Trowel
thingiverse
I suggest going for larger sizes to get a more effective trowel, but my machine's table only offers 220mm, so I always opt for tools with sturdy handle designs. For lost PLA casting, I recommend a 10% infill ratio and black PLA - colourless PLA is even better if you can find it.
Download Model from thingiverse
With this file you will be able to print Trowel with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Trowel.