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--- wiki:tools:jaxen_cnc_mill [2026/08/23 14:52] – headings colinl
+++ wiki:tools:jaxen_cnc_mill [2026/09/13 22:04] (current) – z encoder colinl
@@ Line 3: / Line 3: @@
 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 by the Metal CNC committee.
+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:
@@ Line 37: / Line 37: @@
   * **Sensors:** 3x Limit switches magnetic proximity, USB-C probe (not implemented), toolsetter (not implemented)
-=== Rigidity + Backlash ===
+=== Backlash ===
-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: ===
-  * Y: ~130mm, see note below.
+  * Y: 130-180mm, depending on workholding.
   * X: 350mm (largest part size is larger: half the width of the enclosure)
   * 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.
 ----
@@ Line 75: / Line 71: @@
 **Critical**
-  * Splice spindle encoder cable (or run with PID control turned off)
   * Replace metal side panel with plexiglass for viewing from the workstation.
   * basic door on front
   * 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**
+  * Measure rigidity
   * Increase Y axis limit by moving vice, verify new limits and update specs.
   * Secure XYZ hard limits better, each only held with 1 screw.
@@ Line 95: / Line 92: @@
   * Consider systems for preventing crashes, currently only have software limits.
   * 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.
 ----
@@ Line 101: / Line 98: @@
 ==== Maintenance Log ====
 ^ 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 15  | Colin L   | Cut another notch in rear enclosure panel for column access.    |
@@ Line 136: / Line 134: @@
 {{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|}}