CNC Router: Difference between revisions
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| colspan="2" | 15240 mm/min (600 in/min)
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| colspan="2" | 8890 mm/min (350 in/min)
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=== Reference Material ===
[https://
[https://www.cnccookbook.com/hub/speeds-and-feeds/ Feeds & Speeds
[https://www.
[https://drive.google.com/file/d/1q-PdAv_nw7_uOr-tP426cAEorOG3ylng/view?usp=sharing Download VCarve Pro v11.018 Trial] (CAD/CAM Software)
VCarve Pro Makerspace ID:
39330-F4690-16995-07DC5-70AEA-01778-91E18
=== FCFL References ===
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[https://drive.google.com/file/d/1hwypOCyQ11mNdx32k812W3lDYDm5G8pF/view?usp=sharing FCFL CAMaster WinCNC post processor for Fusion 360] - "FCFL_CAMaster_wincnc_m3x_171014.cps" with Automatic Tool Changer disabled.
[https://drive.google.com/file/d/
(DEPRECATED) [https://docs.google.com/spreadsheets/d/1OWSaMgkcoUyyKQk58nxxpIXn-BqWR1F2R01m_Mm7xRU/edit#gid=0 Old FCFL Bit Inventory] - Old spreadsheet. No longer in use.
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Standard Disclaimers:
* Monitor your cnc job at all times
* Don't be inebriated▼
* No loose items▼
* Standard safety gear (safety glasses)
* Tie back hair
▲* No loose items
▲* Don't be inebriated
* Don't be stupid
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=== Securing the Stock ===
Spoilboard has 1/4”-20 threaded sockets for clamping stock. 3D printed clamps are available for clamping materials up to 1.4" thick.
Clamps:
[[File:FCFL CNC Router Clamps.jpg|thumb|alt=FCFL CNC Router Clamps in various clamping configurations.|FCFL CNC Router Clamps in various clamping configurations.]]
[[File:FCFL CNC Router Clamp Dimensions.png|thumb|alt=FCFL CNC Router Clamp Dimensions|FCFL CNC Router Clamp Dimensions]]
These can be used in creative configurations to secure your stock.
*Up to ~1.4" stock can be secured.
*Use whatever bolts listed next that work with your configuration.
*Whenever possible, position bolts as close to the clamping area as possible, so clamping force is maximized. Ideally, position the clamp with a downward slope towards the piece being clamped.
*Clamps can be stacked--see photo for ideas.
*Clamps can also be used to butt stock to prevent translation. In this configuration, other clamps need to be used to apply downward force.
*See [[CNC_Router#Replacing_3D_Printed_Clamps|Replacing 3D Printed Clamps]] for the files and print instructions.
Bolts:
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WEAR EYE PROTECTION. Wear earmuffs to protect your ears. Make sure hair is tied back and loose sleeves are pulled back.
Lookup the required chip load for your material based on the tool's diameter! You'll need this to be able to calculate proper speeds and feeds.
Spindle speeds typically 7k-18k
Typical
Calculate
Match
(Chip load) =
Better to begin at lowest end of recommended
* the finish deteriorates because of vibration of the cutting tool
* tight radii causes the machine to adjust to a slower speed
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:* Use printer paper under the bit and move it back and forth
::* Lowering the Z until the bit just barely snags the paper. There should be room enough for the paper to drag under the bit.
* [https://youtu.be/r9-QHmy459o Click the 'Calibrate Switch' button]. The Z lower bound is now one paper width above the spoil board (~0.004" or 0.1mm). We do this to minimize cuts into the spoil board that we prefer to resurface as rarely as possible.
:* The command log will first asks you to jog the bit to the bed, which is already completed
:* This step will start the process to reset the Z bottom at the current position of the bottom of the bit
* Press 'enter' then the command log will say it will now use the Measure Tool feature and to ensure it can move freely
:* This step will take into account the length of whichever tool used
* Press enter and the machine will move up to the
:* The machine knows the location of
* After the Measure Tool operation is completed, the Z bottom limit has been set
* Test if the calibration has worked
:* Click the Park button to move the spindle to the
::* This should be off the edge of the spoil board
:* Jog the bit downwards towards the bed
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=== Replacing 3D Printed Clamps ===
[[File:FCFL CNC Router Clamp image.png|thumb|alt=FCFL CNC Router Clamp render|FCFL CNC Router Clamp]]
STL file:
* [https://drive.google.com/file/d/1FmcfCsJWTyyqtVQ97TQotZL2cJ2FVKzq/view?usp=sharing FCFL CNC Router Clamp STL]
Print settings:
* Position model on its side (bolt direction horizontal to bed)
* Material: PLA+
* 0.8 nozzle
* 0.2 layer height
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* Generate support everywhere
* Skirt
=== Replacing 3D Printed Dust Collection Boot ===
[[File:Dustboot1.jpg|thumb|alt=Dust boot|FCFL Dust Collection Boot]]
NOTE: This file's geometry tolerances need adjustment (boot groove & magnet holes). It may work on some printers and not on others, so be prepared to modify as needed (either physically or digitally). Holes for the M3 retaining pins were an after-mod, so are not included in the file and need to be manually added later.
This part can be printed as one piece or as two separate pieces.
* Full STL file requires a large printer:
** [https://drive.google.com/file/d/13Dxwsi6C2WWSWrQ5LSA_VqfQnIbXf5Xv/view?usp=sharing CNC Dust Boot Full.stl]
* Separate STL files can be done on any Ultimaker or similar printer:
** [https://drive.google.com/file/d/1rEx6f0t3lkniwuvnSYDCObXyN7-Jj_53/view?usp=sharing CNC Dust Boot Half A.stl]
** [https://drive.google.com/file/d/1wl_y9x7eB8jHbfCK3BMTucW-wmBR_UFu/view?usp=sharing CNC Dust Boot Half B.stl]
Print settings:
* Position model on its back (dust boot grooves facing upward)
* Material: PLA+
* 0.4 nozzle
* 0.15 layer height
* 6 walls
* 12 top & bottom layers
* 30% infill, cubic subdivision
* Generate support everywhere
* Skirt
Hardware:
* [3x] - 1/4" x 1/2" cylinder neodymium magnets
Assembly:
# Super glue the two halves together
# Press in the magnets. The magnets should be about flush and in the same plane as the top surface of the boot.
# Glue the magnets in place.
# Install the brushes. No glue is needed. Will need to modify to fit. Clamp to press in bristles in place.
# Drill holes to allow for M3 retaining "pins" to fit in.
== Troubleshooting ==
=== Spindle
Hit reset button on spindle controller console. Check that speed control knob is fully clockwise.
If there's an error code on the spindle's DRO, you can power cycle the machine (wait until the DRO LED's turn off). You WILL have to re-initialize and re-home your job though!
=== WinCNC
Restart software.
=== Z
The 'Calibrate Switch' button was probably clicked on accident. See section
''Only use this method if you are experiencing all the known issues below.''
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'''Known Issues'''
* The Touch Top and Measure Tool feature works without errors
* Before loading any G-Code, the Z Soft Limit is exceeded without the tool being close to the spoil board
== Pinned Items from Slack #cnc and Other References ==
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