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ender_3_maintenance [2025/01/23 03:15] – [Bed Leveling] jpelotender_3_maintenance [2025/01/23 04:36] (current) – [Bed Leveling] jpelot
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 This document is intended as a manual aimed at Hackberry lab assistants for guidance on maintaining the ever-growing fleet of printers. Knowledgeable lab assistants are encouraged to add their wisdom as more issues arise and new problems are solved. This document is intended as a manual aimed at Hackberry lab assistants for guidance on maintaining the ever-growing fleet of printers. Knowledgeable lab assistants are encouraged to add their wisdom as more issues arise and new problems are solved.
 +----
 ===== Short-term Maintenance ===== ===== Short-term Maintenance =====
-This section is for maintenance tasks that should be performed at regular intervals. +Maintenance tasks that should be performed at regular intervals. When the printers are being used heavily, these should be done every night at the start of the shift. 
- ==== Bed Leveling ====+==== Bed Leveling ====
 Lab assistants should regularly ensure that the printer beds are leveled properly. Improperly-leveled beds cause print failure and damage to the beds and nozzles. Bed leveling can look different depending on whether or not a touch sensor is installed for automatic bed leveling. Lab assistants should regularly ensure that the printer beds are leveled properly. Improperly-leveled beds cause print failure and damage to the beds and nozzles. Bed leveling can look different depending on whether or not a touch sensor is installed for automatic bed leveling.
-A printer bed is level when the nozzle is the correct height from the bed across the entire surface. At a good height, the nozzle should leave behind a solid line that isn't too thin but can't be rubbed off with your finger.+A printer bed is level when the nozzle is the correct height from the bed across the entire surface. At a good height, the nozzle should leave behind a solid line that isn't too flat but can't be rubbed off with your finger.
 === Manual Bed Leveling === === Manual Bed Leveling ===
 In essence, leveling a bed manually involves adjusting the height of the bed until it is an ideal distance from the nozzle at each corner and the center. The four wheels under the bed adjust the height of the bed. Put a piece of paper in between the bed and the nozzle; the bed is an ideal distance from the nozzle when the paper can be moved freely, but with slight resistance. In essence, leveling a bed manually involves adjusting the height of the bed until it is an ideal distance from the nozzle at each corner and the center. The four wheels under the bed adjust the height of the bed. Put a piece of paper in between the bed and the nozzle; the bed is an ideal distance from the nozzle when the paper can be moved freely, but with slight resistance.
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 === Automatic Bed Leveling === === Automatic Bed Leveling ===
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 +Automatic bed leveling uses the BL-Touch add-on to level the bed "semi-automatically". It works by taking measurements of the bed height in a grid and uses that data to compensate during printing. To "level the bed", you need to have the printer perform the measurements again. To do this, use the printer menu and navigate to: 
 +  Motion > Level Bed 
 +The printer will then retake the bed measurements. This should be done at the same frequency of manual bed leveling. 
 + 
 +== Z Offset == 
 + 
 +A self-leveling printer uses a value called the "Z-Offset" to translate between the bed height measurement and the height of the nozzle. If leveling the bed automatically provides inadequate results, it is likely that the Z-Offset needs to be calibrated. To do this, use the printer menu and navigate to: 
 +  Motion > Probe Z Offset 
 +The printer will auto-home and position the nozzle above the bed. You can then select "Probe Z Offset" again. Use the printer's scroll wheel to adjust the height of the nozzle. DO NOT use the wheels under the bed for this. Use a piece of paper as if you are manually leveling. Once you are done, press the wheel button again, then navigate to: 
 +  Configure > Store Settings 
 +to save your changes. You should have the printer re-level the bed anytime you adjust the Z-Offset. 
 +----
 ===== Long-term Maintenance ===== ===== Long-term Maintenance =====
 This section is for maintenance tasks that should be performed periodically. This section is for maintenance tasks that should be performed periodically.
  
 ===== Common Issues ===== ===== Common Issues =====

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