Grattoir silicone
thingiverse
Humans craft two grinders to form silicone joints. Sold on Aliexpress: https://fr.aliexpress.com/item/4Pcs-set-Home-Window-Glass-Cleaning-Tools-Joint-Sealant-Clean-Scraper-Silicone-Grout-Caulk-Tool-Set/32814585168.html With the Fusion files to convert them.
Download Model from thingiverse
With this file you will be able to print Grattoir silicone 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 Grattoir silicone.