Special Features The DDG V2 comes with special features of its own: Space for housing the UM filament sensor inside; Symetrical design to be reversible (standard can be re-assembled as mirrored and vice-versa); Filament tension set with a 2mm hex key; Pre-tension scale; Hardened Steel Drive Gears Like all other Bondtech Extruders, the DDG V2 features Nickel Coated hardened Steel Drive Gears to feed standard and abrasive materials with confidence and without wear. Recycling the stepper motors The original stepper motor of the printer will be reused and the extruder will be mounted at the same position and in the same mounting holes as the factory extruder making the installation easy and take less than 10 minutes. 2.85mm filament only This upgrade kit is compatible with 2.85mm filament only. Firmware Update No firmware update is necessary. Hardware Changes Required No additional hardware changes are required on the UM S3, S5 and S7. For the UM2 and UM3 it is necessary to use the UM DDG Converter Cable to reverse the feeding direction. What Version May You Need Depending on the UltiMaker model you are upgrading, different versions may be necessary. Check the list below: For UM2 : use 1x Standard plus the UM DDG Converter Cable For UM3 : use 1x Standard and 1x mirrored plus the UM DDG Converter Cable For UM S3 : use 1x Standard and 1x mirrored For UM S5 : use 1x Standard and 1x mirrored For UM S7 : use 1x Standard and 1x mirrored
