z-axis zero position, say the top of the workpiece is at 0, you would use the g-code: g1 z-0.5 and them immediately g0 z.5 which brings up the bit 1/2' above the work piece.

You would then want to move the bit downward to create the hole. You would type the g-code: g0 x0 y0 - this g-code moves the bit to the (0,0) position on an x,y coordinate system. He specifies, assuming that you have zeroed out the correct position of the origin, that you move to x0 y0. When he talks about the moving to various positions, he is making reference to g-code. The historic reference is icing on the cake. I get many emails asking, 'how do you clamp your workpiece.' I would often reply with the screw and wood scrap idea, but when I saw the method below, I knew this was the one to seriously consider. He has come up with a brilliant clamping idea. CNC Machine Horizontal Work Piece Clamping This technique comes from one of the users of this site (Robert L).

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