Bressy

@Re-Brass I have the same extruder settings as in your pictures, ie offset X/Y = 0 for both extruders. We need to be careful that we are talking about the same machine I understand the following: BRESSER T-REX WLAN = Flashforge Creator Pro Having a single head dual extruder and a Print Volume of 227*148*150mm BRESSER T-REX² = Flashforge Creator Pro 2 Having 2 separate heads (IDEX), and a Print Volume of 200*148*150mm Mine is the BRESSER T-REX²

Can you share your details how to make the dual colour printing working? Are you using multiple printer profiles? I can print with either extruder, in single extruder mode, but when printing in dual colour the extruders try to "home" in the same corner and collide. How do you set it up such that the left extruder will "home" in its left home position and the right extruder in the right home position?

@Re-Brass I have the same Bresser T-Rex2, ie the Flashforge Creator Pro 2. But seems the firmware has been tweaked by Bresser as the Flashprint software will not connect via the serial port. In the screenshot with your Start G-code you have: M132XYZAB which should be: M132 X Y Z A B At the End G-Code the G28 XY Should be: G28 X Y I would also go for the safer X (width) of 200mm