Igor Babić 28 Mar, 2020 08:09 PM Hi guys,I created an attachment to be used on this newly popular face mask model.It enables you to use standard commercial gas mask filters (eurfilter).Feel free to check it out and share your thoughts.Cheers. Grabcad model Face Mask with standard filter thread attachment I saw that this face mask model was popular on GrabCad so I created an replaceable attachment as to enable its users to use standard EUROfilters used on comercial gas masks with the standard knuckle thread (round thread) rd40x1/7" EN 148-1 (rd40x1/6") as per DIN 405. The attachment has 2 parts th...