Hi TomR,
this looks like a much better design than what I did. What did you slice it with, and print?
thanks for alerting us to this.

John

i printed the straight from the box Montana Doc mask. Of course it didn't fit well. I think I can make a much better fit by varying the scale in three axes, not forgetting to also adjust the scale of the "grille." I fussed with the settings to print PETG but it still took 5 1/2 hours to print the ma...

Jeff, I should add that my choice of PETG is not for its efficacy, to use a medical term of art, but because it's what's in the printer and I have (finally) a setup which produces consistent quality. PLA could be a better choice. If they lock down St Petersburg, I may not be able to get back to the ...

It turns out that I can scale the mesh in all axes or symmetrically with Simplify3d. The website suggests this can be printed in 3 hours. best i can do is 6 using .2mm layers and PETG.

I don't think I'm going to make more than 2 of these things, so maybe that isn't a problem.

I don't think I'll bother with the mask referenced above. I don't like idea that it has to be warm molded to the face, and then glued and sealed if you don't want it to leak. I'm going to make this one tomorrow: https://longliveyoursmile.com/3d-printable-mask-for-covid-19/ I like the looks of it, al...

I've received offers from BangGood for N95 respirator masks at not-outrageous prices with 10 day delivery. I've had 100% good luck buying from them in the past, but mostly things where I understood exactly what I was going to get and had sufficiently controlled my expectations to cover minor disappo...

Well GWhite, that was one way to get a threaded rod.

Amazing. It would be really wonderful to learn how this happened.

"Here George, make them like this" George having forgotten to wear his eyeglasses that day.

I, too, seem to have found the problem with my bed not heating on start-up. I replaced both the bed and the Rambo assuming that the problem was one or the other and I didn't want to dice around with the time it would take to discover which. Problem returned. either with the LCD using the prepare pre...

What are you slicing with?