Anycubic I3 Mega - hacking the gantry frame and carriage of hot end

thingiverse

This is a hack for the gantry frame such that the printer carriage will be risen for 28mm (say 25mm in my hack). After the hacking, the X-axis carriage of printer head and 2 end stops for Y-axis dual step motors will also be relocated (i.e. move down around 10mm by drilling two holes) to adopt the change for home (SET ZERO) by adjusting the vertical compensation screws. First of all, tie bar of the gantry at the bottom of printer will be removed. Second, gantry was shifted upward by removing 2x2 screws on RHS and LHS. Only top 2 screws on both sides were tightened and re-fixed to the control unit with LCD touch screen, Y-axis motor and hot bed. Third, cable of hot end and fans were relocated from front to rear of the X-axis rails with a simple U-shaped mounting such that more headroom for the printing at 205mm plus 28mm. Fourth, a remix (https://www.thingiverse.com/make:462683) was attached to the U-shaped mounting to provide a simple solution for the cables at the back. Coming............need helps or suitable remix Firmware shall be changed with the use of Marlin. The original printable size of Anycubic 3 Mega will be changed from 210x210x205 to 210x210x233 (i.e. Z_Max_Pos was changed from 206mm to 250mm in my configuation.h such that 13.6% increase in printable height for free). Fans will also be shifting backward to allow space for LED light in front. Further upgrade is once again possible by rising the gantry by 45mm by refixing the mounting screws between the frame from mounting frame of Y-axis stepper motors.`