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wiki:tools:jaxen_cnc_mill [2026/08/29 00:54] – spindle enc index issue colinlwiki:tools:jaxen_cnc_mill [2026/09/13 22:04] (current) – z encoder colinl
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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 ===
 **As of 2026 Aug, 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: X: 0.08mm, Y: 0.06mm, Z: 0.16mm (Z needs to be investigated further).+Raw mechanical backlash before compensation: X: 0.08mm, Y: 0.06mm, Z: 0.16mm (Z does not have an encoder!). 
 + 
 +=== Rigidity === 
 + 
 +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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 **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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 ==== Maintenance Log ==== ==== Maintenance Log ====
 ^ Date       ^ Who        ^ Note                                                                 | ^ Date       ^ Who        ^ Note                                                                 |
-| 2026 Aug 28  | Colin L   | Spindle encoder....          |+| 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.    |