Dimensional Accuracy Calibration for Delta Printers

thingiverse

The text appears to be instructions on how to calibrate a 3D printer using a simple method involving the printing of two specific boxes with dimensions 50mm and 100mm. Here's a summary: **Step 1: Measure the filament diameter** Measure the diameter of your filament, which should be around 2.85mm for most plastics. **Step 2: Print the 50mm box** Print the 50mm box using the printer's default settings. Measure its width in several locations to get an average value. **Step 3: Big Box** Slice and print a larger box with dimensions 100mm x 100mm. Measure its width in several locations. **Step 4: Figure out where the scaling error is** Compare the measured widths of both boxes. If the scaling errors are similar, adjust the arm length; if they're different, adjust the extrusion multiplier. **Step 5A: Adjusting the Arm Length** If the scaling errors are similar, calculate a new arm length using the average measured width and the desired width (50mm or 100mm). Re-calibrate the printer geometry after adjusting the arm length. **Step 5B: Adjusting the Extrusion Multiplier** Adjust the extrusion multiplier to fix the scaling error. If the boxes were too narrow, increase the extruder; if they were too wide, decrease it. No re-calibration of the printer geometry is needed in this case. **Step 6: Re-check and re-slice (if necessary)** Re-print the 50mm box and check its width with calipers. If the calibration piece doesn't come out perfect, you can start again.