Full Print Volume Volcano Modification

prusaprinters

<p>This modification is to enable the full print volume of the Prusa i3 MK2.5,MK3, MK2.5S and MK3S when fitted with a Volcano heater block and nozzle without any firmware changes. Included in the modification are adjusters that fit between the trapezoidal nuts and x-ends for standard V6 block use without having to remove the mod.</p> <p>This is the V3 version of my mod and it's second release. With this version compatibility with MK3S and MK2.5S have been added. The Z-Motor mounts have been updated inline with the Prusa R3 versions and cable management has been improved.</p> <p>If you have already fitted a previous version of this mod and are upgrading from the MK2.5/MK3 to the MK2.5S/MK3S version I suggest you do not bother changing the Z-motor mounts.<br/> If you have already fitted this mod and it is currently working for you and you are not upgrading to the MK2.5S/MK3S I suggest you stay on your current version unless you are having to do a major printer rebuild for other reasons.</p> <h3>Print instructions</h3><p>Printer: Prusa i3 MK2.5, MK3, MK2.5S, MK3S</p> <p>Rafts:<br/> No</p> <p>Supports:<br/> No</p> <p>Resolution:<br/> 0.4mm nozzle 0.2mm layer height</p> <p>Infill:<br/> 20% Gyroid</p> <p>Filament: Any PETG Any<br/> Notes:<br/> If you are upgrading to the MK2.5S/MK3S the filament sensor lever is best printed using the Prusa supplied black PETG Prusament. I tried using black Rigid Ink PETG and it did not trigger the sensor.</p> <p>Rough Assembly instructions</p> <p>Insert the nuts into the X-carriage and lower bearing cover.<br/> Insert the nuts into the extruder body<br/> Fit filament sensor cable to X-carriage<br/> Fit Pinda probe to the extruder body<br/> Fit extruder motor to motor-plate for MK2.5S and MK3S<br/> Fit the appropriate print fan adaptor / nozzle mount to the extruder cover<br/> Fit the print nozzle to the extruder cover<br/> Fit the print fan to the extruder cover<br/> Temporarily fit the lower bearing cover to the X-Carriage.<br/> MK2.5S/MK3S Temporarily fix the extruder cover and motor plate to the extruder body<br/> MK2.5/MK3 Temporarily fix the extruder cover and motor to the extruder body using the right side screw only as the left side is currently inaccessible.<br/> Now fix the extruder body to the X-Carriage taking care to route the cables so that they are not trapped and that the extruder motor and print fan leads have a bit of slack.<br/> Thread the leads through the hole in the cable holder.<br/> Temporarily fix the cable holder to the lower bearing cover.<br/> You can now unfix the temporary mounting motor plate and extruder cover.<br/> Now fix the extruder body left side mounting screw to the X-Carriage.<br/> For the MK2.5S and MK3S fit the FS leaver printer adaptor magnets and bearing to the extruder body.<br/> If you have not already fit the bondtech gear to the extruder motor shaft.<br/> Place the hot-end assembly (heatsink, PTFE, heat break, heater block and nozzle) in the extruder body with the cables from it pointing towards the back.<br/> The extruder cover and for the MK2.5S/MK3S the motor-plate can now be fixed to the extruder body.<br/> Complete the appropriate steps to finish the extruder assembly.<br/> Unfasten the cable holder from the lower bearing cover and remove the lower bearing cover.<br/> The assembled extruder with X-Carriage can now be fitted to the printer.<br/> Fix the upper and lower bearing covers to the X-carriage holding it to the printer.<br/> Fixt the cable holder to the lower bearing cover.<br/> Fit and tension the X-Axis belt.<br/> Fix the belt cover.<br/> Fit the 500mm nylon filament to the cable holder.<br/> Wrap the cable bundle.<br/> Fit the cable clamp to cable holder using Zip-Ties making sure not to crush any of the wires.<br/> The E-Axis assembly is now complete. For final wiring and testing consult the Prusa assembly instructions.<br/> Regards,<br/> Martin</p>