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wiki:tools:jaxen_cnc_mill [2026/08/22 17:49] – z limit post colinlwiki:tools:jaxen_cnc_mill [2026/09/13 22:04] (current) – z encoder colinl
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 Jaxen is the most powerful CNC mill at VHS, capable of milling steels and other metals harder than aluminum and brass. Jaxen is the most powerful CNC mill at VHS, capable of milling steels and other metals harder than aluminum and brass.
  
-{{:tool:metal_cnc:jaxen_2026-july.jpg?600|}}+{{:wiki:tools:jaxen2026aug-closeup.jpg?600|}}
  
-As of 2026 March, it is being prepared for wider member use.+As of 2026 September, it is being prepared for wider member use by the Metal CNC committee.
  
 This is the homepage for Jaxen. Wiki pages for Jaxen: This is the homepage for Jaxen. Wiki pages for Jaxen:
   * [[jaxen_operating|Jaxen Operating Guide]]   * [[jaxen_operating|Jaxen Operating Guide]]
-  * [[jaxen_feed_speed|Jaxen Feed-Speed Database]]+  * [[jaxen_joblog|Jaxen Job Log]]
   * [[jaxen_electrical|Jaxen Electrical Documentation]]   * [[jaxen_electrical|Jaxen Electrical Documentation]]
  
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   * **Sensors:** 3x Limit switches magnetic proximity, USB-C probe (not implemented), toolsetter (not implemented)   * **Sensors:** 3x Limit switches magnetic proximity, USB-C probe (not implemented), toolsetter (not implemented)
  
-=== Rigidity + Backlash === +=== Backlash === 
-2026 Aug updated tests: With software backlash compensation enabled, users can expect accuracy of 0.01mm or better in X and Y.+**As of 2026 Aug, with software backlash compensation enabled: users can expect accuracy of 0.01mm or better in X and Y.**
  
-Raw mechanical backlash before compensation: +Raw mechanical backlash before compensation: X: 0.08mm, Y: 0.06mm, Z: 0.16mm (Z does not have an encoder!). 
-  * X: 0.08mm + 
-  * Y: 0.06mm +=== Rigidity === 
-  * Z: 0.16mm * This is being investigated further.+ 
 +To be measured...
  
 === Max build size: === === Max build size: ===
-  * Y: ~130mm, see note below.+  * Y: 130-180mm, depending on workholding.
   * X: 350mm (largest part size is larger: half the width of the enclosure)   * X: 350mm (largest part size is larger: half the width of the enclosure)
   * Z: 250mm (distance from chuck face to vice top)   * Z: 250mm (distance from chuck face to vice top)
- 
-Y axis increase plan: 
- 
-Move the Vice mount point backwards one slot to middle slot. 
-Would also need to re-adjust the Y home position, since it likely won't reach it anymore. 
  
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-==== Training ====+====== Training ======
   * **Mandatory training required** before use.   * **Mandatory training required** before use.
   * Suggested to first complete training and certification on the [[wiki:tools:6040 CNC Mill|6040 CNC Mill "Loratron"]] but not mandatory.   * Suggested to first complete training and certification on the [[wiki:tools:6040 CNC Mill|6040 CNC Mill "Loratron"]] but not mandatory.
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 ==== Speeds & Feeds ==== ==== Speeds & Feeds ====
-  * Use the CNC PC’s cutting speed calculator to determine correct RPM and feed rates   +Always set both cutting speed and feed rate properly to avoid tool damage and poor results. 
-  * Always set both cutting speed and feed rate properly to avoid tool damage and poor results  +  * You can look at the Jaxen Job Log for examples of past jobs so you get repeatable results. 
 +  * There is also a tool on the Jaxen CNC PC for suggesting RPM and feed rates based on your job. Name???? 
  
 ---- ----
-==== Maintenance ToDo List ====+====== Maintenance ====== 
 + 
 +==== ToDo List ==== 
 **Critical** **Critical**
-  * Splice spindle encoder cable (or run with PID control turned off) 
   * Replace metal side panel with plexiglass for viewing from the workstation.   * Replace metal side panel with plexiglass for viewing from the workstation.
   * basic door on front   * basic door on front
   * tramming, squaring vice, and other mill accuracy verification procedures.   * tramming, squaring vice, and other mill accuracy verification procedures.
 +  * Add encoder to Z axis, change driver to A spare or get new driver.
  
 **Non-Critical** **Non-Critical**
 +  * Measure rigidity
   * Increase Y axis limit by moving vice, verify new limits and update specs.   * Increase Y axis limit by moving vice, verify new limits and update specs.
   * Secure XYZ hard limits better, each only held with 1 screw.   * Secure XYZ hard limits better, each only held with 1 screw.
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   * Consider systems for preventing crashes, currently only have software limits.   * Consider systems for preventing crashes, currently only have software limits.
   * Add 2nd solid state relay to cut off power to motor drivers.   * Add 2nd solid state relay to cut off power to motor drivers.
 +  * Check effectiveness of spindle encoder index pin, and potentially remove to free-up IO. Since it is not actually on spindle, index is not indicating any real fixed location.
  
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 ==== Maintenance Log ==== ==== Maintenance Log ====
 ^ Date       ^ Who        ^ Note                                                                 | ^ Date       ^ Who        ^ Note                                                                 |
 +| 2026 Aug 28  | Colin L   | Splice spindle encoder cable, terminate, cable management, encoder PPM settings adjust.    |
 | 2026 Aug 21  | Colin L   | Ground bus bar behind controller re-soldered, fix intermittent connections (spindle grounding). Tighten limit switch bracket (Z). Added 2nd magnet to Z limit post after failed homing. Remeasured backlash, same results. Setup software backlash compensation using test results, re-tested showing accuracy is now about 0.01mm.  | | 2026 Aug 21  | Colin L   | Ground bus bar behind controller re-soldered, fix intermittent connections (spindle grounding). Tighten limit switch bracket (Z). Added 2nd magnet to Z limit post after failed homing. Remeasured backlash, same results. Setup software backlash compensation using test results, re-tested showing accuracy is now about 0.01mm.  |
 | 2026 Aug 15  | Colin L   | Cut another notch in rear enclosure panel for column access.    | | 2026 Aug 15  | Colin L   | Cut another notch in rear enclosure panel for column access.    |
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-==== History ====+====== History ======
   * **Donated by:** [[https://talk.vanhack.ca/u/ccudahy | Chris (ccudahy)]]  See [[https://talk.vanhack.ca/t/cnc-milling-machine-donation/10613]]   * **Donated by:** [[https://talk.vanhack.ca/u/ccudahy | Chris (ccudahy)]]  See [[https://talk.vanhack.ca/t/cnc-milling-machine-donation/10613]]
   * **Donation terms:** Purchased by VHS for $1; donor retains first right of repurchase if disposed     * **Donation terms:** Purchased by VHS for $1; donor retains first right of repurchase if disposed  
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 {{tool:metal_cnc:jaxencncmill.jpeg?300|Jaxen CNC Milling Machine}} {{tool:metal_cnc:jaxencncmill.jpeg?300|Jaxen CNC Milling Machine}}
  
 +Pic of Jaxen about 2026 July during the move into the corner and new enclosure:
 +
 +{{:tool:metal_cnc:jaxen_2026-july.jpg?600|}}