Kodama Trinus E3D v6 mod v1

thingiverse

There is no need to talk about the E3D v6, it is a state of the art reference hot end, you won´t get a better one. What is the use of the mod, what are the differences compared to the trinus hot end: Even the E3D v6 has a PTFE inliner, it is a full metal hot end and at the time being only the trinus firmware limits its max temperature. No PTFE degradation, no changing extrusion problems over time No unstable extrusion/retraction problems, printing speed is only limited by trinus resonance problems and not by the hot/cold end extrusion capacity, I print PETG infill at 230 °C 0.2mm and 80-100 mm/s, before the mod I struggled to achieve 20 mm/s without problems, 80-100 mm/s will only make sense for some prints on such a small build volume, but it makes a huge difference if you print at e.g. 60-80 mm/s in average than compared to part "trinus_40mm_cold_end_fan_mount_E3D" ###################################################################### Maintenance position: In order ot change nozzles and so on, the fan duct can be easily rotated by 180 ° to give free access to the nozzle/hetaer block, see very last right picture above. ###################################################################### 3D printed Parts: all parts can be printed without supports, i used 3 outlines and 15 % infill, works with 0.4 and 0.5 mm nozzle and various filaments "Filament_guide_extruder" Optional, in principle stiff filaments work also without, but there is no disadvantage to use it can be printed in every filament i would prefer 0.1 mm layer height, but it works also with e.g. 0.2 "E3D_extruder_fan_mounting_plate" PLA might not work, or only for low print temperatures (200°C), at least PETG, BDP, ABS, ASA or filaments with high heat resistance 0.1 -0.2 mm layer height If you use PLA increase number of outer lines to 4/5 and solid top/bottom layers to e.g. 5* 0.2 mm Infill about >=15%, according to number of top layers and material "E3D_bracket" Use filament with at least same heat resistance as 3 0.1 -0.2 mm layer height It is the only part which could be printed using supports, I don´t use supports, this gives some unwanted bridges on the horizontal overhang, which can be removed easily afterward, so no supports needed fan ducts Use a filament with the highest possible heat resistance, PLA might work for a certain time, I use extrudr BDP which survives about 115 °C without problems like all other circular fan ducts, if the nozzle is close to the bed, the air gets redirected towards the nozzle/heater block, this can lead to -> Additional cooling load for the cold end (increased risk of jamming), therefore block hot air flow by air shield or mount bigger cold end fan, or increase PSU-Voltage -> Temperature increase for the base plate (PLA might get problems), therefore block air flow by air shield or mount bigger cold end fan, or increase PSU-Voltage -> Temperature drops when operating at high temperatures close to the bed, therefore block air flow by air shield already before the nozzle, use cotton insulation of the nozzle To prevent this, I tested different fan duct designs and ended with the 2 following "fan_duct_cold_filaments" (PLA) , a fan duct for low-temperature filament, hot air redirection isn´t that big problem because of the lower temperature, can be used with or without hot air shield "fan_duct_hot_filaments" for higher temp filaments with included air shield, prevents air going upwards towards the heater block and above, material is very close to the nozzle/heater block, so it will get shiny, but that doesn´t matter, this design gives less maximum air flow than the other, but in general high temp filaments need less air flow. the fan duct design was optimized for evenness of airflow from all directions, design verified with CFD simulation, the target was not to maximize air flow, because this also can disturb the print, it should direct the cold air exactly where it is needed, therefore much less airflow is needed compared to not circular fan ducts trinus 40mm cold end fan The E3D should come with a 30 mm cold end fan, which is fine, but the 40 mm trinus fan will provide even better cooling, if you want to use the triuns fan print the part "trinus_40mm_cold_end_fan_mount_E3D". Another advantage of the trinus fan is, that the electric connectors will fit for sure. hot air shield (not 3Dprinted) Optional, depending on your needs, if you notice temperature drops when close to the bed, or too high cold end temperatures you should block the air moving upwards The hot air shield can easily be made of insulation cotton or recycled cardboard or metal, if you are more ambitious. All you need to do is to put e.g. a piece of cardboard between the E3D heat block and the E3D cold on cooling block. If the air cannot move upward, it is not influencing the cold end or heater block anymore. Used with lower temp fan duct, to prevent air getting towards the heater block/cold end ####################################################################### Pictures from left to right mod in real life with 40 mm cold end fan mounted mod in real life with 40 mm cold end fan mounted mod in real life with 40 mm cold end fan mounted Overview, 40mm fan, extruder/alu block and filament guide not shown mounting plate for E3D, 5015 hot end fan and fan duct and extruder alu-block fan duct for higher temperature filaments (> 200 -220 °C) fan duct for lower temperature filaments mounting bracket for E3D filament guide for extruder alu-block trinus 40 mm cold end fan mount, instead of standard 30 mm E3D fan Overview, 40 mm fan, extruder/alu block and filament guide not shown, fan rotated to maintenance position ####################################################################### Outlook and improvement potential Optimize hot air management further Improve sight to 1st layer --> modify fan duct further Move nozzle a few mm up, this needs to change the fan design Maybe reduce weight further by exchanging the extruder block with 3D printed parts If some wants add a casing ####################################################################### If one needs some small mods of the mod, i could probably change it. Print Settings Rafts: No Supports: No Resolution: 0.1 - 0.2 mm Infill: 15 %