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Yet another easy printable and usable mask.
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Why will I not design this mask for printing in PLA or PETG?!
I get quite a few requests to convert this design for printing in PLA or PETG. Sorry, but I am not going to do that, and this is why:
In my experience, PLA and PETG are TOO DANGEROUS to put on your face. If a PLA or PETG mask cracks, especially when printed as a light weight/thin wall, it will cut your face like a knife. It may not be happen on the first day, but it will happen one day, maybe while you are talking, and it will be sudden. Thin walled PLA and PETG will fatigue much faster than TPU, being washed, dragged and pulled in daily use. Maybe something hits your mask while you are wearing it, and it splits or shatters.
Let's see poor Kevin in the following videos:
For Part 1 in PLA please go here: https://youtu.be/ErP28uP4mVI
For Part 2 in PLA please go here: https://youtu.be/LlN01EW9ORI
For Part 3 in ABS please…

Casey Jones mask in two parts.
As seen here: https://www.instagram.com/p/BMO0HKegia2/
Optimized for 3d printing from the original file found here: http://www.wamungo.com/PrintModel/Detail/TMNT-Casey-Jones-Mask-547e373b89702b160cbc8d6c

Update29/04/2020
I have uploaded the basic sketch of the mask for use in fusion360. This is just the basic simple sketch.
31/03/2020
If you are looking for a hard shell design I have this one. It can be printed in both PLA and TPU combined.https://www.thingiverse.com/thing:4243998
17/03/2020 - 5
The different sized nose pieces were not a good option. I spent some time and came up with a small and large version, depending on which size mask you choose. The holes of these should be a little easier to fit over the pegs. Bending them is easy if you place them between your fingers and place the centre under some running hot water straight from the tap. As it softens just squeeze the two sides together to the desired spacing. You can make them tight as they will spread apart.
17/03/2020 - 4
I uploaded a slightly altered valve (Valve v3) that is a little thicker and a slightly larger diameter. I find that this model prints a little better than the original and provides a slightly better overlap. I will leave the older…

... my Bowden setup struggled with the snap on buttons on the original design.
=> I redesigned it fully flat with hooks.
Two sizes: for standard 17cm masks as well as 14cm "kid size" masks.
As always: use responsibly at your own risk!
Check on this for additional comfort - at least as long as you are wearing glasses along with your mask:https://www.thingiverse.com/thing:4599585