TEMPERATURE_WAIT SENSOR=extruder MINIMUM={extruder_temp} G1 X230 Y30 F600 ; prime start position G1 Z0. 5 ; purge line M117 PrintingExtrude below minimum temp 4:37 AM Extrude below minimum temp See the 'min_extrude_temp' config option for details 4:37 AM Extrude below minimum temp 4:37 AM Extrude below minimum temp See the 'min_extrude_temp' config option for details. This filament, at the manufacturer's recommendation, should be printed at a temperature between 107 and 150 Celsius. This G-code will allow you to probe cold, but will also prevent you from probing with a nozzle at printing temperature (to try to preserve your build surface). M140 S {material_bed_temperature_layer_0} ; heat bed, nonblocking M104 S {material_print_temperature_layer_0} ; heat hotend in parallel ; START_PRINT BED_TEMP= {material_bed_temperature_layer_0} EXTRUDER_TEMP. 100 seconds. # Reset extruder: G92 E0 # Set extruder temperature: M117 Waiting on nozzle: M104 S{extruder_temp} # Move Z axis up a little to prevent scratching heat bed: G1 Z2. CHAMBER|default(0)|int %} G28 # <insert your routines here> M190 S{bedtemp} ; set & wait for bed temp TEMPERATURE_WAIT. A 2. 0 Z0. extrusion speed: 49,25cm/min. My min temp is 0 degrees on the extruder so idk what is happening here. 0 Z0. The figure below shows the essential components of a blown film line, including:. Replace The Thermistor. delta/config. Hazrd. extrude below minimum temp I'm new to klipper and have followed the instructions here for the sv06plus. If it the target or current temp is higher than the specified max (default from the code is 150), it drops the temp to the max before allowing probing. [error] 2023-03-06 22:03:08,091 [root] [klippy:_connect:167] choice 'command mot0_step_pin = pf13, mot0_dir_pin = pf12, mot0_enable_pin = pf14, mot0_uart_pin = pc4. 5 KB) moonraker. 38. EXTRUDE_MINTEMP and M302 questions. If the temperature does not increase then verify the "heater_pin" setting in the. BED|int %} {% set hotendtemp = params. Firmware: Klipper. The firmware will continue to try to reach and hold the temperature in the background. Literally copy/pasted all of your stuff. becuase it is below minimum temp. 0 / buster / fulling patched Valid / working config pre update, re-producable forward and back revving. This remains in effect until the printer is shut off. . 0 # Wait for Extruder temperature: M109 S{extruder_temp} M117 Purging # Move to start for purge line: G1 X0. I don't see why the printer would home at 21 degrees or what else should PrusaSlicer do. Upload the GCode to the printer from step 2. The HEAT_SOAK macro just has the toolhead sit in the middle above the bed blasting the fan to heat up the chamber with the radiating heat from the bed. If the surface temperatures become too different from the optimal values,The extruder temperature in the graph should start to increase (within about 30 seconds or so). Please troubleshoot a little and put that in the question! $\endgroup$ wilriker @enix 18 Jun 2018, 11:44. By default (see below), the algorithm considers edges belonging to two or more selected faces as. 0; z offset reset M140 S{BED_TEMP}; set bed temperature G90; absolute coordinates. La pressione nella camera del magma sotto terra fece espellere gas tossici. 2251. 5 KB) moonraker. My guess is the following: your gcode sets the target bed temperature and waits for it to be reached using M190; after the bed temperature is reached, your gcode sets the target extruder temperature using M104; The printer homes im experiencing a extrude below min temp error without a reason. . 5 KB) moonraker. In my start gcode above, we are setting BED_TEMP and EXTRUDER_TEMP using what are called "placeholders" that represent the values set in Cura. See the 'min_extrude_temp' config option for details Config Reference. Extrude below minimum temp 2020-08-25 19:56:00,661 - Recv: // Extrude below minimum temp 2020-08-25 19:56:00,671 - Recv: // See the 'min_extrude_temp' config option for details;My start Gcode start M530 S1 ;Start printing M140 S[first_layer_bed_temperature] ;set bed temp M104 S150 ;set initial extruder temp M190 S[first_layer_bed_temperature] ;wait for bed temp M109 S[first_layer_temperature] ;wait for extruder temp G92 E0 ;reset extruder G28 ;home all axes M420 S1 ;Enable last. Expect these buttons to brighten up when extruder is above min_extrude_temp. Only. Calibrate Your Stepper Motors. M302 - Allow cold extrude, or set minimum extrude temperature M302: Allow cold extrudes. I'm pretty sure. . Even changed the main board to about her e3v3 board. . Plate out on upper (polishing) chill roll Top chill roll temperature too cold Raise chill roll temperature in small increments, clean roll and monitor. I'm not sure what (if any) checks klipper has for moving it at. The revo was wired in using locking jst connectors, so my first thought was that maybe a loose crimp caused the thermistor or heater to disconnect. Mainsail is showing negative temps for both the hot bed and the extruder. cfg) The following configuration elements are required and must be configured for Mainsail to function properly. github","contentType":"directory"},{"name":"optional","path":"optional. Extrude below minimum temp error. which means 30 RPM minimum so that residence time is not too excessive. And the big one is I put my min extrude temp to 0 degrees, just know that then you have no safety to stop the extruder from trying to push plastic on an un heated hotend. before doing any extrudes you should wait for your hotend to reach the target temperature. Convert whatever the result is to a decimal number. 8. Run a print, and observe the flow. Hi, all of a sudden I'm getting "extrude below minimum temp" right after homing and bed mesh. 2. With PRINTJOB_TIMER_AUTOSTART this command will stop the print job timer if the temperature is set at or below half of EXTRUDE_MINTEMP. 23. The average residence time in the extruder was around 4. If the extruder has not reached the range of TEMP then WAIT until then. 5 °C, or 120 °C, depending on the extrusion temperature (the maximum temperature of the process), which was set in the fourth zone, either at 110 °C, 135 °C. Feb 9, 2023. looked at my cura and I forgot to remove the temp tower fantower. extruder]. Pre-heat to PLA (215/60) and move the extruder or bed by hand, all the way to the end of each side. Posted July 23, 2020 · Activating the M302 G code. 0 / buster / fulling patched Valid / working config pre update, re-producable forward and back revving. If you are using a hot end with a higher temperature, it is better to lower the temperature by around 5°C than before. Posted by u/KillerQ97 - No votes and no comments{"payload":{"allShortcutsEnabled":false,"fileTree":{"firmware/Klipper":{"items":[{"name":"Connect RPI uart. Check the [extruder] section in printer. second best - cut the connectors, solder and heatshrink the wires. The other way around, dropping temperatures, only goes so far, too – when your filament is “less molten”, the extruder and hotend are going to have a harder time pushing it and laying down filament in the exact spots you want, which often results in underextrusion or even extruder skips. . The hotter the pla the more liquid it becomes (within reason) I personally set my extruder temp at 200 to 220, some filaments seem to flow better at the higher temperature. log (31. M302 needs a parameter or two. The extruder temperature in the graph should start to increase (within about 30 seconds or so). $\endgroup$ Stock hotend with a bontech extruder on an Ender 6. 5 KB) moonraker. Know that printers are usually protected against extrusion at low temperatures (usually 170 °C), so you are either extruding at a too low temperature or there is something broken in the electric circuit. Cold extrusion prevention was the first thing that came to mind. (transitive) to chop up or pulverize (an item of food) and re-form it to look like a whole. 1 Y20 Z0. Pro2 won't extrude below 220C. Unfortunately, I am much too new in klipper to even understand how to correct/circumvent this issue. Usage M302 [ S ] Parameters. Is there a way to lower the min temp for extrusion? I have some SOFT filament that extrudes well between 145-150°C but the firmware doesn't allow extrusion at those temps. 1987. Hotend PID tuning in Klipper. becuase it is below minimum temp. Ender 3 S1 Retraction Settings. Seems as if most of the macro isn't running at all? This is my first foray into klipper. For PETG it will wait for a few more seconds. 5. My printer is randomly stopping printing with the. If you are a firmware modding kind of person, then you can change this to whatever number your like and reload the firmware. becuase it is below minimum temp. This tells the printer to allow movement of the extruder motor above a certain temperature, or if disabled, to allow extruder movement when the hotend is below a safe printing temperature. it is the same filament profile used for all 5 slots in the MMU. If the temperature does not increase then verify the "heater_pin" setting in the. # Configuration reference - Klipper documentation. 8. Posted July 23, 2020 · Activating the M302 G code. 100 seconds. Fails after commit cc63fd, Mon O. Continue until all parts have been added and positioned. When I turn the temperature up to 185 (The default preheat temp for PLA) it allows me to extrude the wax but not at 145. Is there any way I can force it to continue and manually set the temp?When configuring the klipper firmware to run on the BTT SKR SE BX board, there are a couple things to know about. 2. Print settings: PETG from Extruder. 11:10 Extruder not hot enough 11:10 Extrude below minimum temp 11:10 Extrude below minimum temp See the 'min_extrude_temp' config option for details 08:55 Unknown command:"T0" 08:54 Bed Mesh state has been saved to profile [default] for the current session. 方法1：修改切片配置，避免温度先到打印温度然后下降进行打印前动作. When specifying a gear_ratio it is preferable to specify the actual gears on the mechanism (eg, prefer gear_ratio: 80:20 over gear_ratio: 4:1 ). Minimum extruder temperature MIN_EXTRUDER_TEMP [°C] Ignores extruder moves, if extruder is cooler then this value. Only thing i can see in the logs is that the temp is slowy declining to below 170 and then stops. Help me out please. Turn on the part cooling fans to 100% (can be done with M106 S255 command)Hey i got my printer like 2 months ago and just can't gat it right, its like one step forward two steps back. print a bed leveling model with a skirt with 5-10 lines width. net> pull/3/head. Minimum extruder temperature UI_SET_MIN_EXTRUDER_TEMP [°C]. Disable the runout sensor it by commenting out the [filament_switch_sensor] section in printer. The PID algorithm and the log get the raw values. Go back to Klipper and do Pressure Advance. Open printer. . If the temperature does not increase then verify the "heater_pin" setting in the. github","path":". This ensures that the print sticks well to the build plate and increases the success rate. For calibrating the hotend, I recommend following the steps below: Home the printer and adjust the nozzle position to sit in the middle of the bed, with about 5cm of clearance to the bed. Any already defined g-code for this will really help me a lot. That operation would be coded into the firmware not prusa slicer. Thanks! I've been printing a few things over the past 2 days, then it randomly showed this message earlier. 2. After several minutes the temperature should start to return to its initial room temperature value. The gcode desires a temperature of 240°C. coolkid1717. becomes 17 deg. 213 #pid_ki = 1. 3. Pro2 won't extrude below 220C. First layer usually 5°C-10°C higher than subsequent layers. V0. on Oct 1, 2018 Trying to extrude while cold, in order to calibrate extruder. klippy. #13 Mike Kelly, Feb 24, 2015. Cold extrusion prevention was the first thing that came to mind. S220 is the temperature that we would want the tuning to be. 215°C - 235°C. If the buffer has only Minimum time per move when cache is below or less segments, each segment is slowed down if would be shorter otherwise. I will post the kipper temp graph in a response below as its almost like the printer cuts off all heating. For a normal temp tower the change needed is tied to height of the model you are using. No branches or pull requests. log (31. i now this is not the reasen of the slowy droping of. Sep 6, 2020 · When changing the nozzle, for example, klipper will notice the sudden drop in temperature on the extruder (due to me touching it with a tool, the temp drops). Twin-screw extruders have two intermeshing screws and operate in the same manner as a single screw extruder. It just moves around the build plate without actually extruding anything. Here are the steps to calibrating a 3D Printer: Ensure everything on the printer is tight. Then go to the extruder temperature drop-down box and select "Off". Low the Temperature of Your Printer. I dropped the min_temp on both to -100 for diagnostic purposes in config. 5-in. extrude ⇒ vi. Saved searches Use saved searches to filter your results more quicklyClone via HTTPS Clone with Git or checkout with SVN using the repository’s web address. homed_axes: The current cartesian axes considered to be in a "homed" state. The default is 0. After several minutes the temperature should start to return to its initial room temperature value. 18:16:10 // {“code”:“key111”, “msg”: “Extrude below minimum temp // See the ‘min_extrude_temp’ config option for details”, “values”: }” An idea? Problem solved. github","contentType":"directory"},{"name":"optional","path":"optional. It is not a goal to support every possible G-Code command. but my concern is that the extruder stepper might refuse to move even though it no longer complains about min_temp. If the temperature does not increase then verify the "heater_pin" setting in the. CURA SIDE: I did slicing by putting all the temperatures at zero but when the printing starts then Klipper blocks it with the obvious error: // Extrude below minimum temp // See the 'min_extrude_temp' config option for details!! Extrude below minimum temp. So the only way to change this is by disabling cold-extrusion-prevention using M302 P1. The default is 170 Celsius. log. So the only way to change this is by disabling cold-extrusion-prevention using M302 P1. M303 E0 S220 C16 So what does this mean? M303 is the command for PID tuning. 12 mm Filling / Infill: 20% Printing temperature: 200°C Print bed temperature: 60 °C Print Speed: 60mm/s Indentation: 6 mm at 40 mm/s First Layer. So this just happened: an 8 hour print failed at the final seconds and the console gave out: extrude below minimum temp. 0 KB) I have an Ender6 with klipper direct extruder, lately it throws min_extruder_temp(midway or almost end print). Seeing this came up in a previous discussion/thread, I thought I would share what I found and have been using to heat soak the chamber on my Voron 2. Set hotend temp value and actual physical temperature at nozzle location can differ a lot. #6. zip Thanks & regards - bruce Trying to extrude while cold, in order to calibrate extruder. cfg in "Configuration". log (134. Only thing i can see in the logs is that the temp is slowy declining to below 170 and then stops. It is # not recommended to set this unless there is an electrical # requirement to switch the heater faster than 10 times a second. The next time you turn it on it will be back at 175 degrees. If you're already within the limit, it does nothing. cfg. Polymer acceleration rate, in air gap, similar to going from 0-60mph in less than 0. [°C] Temperatures below this lets the firmware assume, that the thermistor is defect. There should be a setting in the extruder section called max_temp. estrudere ⇒ vtr. V0. log (31. M104 [B<temp>]. THEN it cools down to 150C and going through the same erroring as mentioned before Extrude below minimum temp It's hard to tell, what this caused - but the extruder was switched off. Basically magic. md. # The default is 0. . Minimum printing temperature. 问题： !! {"code":"key111", "msg": "Extrude below minimum temp 解决办法： 在配置文件中修改： 增加：min_extrude. max_temp in [extruder] is 260. I changed all the. . Here are some details about my setup: Printer Model: Ender3v2. Pro2 won't extrude below 220C. but the parts printed below nominal. Then go to the extruder temperature drop-down box and select "Off". When switching between two PLA spools and colors: While the extruder is cold set the heat to 120°C and wait for it to heat up. After several minutes the temperature should start to return to its initial room temperature value. S - Cold extrude minimum. . For example on a zigzag surface the printer will start in a corner and move back and forth, but not extrude anything until the moves are longer. After several minutes the temperature should start to return to its initial room temperature value. Hi everyone, I have had a problem with the temperature of the 3D printer for days. Voltage across the thermistor seemed to be smoothly changing whereas the temperature reading would have jumps. Vagulus Posts: 267 Joined: Mon Mar 25, 2019 5:27 am. The target exit temperature for the alloys 6005A, and 6061 is 950° F. When you calibrate the E steps for filament you set them so that when you ask the printer to extrude 100mm then exactly 100mm is extruded. For PETG it will wait for a few more seconds. 5 KB) moonraker. Expected behavior: Panel should enable/disable based on hotend temperature. - This value is multiplied by the target extruder temperature and the result is used as the preheat value for the extruder while the bed is heating. 1 Y20 Z0. Hi all im using superslicer and today I keep getting {"code":"key111", "msg": "Extrude below minimum temp See the 'min_extrude_temp' config option for. log, the measured temperatures always stays within the limits of the targets (200°C and 235°C). @enix I just checked the source code and it appears that 160°C minimum extrusion temperature is hard-coded. axis_minimum, axis_maximum: The axisklippy. Hereticx5, could you share your “printer. M302 P1 disables the cold extrude safety. extruder]. Add skirt to the model 4. Thoughts about Raise3D, 3D printing and making in general. ;FLAVOR:RepRap ;TIME:4628 ;Filament used: 1. Hi, all of a sudden I'm getting "extrude below minimum temp" right after homing and bed mesh. Access your Sonicpad via the web. Bed Mesh with Relative Reference Index. MINIMUM (default: min_temp). If you change it in the text field, you need to press return or leave the field to set the value. I have replaced a few thermistors though. The latest of my call it shit shows is this. Repeat if necessary Chill roll not contacting sheet uniformly Raise nip pressure to a minimum of 600 pli (pounds / linear inch of wetted surface) Adjust flow from die to minimize thick areas in webTypical extrusion processing temperatures of TPU’s are as follows: EXTRUDER 60A TO 75A 80A TO 90A 95A TO 75D REAR 315 – 340 °F 345 – 370 °F 375 – 400 °F MIDDLE 340 – 365 °F 365 – 390 °F 385 – 410 °F FRONT 360 – 385 °F 375 – 400 °F 395 – 420 °F DIE 365 – 390 °F 380 – 405 °F 405 – 430 °FFollow the procedure to have the machine ready for mounting. The most important things to remember when configuring Ender 3 retraction settings are to use a generous retraction distance to accommodate the Ender’s Bowden extruder, set the maximum retraction count well below the Cura default of 100 unless you’re using indestructible filament, and avoid using an extra prime amount unless you really. Extrude below minimum temp The text was updated successfully, but these errors were encountered: All reactions. Is there a way in Klipper fer let him ignore extrusion and temperatures without going to upset the. for the parameters that control this check. becuase it is below minimum temp. cfg. My guess is the following: your gcode sets the target bed temperature and waits for it to be reached using M190; after the bed temperature is reached, your gcode. Is there a way to lower the min temp for extrusion? I have some SOFT filament that extrudes well between 145-150°C but the firmware doesn't allow extrusion at those temps. With the introduction of new high-tech aluminium alloys designed for high end applications such as aerospace, automotive or safety products we have seen an increase in requests for complex mechanical specifications and a decrease in final. target to get the target temperature of the current extruder. Is there a way to lower the min temp for extrusion? I. In Cura, I have the temp set to 210º but when the print starts, the temperature starts to fluctuate then falls below the minimum temp then stops. Calibrate printing temperature. Fact-checked. 524. Logischerweise kommt dann dieser Fehler „msg": "Extrude below minimum temp. md","path":"firmware/Klipper/Connect RPI uart. i now this is not the reasen of the slowy droping of the temp. I did NOT change the start_print macro, nor was there an update. 88)2. Maximum extruder temperature MAXTEMP [°C]. log (31. Maximum defect temperature MAX_DEFECT_TEMPERATURE [°C] Temperatures higher this. The extruder had six barrel zones with independent temperatures: the first two temperatures were maintained at 40 °C and 80 °C, respectively; the third zone was set at 100 °C, 115. Then the extruder is heated. Since the coefficient depends on temperature, pressure, and velocity (8), surface temperature changes for the barrel and screw in the feeding section will strongly affect the performance of the extruder. Loading More Posts. Be sure that you have preheated the nozzle prior to extruding, many firmware's have built in protection to disallow extrusion below a certain temperature of the nozzle. Then go to the extruder temperature drop-down box and select "Off". Even changed the main board to about her e3v3 board. 方法1：修改切片配置，避免温度先到打印温度然后下降进行打印前动作. Maybe you picked the wrong fan setting. It is common for the chamber temperatures inside an enclosed Voron printer to reach 55–60 ºC. Only thing i can see in the logs is that the temp is slowy declining to below 170 and then stops. parent 3167e8ddbe. Heya, this been bugging me for a couple of days, requesting the input of the masters. Mainsail requires a minimum configuration to function properly and will display a warning at startup if the required parts are not found in your configuration file(s). Kevin O'Connor 2016-09-30 19:04:24 -04:00. I tried the code below but when I add this line my extruder temp turnes to 0 degrees and cant figure it out. util. 0 F5000. Copy link Owner. Suggested Steps to Getting a Good 3D Filament Flow. Part Cooling Fan - OFF or LOW Feeding / Spooling - No specific requirements. The SAVE_CONFIG command will update the printer config file and restart the printer. M109 S [first_layer_temperature] 先让温度到150,然后开始开始打印前动作，执行玩前摇把打印头温度提升到打印温度. ) in their standard configurations. #if ENABLED(PREVENT_COLD_EXTRUSION) case 302: gcode_M302(); break; // M302:. Do not use too much values. log (134. If the file set the temp below 191, then all. log (134. Slicer Software: Cura. cfg” to see where I went wrong because now my circles are are no longer round but rather oval! $\begingroup$ Please read the answer below to disable it. So, if z_safe is equal to your actual z +20, then it will move up from where it currently is (lets say 30mm) plus 20, so the final move would have the Z axis going up by 50mm, not the 20 you are expecting. 2. Multidimensional vectors can currently be only accessed as a simple vector variable resulting in a string value (e. Properly increase the first layer printing temperature and hot bed temperature. 0 KB) I have an Ender6 with klipper direct extruder, lately it throws min_extruder_temp(midway or almost end print). M190 S80 ; Wait for Heat Bed temperature M109 S205 ; Wait for Extruder temperature G28 ; Home all axes. . bootuz-dinamon commented. hamstat07 • 2 yr. E0 is the reference number for the first extruder. However, only a few temperature profiles will produce an acceptable product while providing optimum process conditions. This depends on your particular setup / chamber temperatures. homed_axes: The current cartesian axes considered to be in a "homed" state. 0 KB) I have an Ender6 with klipper direct extruder, lately it throws min_extruder_temp(midway or almost end print). Hi, all of a sudden I'm getting "extrude below minimum temp" right after homing and bed mesh. restart klipper/mainsail - hotend temp command set back to 0, but hotend still at ~195. github","path":". #min_extrude_temp: 170 # The minimum temperature (in Celsius) at which extruder move # commands may be issued. If it the target or current temp is higher than the specified max (default from. cfg. The new data confirms previous results indicating higher R-value per inch for XPS compared to EPS. Then the extruder is heated. V0. The hotend works, perfectly, with PrusaSlicer too, and I have compared SuperSlicer&PrusaSlicer's G-Codes: Super Slicer starts with (I have shaded the differences): M107 M190 S60 ; set bed temperature and wait for it to be reached G10 P0 R200 S215; sets the standby temperature After playing around, I've determined that the mk3 simply won't even attempt to extrude if it thinks the extruder is too cold, and in particular the extruder did not start following the extrusion commands in the Gcode until it was >190 degrees (note that it won't even work at 190, only greater than). axis_minimum, axis_maximum: The axisIt's probably your G91, you have calculated an absolute move position, then are telling it to try to move there relatively. Extrude below minimum temp See the 'min_extrude_temp' config option for details. I don’t recommend lowering the retraction settings below 5 mm as this makes stringing worse in my experience. 2 Processing of material. 92 you can also do a cold extrusion if you allow it (M340 S1 i think). This G-code prints just fine. 2. Yup 115V did it. min_temp: max_temp: # The maximum range of valid temperatures (in Celsius) that the # heater must remain within. PrusaSlicer的起始G修改. print_start. Namely would like to print a specific TPU, have attached link below. 0 KB) I have an Ender6 with klipper direct extruder, lately it throws min_extruder_temp(midway or almost end print). It keeps telling me that I'm trying to extrude below 180 despite what EXTRUDE_MINTEMP is set. The main purpose of knowing the temperature is to maintain maximum press speeds. For SUNLU PETG, they recommend a printing temperature of 235-245°C. The picture below shows the barrels of the extruder exposed. I have replaced a few thermistors though. Inappropriate printing temperature can cause over/under extrusion by melting. 5-in. Only thing i can see in the logs is that the temp is slowy declining to below 170 and then stops. 2. 5 to 2 times thicker than XPS. So Marlin setting prevented move extruder for Tmin extruder. if they are discoloured or hot while printing fix them. So, if z_safe is equal to your actual z +20, then it will move up from where it currently is (lets say 30mm) plus 20, so the final move would have the Z axis going up by 50mm, not the 20 you are expecting. i now this is not the reasen of the slowy droping of the temp. Go back to Klipper and do Pressure Advance. Mein real name is Willi. 215°C - 235°C. Maximum defect temperature MAX_DEFECT_TEMPERATURE [°C] Temperatures higher this. For this reason, the two products are fed to the extruder as separate melt streams via a concentric tube feed inlet, which also. 20 degree steps for unused temperatures and 10° steps in important ranges are enough. 5 KB) moonraker. At a minimum, this code should home the axes and reset the extruder. I did NOT change the start\_print macro, nor was. i now this is not the reasen of the slowy droping of. Nothing works. Try two times, with and without retractions especially on Bowden setups. turn off hotend, allow to cool below safe extrude temp. Indeed, it is hard to answer this question without a little more context. Something I really have no Idea of doing, is the different g-codes for tool changing and so on. Your startup gcode is a mess. klippy. You should calibrate your extruder first. 0. Sudden Issue with Extruder temp reading. Only thing i can see in the logs is that the temp is slowy declining to below 170 and then stops.