The Tool
This is a simple “hand float” also called a finishing trowel*. There are two versions, just with different handles for personal preference.
It's for spreading out or evening loose material like gravel, dirt, or sand. I've successfully used this for spreading out the base material under paver stones and retaining walls (small back yard projects, nothing major).
Floats are also used for smoothing the surface of fresh concrete, but I haven't tested this scenario, and it's probably better handled by metal versions.
* to a professional, those two names might actually mean different tools, but this print is definitely not a professional tool. It's just a yardwork spatula.
Size & Scaling
The design should be able to scale up or down, but scaling only X/Y without Z might create overhangs that are difficult to print.
A1 Mini: the 200mm length is slightly too large for the A1 Mini, but this should fit if scaled down to 85-90%.
Print Settings
Both print profiles have these settings:
0.16mm High Quality prints slowly to focus on quality. If you just need a quick tool ASAP, then 0.16mm Optimal (or even 0.20mm Standard) with 3 walls should work, but the curves of the handles will likely be poor quality.
Remix
Feel free to remix the design - I'd love to see others' improvements on it. The downloads include .step files.