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By Tommy Gingras

Last update 2021-10-04

CNC

Shapeoko 2 - Experimentations

Software

  • cncjs
  • Fusion 360

Hardware

  • Shapeoko 2
  • (Bit #1) 1/8 (3.175mm) shaft 3 flutes end mill
  • (Bit #2) 1/8 (3.175mm) shaft PCB milling end mill
  • Mastercraft Rotary Tool (54-4770-4)
  • Makita RT0701C
  • (Bit #3) 1/4 (6.35 mm) shaft straight 1/4 up cut
  • (Bit #4) 1/4 (6.35 mm) shaft round 3/8
  • (Bit #5) 1/4 (6.35 mm) shaft round nose 1/2
  • Spindle 500W

Notes

| NC File | Bit | RPM | Cutting Feedrate | Lead in/out Feedrate | Step-down | Tool | Material | Operation | Date | Success | Images | | --------------------------------------------------------------------------- | ------------------- | ----- | ---------------- | -------------------- | ---------- | -------------- | --------- | ----------- | ---------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --- | | sides_batch_1_1001_3mm.nc | #1 | 25000 | 635 mm/min | 400 mm/min | 1 mm | 54-4770-4 | Pine | 3D Adaptive | 2021-09-29 | No, the bit was deviated from the path. | | sides_batch_1_v2_1001_3mm.nc | #1 | 25000 | 420 mm/min | 100 mm/min | 1 mm | 54-4770-4 | Pine | 3D contour | 2021-09-29 | It works, but be sure that the stock is well attached to the waste board; also it is kind of hard on the machine, I'll try something else. |

| | sides_batch_1_v2_1001_3mm.nc | #1 | 25000 | 1000 mm/min | 200 mm/min | 0.25 mm | 54-4770-4 | Pine | 3D contour | 2021-09-29 | Works perfectly |
| | sides_batch_1_25k_1000_200_033_1001_3mm.nc | #1 | 25000 | 1000 mm/min | 200 mm/min | 0.33 mm | 54-4770-4 | Pine | 3D contour | 2021-09-29 | Works perfectly | Same as the one above, except using 0.33 mm | | shapeoko2_grid_first_through_hole_14in_3mmbit_halfin_depth.nc | #1 | 12000 | 1000 mm/min | 200 mm/min | 0.33 mm | 54-4770-4 | MDF | 3D contour | 2021-09-30 | Works perfectly, Low Noise, The job has been a little offset because I used the 1 mm bit on the edge to center the 3 mm (I've updated my CAM to use the center point). | PUT PICTURES HERE | a | | 1_4in_down-cut_bit_2x.nc | ¼in up cut straight | 10000 | 2000 mm/min | 800 mm/min | 1.53513 mm | Makita RT0701C | Pine | 3D pocket | 2021-10-03 | Yes, be sure to attach firmly the stock. |
| | 3_8in_round_2x.nc | 3/8in round bits | 10000 | 2200 mm/min | 1000 mm/min | 3 mm | Makita RT0701C | Pine | 3D Adaptive | 2021-10-03 | Yes, be sure to attach firmly the stock. |
| | 1_4in_up_cut_contour_slower_smooth.nc | ¼in up cut straight | 10000 | 1000 mm/min | 300 mm/min | 1 mm | Makita RT0701C | Pine | 3D contour | 2021-10-04 | Yes, but I had a lot of issues, Using higher feedrate with deeper cut was moving the stock. I need to improve the stock holder. Currently I use 3D printer clamps, I might retry with metal clamps in the future |
| | step2_smooth.nc | #3 | 10000 | 1000 mm/min | 250 mm/min | 1mm | Spindle 500W | MDF 3/4in | Contour 3D | 2021-10-17 | Yes, it is very slow.. but otherwise the path was too fast/deep and the bit has sliped onto the piece. | PUT IMAGES HERE |

| step1_plate_first_attempt_1000mm_3mm_MDF_34in_bit12in_round_node_rotated.nc | #5 | 10000 | 1000 mm/min | 500 mm/min | 3mm | Spindle 500W | MDF 3/4in | Pocket 3D | 2021-10-17 | Yes, it is quite fast ~20min to complete. The ramp used is Helix | PUT IMAGES HERE |

Notes found on internet

  • [Not Tested] Smaller passes 0.2 mm using a higher feedrate 1000-1200 mm/min
  • [Not Tested] Passes of 0.7 mm using a feed rate of 420 mm/min with an RPM of 6000, plunge rate of 100 mm/min

Tips

  • Be sure that the depth of your stock is the same everywhere
    • Use a planer (I don't have one and it is hard to define the 0 properly)
  • Attach your stock properly
    • Using double side tape
    • Using super glue
    • Using Clamps
  • Level your bed
  • let at least 10 mm around your stock to be able to clamp without touching the tool
  • Don't cut through the first time, I leave about a 1-2 mm
  • Try to set your zero at the middle of the piece to avoid offset when using the edge with a small diameter