Dimensional Accuracy Test

By printing this part which is a stack of different diameters, you will be able to diagnose dimensional inaccuracy in every directions. Use a caliper to measure the dimensions of each cylinder and the height of each level.

If the inaccuracy scales with the size of the diameters, the cause is steps/mm of your steppers. (note: you may also want to adjust the flow, and maybe redo some calibrations if the change is important).

If it does not scale, you can correct it by adjusting your Horizontal Expansion.

By measuring the height of the cylinders you can also control the accuracy of your steppers in Z.

Diameter:

• D = 30 mm h= 5 mm
• D = 25 mm h= 10 mm
• D = 20 mm h= 15 mm
• D = 15 mm h= 20 mm
• D = 10 mm h= 25 mm
• D = 5 mm h= 30 mm

Printing Conditions:

• Nozzle Size : 0.4
• Layer Height : 0.2
• Initial Layer Height : 0.2
• Line Width : 0.4
• Wall Line Count : 2
• Top/Bottom Thickness : 0.8 mm
• Infill Density : 8% (linear)

Estimated printing Time = 30min ~ 45min