Basic Information: A SIMPLE SOLUTION
Printer Model: ANY
MCU / Printerboard: ANY
Host / SBC
klippy.log
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Describe your solution:
I used CHATGPT to make me a chart utilitilzing an example that @SINEOS which was
Klipper Safety mechanism
max_extrude_cross_section [mm²] = 4.0 x Nozzle_Diameter^2 = 4.0 x 0.4^2 = 0.640 mm²
Extruded_Volume [mm³] = Extruded_Length [mm] x (Filament_Diameter [mm] / 2)^2 x Pi = 15 mm x (1.75 mm / 2)^2 x 3.14 = 36.1 mm³
Actual_Extruded_Cross_Section [mm²] = Extruded_Volume [mm³) / Movement_Length [mm] = 36.1 mm³ / 30 mm = 1.2 mm²
And told CHATGPT that this was a 3 step formula and that I need to stay within this safety range
Maximum Extrusion = 4.0 x Nozzle_Diameter^2 = 4.0 x 0.4^2 = 0.640 mm².
These were the results:
Here’s a quick reference chart that shows:
• Extruded Length (mm)
• Required Movement Length (mm)
…to keep the Actual Extruded Cross Section ≤ 0.640 mm²
We’re using:
| Extruded Length (mm) | Required Movement Length (mm) | Actual Cross Section (mm²) |
|---|---|---|
| 1.0 | 3.76 | 0.640 |
| 2.0 | 7.51 | 0.640 |
| 5.0 | 18.78 | 0.640 |
| 7.5 | 28.17 | 0.640 |
| 10.0 | 37.56 | 0.640 |
| 12.5 | 46.95 | 0.640 |
| 15.0 | 56.33 | 0.640 |
| 17.5 | 65.72 | 0.640 |
| 20.0 | 75.11 | 0.640 |
I’m sorry if things look a bit squished together as I’m writing this from my iPhone. Hope this helps out a lot of people out there cause I went thru hell trying to figure out a simple solution. Cheers