SCP warning signs
thingiverse
I reverse engineered a semi parametrized versions of the 173 danger sign and a few of the others from https://www.redbubble.com/people/narshero/explore?page=1&sortOrder=recent if you have access to solidworks, you can use the file properties to easily change the text on any of these signs! I plan on making the pictograms as separate tiles, and I'm still working on them, but I'm happy with this implementation. they are 27mm square.
Download Model from thingiverse
With this file you will be able to print SCP warning signs 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 SCP warning signs.