Breathing Mask cast container

This are the parts that can be used to cast the breathing mask shown in

https://www.youtube.com/watch?v=77PgC3kMrFs

Source file
https://grabcad.com/library/breathing-mask-with-screw-in-filters-version-2-1

By casting it in resin, it does not have pores inside, as it is completely solid.

Make the cast from ABS, as it need some post processing (cutting sandpapering) to make it fit nicely.

First print all parts (screw * 2)

Then make the front and back part to fit nicely in the back plate
Then screw the front, mask and back together with the two big screws
Then bolt the complete set into the backplate

Cast a silicone mold. I used dental silicone.

After curing extract the backplate and cut out the silicone mold, split it.
Remove the master mask
Leave the silicone on the front and back, or glue it.

Apply mold release and place all back together minus the master

Now you are ready to make a resin cast

V3
Back plate and front mask adjusted to be able to bol