QuickPrint Face Mask Version 7

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This is the printable STL for the QuickPrint COVID-19 Mask Version 7 (Filter Material Polycarbonate 0.3 Micron). Please refer to the PDF for detailed instructions. The mask files are also completely free located on the NIH 3D Print Exchange at https://3dprint.nih.gov/discover/3DPX-013971. ATTENTION: YOU MUST PRINT THE MAIN BODY OF THE MASK IN TPU, AS WELL AS IN VASE MODE (WITH 2MM BRIM). This version includes the files for the optional face shield. The face shield should be cut out of a PETG film or Lexan sheet. Inventory of parts and printing/cutting: Hard Shell: Print in vase mode with a 1mm nozzle -- single wall @ 1.2 width and 0.4mm layer height in PETG or PLA. Face side down with no brim. Soft Shell: Print in vase mode 1mm nozzle -- single wall @ 1.2 width and 0.4mm layer height in TPU. Face side up with 2 birm lines for 2 layers (brim offset 0mm). Filter Housing: Print in vase mode 1mm nozzle -- single wall @ 1.2 width and 0.4mm layer height in PETG or PLA. Narrow end up with 2 birm lines for 2 layers (brim offset 0mm). Filter Cover: Print in normal mode 0.4 mm nozzle -- 0 top 2 side 0 bottom @ 0.48 mm width and 0.2 mm layer height in PLA or PETG. Print at 20% or less infill. Various Clips: Print in normal mode 0.4 mm nozzle -- 2 top 2 side 2 bottom @ 0.48 mm width and 0.2 mm layer height in PLA or PETG. (Optional) Face Shield: Cut from PETG/Lexan Sheet with a thickness no greater than 3.17mm. If cutting on CNC router/laser cutter you can leave tabs, which give a glue point in this version. I left tabs at 1.5mm thickness and then glued in the mask after production. IF you need any additional fabrication help feel free to email me at Josh@JoshHughes.Studio. If you have your print settings dialed in you should be able to print all pieces of this mask in about 47-65 minutes. The files for this print are also located on my website www.JoshHughes.Studio. If you are a medical official, and want to collaborate in the design process please feel free to reach out to me directly via email at Josh@JoshHughes.studio. Here is an article about the use of TPU with FDM here https://www.ncbi.nlm.nih.gov/pubmed/30961229 in medical equipment (if you are interested). The filter which attaches to the mask is a 700 series Roomba HEPA filter, though other filter materials may be used with this design by placing the filter material over the filter cover and inserting it into the connection port. If the intent is to use a flat filter substrate, ensure you adjust the x/y scale of the filter cover to the thickness of your filter material. PLEASE ENSURE that the 700 series Roomba HEPA filter is made from Polycarbonate (PC) and NOT FIBERGLASS. The filter that fits this mask is a HEPA Filter which is certified to filter particulate down to 0.3 micron. This is the same filtering requirements for the N95, P95, and R95 masks.