XY Tolerance Checker for .4mm Nozzle

Initial idea to assess quality of printing with a .4mm nozzle with a model specifically designed for .4mm wall thickness.  Specifically created as a starting point to diagnosing surprising print results on one printer where printed part did not look normal as per design.

Indicates whether there are extrusion issues across the board or focused on particular wall thickness. Takes short amount of time to run approx 19 minutes.

The model is 3 squares in increasing size - 10mm, 20mm, 30mm. 

The wall thickness varies per square 

• 10mm = .42mm (Nozzle width x 1)
• 20mm = .84mm (Nozzle width x 2)
• 30mm = 1.26mm (Nozzle width x 3)

Print model with .4mm nozzle at .20 layer height.

Use calipers to measure width of each wall in each direction.  Approach I used for calipers was to squeeze until slight resistance and let go pressure, without moving, removing caliper.  The measurement will ease from initial value to settled value, note down the settled value.

Spreadsheet via Google Docs provide to note down values for Front-X, Back-X, Left-Y, Right-7 (in the blue section) and then simple averages are calculated and tolerance result provided color coded for attention (green=great, amber=okay, red=not great).

Here is link to public Sheet document. Has two worksheets, one is empty ready to fill-in other work sheet “Example” shows a example tests carried out between MK2.5 and X1C.  Interesting X1C struggled with .42mm width but was fine with thicker walls - which indicates more of a slicer setting issue i.e perhaps minimum wall thickness.

Work in progress, created for a specific scenario to assist in diagnosis of issue. This isn't intend as total solution just one part in a diagnostic approach to understanding printer / filament tolerance.