Customizable / Parametric rectangular measuring spoon for dish washing machine powder (.FCStd)

Introduction:
Are you frustrated by the absence of suitable measuring spoons for your dish washing machine powder?

Introducing our customizable measuring spoon, engineered to hold the precise volume you require.

Design using FreeCAD.

How-to-Use:
If you don't know weight per cubic centimeter of your dish washing machine powder,

 goto Part A.
Else 
goto Part B.

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Part A:
If you don't know weight per cubic centimeter of your dish washing machine powder.

1. Make a one cubic centimeter measuring spoon.
2. Weigh powder which in a spoon

Make a one cubic centimeter measuring spoon:
In FreeCAD Spreadsheet, change cell value.
fillingWeight = 1, weightPerCubicCentimeter=1.
Export to STL and print it. 
You have one cubic centimeter measuring spoon.

Weigh powder which in a spoon:
Use digital scale TARE feature or Place an empty spoon the scale and turn it on. 
The displayed weight will be zero.

Fill dish washing machine powder in spoon,
Place an filled spoon on the scale.

You got weight of one cubic centimeter of your dish washing machine powder.
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Part B:
Fill value in FreeCAD Spreadsheet weightPerCubicCentimeter cell.

Change Filling Weight and handleLength = 35 (mm).
Export to STL and print it.

Print Settings: 
The recommended print settings 
0.2 mm layer height profile with a 0.4 mm nozzle. 
0.18 mm layer height profile with a 0.6 mm nozzle. 
15% infill.
Tested with PLA.

Source of design inspiration:

ZeVeX - Customizable Measuring Spoon for Dietary Supplements (f3d)
https://www.printables.com/model/863147-customizable-measuring-spoon-for-dietary-supplemen