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wiki:tools:jaxen_operating [2026/09/06 03:17] – manual moves. reorder colinlwiki:tools:jaxen_operating [2026/09/06 13:41] (current) – spelling colinl
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 The roadmap: The roadmap:
  
-  * First, complete training on the smaller CNC "Bobby-Fett". 
   * Sign up for Jaxen training   * Sign up for Jaxen training
   * Study the training material on this page   * Study the training material on this page
   * On your training day 1:   * On your training day 1:
-    * Get verbally tested on the training material 
-    * You pass with 9/12 correct answers. 
-    * The trainer will review what you got wrong so you have correct knowledge 
     * Practical supervised training where the trainer walks you through everything.     * Practical supervised training where the trainer walks you through everything.
     * Ask as many questions as you like.     * Ask as many questions as you like.
 +    * Do the exam verbally at the end of this page.
 +    * You pass with 10/12 correct answers.
 +    * The trainer will review what you got wrong so you have correct knowledge
   * Training Day 2:   * Training Day 2:
     * The practical exam portion, where you make the "demo part" under supervision. Ask any questions you want while doing it.     * The practical exam portion, where you make the "demo part" under supervision. Ask any questions you want while doing it.
     * If you make the part correctly, you pass training!     * If you make the part correctly, you pass training!
 +    * Your name is added to the list of trained people **TODO where will this be???**
 +  * Your first personal project:
 +    * For your first project, you must discuss your project plan with a CNC committee member who is currently offering training. This is to help you apply the skills you learned from the training to new scenarios. Also, experienced members can help you get what you want: either fast production, or high quality. Be sure to tell them what you want.
 +  * Your 2nd and later projects:
 +    * On your second and later projects, you are encouraged to ask for advice, but you can begin using the machine without the need for permission, while still minding other's access to the machine. By then, you'll have enough experience, you'll probably be teaching us!
  
-After you have been trained and your name is added to the list of trained people, and you've completed the training demo project, you can begin your own projects.  
-For your first project, you must discuss your project plan with a CNC committee member who is currently offering training. This is to help you apply the skills you learned from the training to new scenarios. Also, experienced members can help you get what you want: either fast production, or high quality. Be sure to tell them what you want. 
-On your second and later projects, you are encouraged to ask for advice, but you can begin using the machine without the need for permission, while still minding other's access to the machine. 
  
 -------------------------- --------------------------
 ===== Basic Reminders ===== ===== Basic Reminders =====
  
-  * Must wipe the vice before clamping. Chips between metal cause dimension errors.+  * Sign in on the log book before you start working! 
 +  * If you're a committee member and modifying the machine, check and update Jaxen's homepage! 
 +  * Wipe the vice before clamping. Chips between metal cause dimension errors.
   * Wipe calipers before measuring. Same reason.   * Wipe calipers before measuring. Same reason.
-  * Tap the stock into the vice- must be resting on parallels- this eliminates "vice-lift".+  * Tap the workpiece into the vice- must be resting on parallels- this eliminates "vice-lift" (Jaxen's vice is pretty resistant to this, but it's still good practice).
   * Don't let the cutter bit fall out! Remember the 3 points you must touch while doing this. Refer to training.   * Don't let the cutter bit fall out! Remember the 3 points you must touch while doing this. Refer to training.
   * Chip control- don't cut chips. Chips dulls bits and scratch your surface finish. Get them out of the path of the bit somehow (coolant to be added).   * Chip control- don't cut chips. Chips dulls bits and scratch your surface finish. Get them out of the path of the bit somehow (coolant to be added).
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 ===== Startup Procedure ===== ===== Startup Procedure =====
  
 +  - Sign in by writing your name and date on the paper log. This is so you can see what else is happening with this shared machine.
   - Boot the PC   - Boot the PC
   - Power on the electrical panel (Plug in the cord)   - Power on the electrical panel (Plug in the cord)
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 The "draw bar" mates with threads on the top of the collet. The "draw bar" mates with threads on the top of the collet.
  
-===== Squaring stock: =====+===== Squaring Stock =====
  
 Identify the flattest faces to use as clamping faces, then face the roughest first. Identify the flattest faces to use as clamping faces, then face the roughest first.
 Next, put this newly faced face against the jaws, and face the next face, 90* from the first. Next, put this newly faced face against the jaws, and face the next face, 90* from the first.
-    However, when clamping, use a round stock against the unfinished face to prevent it from altering squareness.+However, when clamping, use a round stock (rod) against the unfinished face to prevent it from altering squareness.
 Continue using these principles. Continue using these principles.
 For the last 2 sides, can use an endmill bit to make faces perpendicular to the spindle axis. For the last 2 sides, can use an endmill bit to make faces perpendicular to the spindle axis.
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 **Top-hat method:** **Top-hat method:**
  
-Good for when you don't need fully-faced sizes, but complete top and bottoms. +Good for when you don't need fully-faced sides, but complete top and bottoms. 
-(There is no way to accurately face the full sides using this method)+(Technically this method cannot **perfectly** face the full sides, but it's practically unnoticeable)
  
-Can use a chamfering tool for final step as an alternative to deburring.+Can use a chamfering tool for final step as an alternative to de-burring.
  
-**Facing:**+**Facing/Surfacing**
  
 If you climb-cut a face around the edges, it won't produce a burr, because the burr is sucked inwards and naturally cut off. If you climb-cut a face around the edges, it won't produce a burr, because the burr is sucked inwards and naturally cut off.
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 ===== Speed and feed resources ===== ===== Speed and feed resources =====
  
-TODO need a metric version!!!!!!!!!+TODO need to link a metric version!!
  
 https://www.autodrill.com/resources/recommended-tool-speed-chart https://www.autodrill.com/resources/recommended-tool-speed-chart
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 You will definitely need a custom mount for your part if: You will definitely need a custom mount for your part if:
-  * Less than 2 parallel faces of your finished part are stock+  * Your part does not have at least 2 parallel faces that are rigid enough to be load bearing.
  
 The standard mounting method currently is M6 threaded holes spaced 10mm apart, passing through non-threaded holes in your workpiece. The standard mounting method currently is M6 threaded holes spaced 10mm apart, passing through non-threaded holes in your workpiece.
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   - Set your "Spindle speed": again, refer to Jaxen's job log, or a public feed-speed chart. 1000 RPM is typical for Jaxen.   - Set your "Spindle speed": again, refer to Jaxen's job log, or a public feed-speed chart. 1000 RPM is typical for Jaxen.
  
-Now to make your operations / toolpaths!+**Now to make your operations / toolpaths!**
  
 In this tutorial, we are going to create a simple surfacing/facing job, to prepare stock for a later project. In this tutorial, we are going to create a simple surfacing/facing job, to prepare stock for a later project.
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   - Export your GCode: Click the "Post Process" button. Click OK in the window to save your code to a file (default is same directory as the FreeCad file).   - Export your GCode: Click the "Post Process" button. Click OK in the window to save your code to a file (default is same directory as the FreeCad file).
  
 +===== Jaxen training demo project =====
 +Skills/operations that will be part of the demo project:
 +  * Experience with milling steel
 +  * Getting good surface finish
 +  * Verifying dimensions
 +  * Profile, with midway pause and resume
 +  * Through-hole opening
 +  * Pocket with controlled step down
 +  * Engraving
 +  * Chamfer
  
 ===== General Tips ===== ===== General Tips =====
  
--Work from the inside out, because the outer material is what typically touches the vice, and also the perimeter is usually more volumeous than the inner parts, so it makes the part more rigid for longer during the job. +  * Work from the inside out, because the outer material is what typically touches the vice, and also the perimeter is usually more volumeous than the inner parts, so it makes the part more rigid for longer during the job. 
- +  * Do blind pockets in steps, because the deeper any single pass, the more the bit will vibrate, and this makes the walls rough. 
--Do blind pockets in steps, because the deeper any single pass, the more the bit will vibrate, and this makes the walls rough. +  * The final pass should always be very thin for the best finish. 0.1mm finishing pass usually works well. 
- +  * When designing your CAD, inside corner radii are limited! Keep in mind the radius of your toolbits.
-Additionally, the final pass should always be very thin for the best finish. 0.1mm finishing pass usually works well. +
- +
-**TODO** Job prep: For example, choosing inside corner radii based on bits used.+
  
 ------------------------------ ------------------------------
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-==== UCCNC G-Code Execution ====+===== UCCNC G-Code Execution =====
  
 It is highly recommended to first, raise the Z axis above your workpiece, then temporarily set the G54 workspace Z zero to this raised space. **Tip: if you already set your Z zero when setting up your workspace, you can "copy" this into G55 (workspace #2) and then come back to it after testing your code! Alternatively, you can use a G0 command to translate Z by an exact amount that you can undo easily.** It is highly recommended to first, raise the Z axis above your workpiece, then temporarily set the G54 workspace Z zero to this raised space. **Tip: if you already set your Z zero when setting up your workspace, you can "copy" this into G55 (workspace #2) and then come back to it after testing your code! Alternatively, you can use a G0 command to translate Z by an exact amount that you can undo easily.**
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 If you click CYCLE START without clicking RUN FROM HERE, the tool will simply move in the direction it was going before, but there's no guarantee it will follow the right path (if you moved it for example). If you click CYCLE START without clicking RUN FROM HERE, the tool will simply move in the direction it was going before, but there's no guarantee it will follow the right path (if you moved it for example).
  
-Steps: +**Steps:**
   - During your operation, click CYCLE STOP when you are just at the boundary of 2 lines of G-Code operating. Doesn't matter whether you're at the end of one or beginning of the one you want to resume in.   - During your operation, click CYCLE STOP when you are just at the boundary of 2 lines of G-Code operating. Doesn't matter whether you're at the end of one or beginning of the one you want to resume in.
-  - Do whatever you need while the machine is paused. Move workholding, manually jog the machine, adjust workspace origin, etc.+  - Do whatever you need while the machine is paused. Move workholding/workpiece, or manually jog the machine. 
 +    - HOWEVER: be careful of executing G-Code in this state! Your program may be depending on mode G90 or G91, and any other settings, and won't know if you change them!
   - Jog the machine back to the start of where you want to resume.   - Jog the machine back to the start of where you want to resume.
   - Scroll in the GCode window to highlight the line and feature you want to resume at the start of.   - Scroll in the GCode window to highlight the line and feature you want to resume at the start of.
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   - What happens if you jog the X axis all the way to the left? All the way to the right?   - What happens if you jog the X axis all the way to the left? All the way to the right?
   - You are planning a surfacing operation in CAM. What resources can you consult to figure out a feed rate of the tool?   - You are planning a surfacing operation in CAM. What resources can you consult to figure out a feed rate of the tool?
 +
 +
 +
 +
 +
 +------------------------------------
 +
 +    Temp job log notes:
 +
 +Climb cutting even for side-milling makes a noticable difference. Always climb cut side faces.
 +
 +Sep 6 facing steel plate. Should be all same specs as before, but this time plate is flat, so depth is even across whole operation.
 +1000 rpm, 30mm/min.
 +No lip between passes!
 +
 +2nd half: switched to 1400 rpm
 +result: no visible difference, may cause finish to change faster 
 +
 +observations between climb and conventional: there may be a relationship to the time into the pass. The circular swirl pattern gets more significant later on during the pass, maybe due to buildup of chips.
 +
 +The actual left/right side of pass does not seem to matter- the overlap of the swirl pattern appears to be due to minor changes in surface height.
 +
 +Making passes in the same direction each time does seem like it would provide better finish.