maschera con filtro

thingiverse

Here is the rewritten text: A mask with a filter once printed proceed to print the spacer and cap that will be screwed onto the mask. Inside, you can insert cotton (a good filtering medium), or filters purchased from third parties. IMPORTANT: During assembly, epoxy resin will be needed to shape the mask to your face. After shaping, check for any gaps where air may leak through. If there are any gaps, it will have almost no effect. To create the mask, use TPU exclusively. For the cap and spacer, you can use materials of your choice.