3M 603 FILTER ADAPTER to use FFP2 masks

thingiverse

This is a remix of the 3M 603 FILTER ADAPTER by vyrobca. It is the same but with built in support. For the original you need to print with support and, at least for me, it took some time remove the support properly. I added a small ring, which serves as support but is much easier and cleaner to remove. See picture. I am using it with a 3M 7502 half mask. I am using FFP2 mask as filter material. If you cut the mask in half, one mask is enough for two filters. Trim the edges, so it fits perfectly onto the adapter surface and use the following cover: https://www.thingiverse.com/thing:5222806 I am using it as a dust filter for wood working.