3d Mask - SLUHN and Filament Innovations

Model Description

Model ID 3DPX-013321Category Labware & DevicesDevice Use Safety and Personal Protective EquipmentKeyword(s) 3d Mask, COVID19, PPE, HEPA filter, FDM, Sterilize, TPC, PETG, TPUSt. Luke's University Health Network and Filament Innovations worked together to create a 3D Printed mask to help with the supply shortage, which can be sterilized and re-used (minus the filter). These masks do require the use of a filter which the person printing has to supply and the filter should be oversized when it is cut to help seal the mouth area.Filament: TPC/TPU at 95A Shore Hardness is suggested as a first choice and PETG as a second choice.Assembly: There are four parts to the full mask assembly (in order) -3D Printed mouth area / guard - this houses the filter and the laser cut acrylic piece and press fits onto either the Medium or Large maskLaser cut acrylic plate at 1/8 (3.2mm) thickness. Note* an STL is included of a version that can be printed if a laser cutter is not available. HEPA Filter. 3D Printed Mask in either Medium or Large.Notes: The 3D Printed mouth area/guard is printed using one perimeter and 100% infill. The 3D Printed mask is a split process which prints the bottom, square area using one perimeter and 100% infill, and then the facial area itself is printed using spiral vase mode. Spiral vase mode is needed as it eliminates retraction, multiple perimeters, and creates a seamless print, which when combined with a 0.9mm nozzle, would generate a truly solid print. We suggest 1.50mm single wall pass when you start to print the area with the face. The spiral vase mode sequence should start at the 7.13mm layer height of either the Large or Medium model. Simplify3D is the only tested and suggest slicer to use for this. This method of printing would yield the best chance, in our opinion, of creating an airtight 3D Print using FDM technology. The larger nozzle (0.9mm) and larger layer height (0.4mm) appears to increase bonding in the Z axis, making a stronger and more durable print. When assembled, using flexible filament, the TPC acts as a gasket; creating an air-tight assembly around the mouth and nose and ensure that ensuring that the wearer can breathe through the mask .TPC/TPU is the recommended filament.Users have passed a FIT test using Bitrex or Saccharine. Masks can be sterilized and reused.3D Modeling/CAD Software Fusion 360 / Simplify3DPrinter Make/Model BFP-ICARUS-TP High Flow FDM 3d PrinterPrint Units MMScale At Given Print Units 1:1Printer-specific Build Instructions Specific material TPC (or PETG)Number of prints per build 4Build time 3 hoursPre- and Postprocessing Instructions Sand edges with 80grit and then 180 grit for smoothingElastic 1/4 inch recommended (latex free) Attribution Instructions michaelg@filamentinnovations.comfilamentinnovations.commegan.augustine@sluhn.orgReviewer Notes This device is a general purpose face mask intended for use in the community and is not suitable for use by a healthcare professional or in a healthcare facility or environment, as described in FDA Guidance Enforcement Policy for Face Masks and Respirators During the Coronavirus Disease (COVID-19) Public Health Emergency, Section V B. This device has not been tested to assess the out-gassing limits of the material or their corresponding health effects.*This model sourced with permission from the NIH 3D Print Exchange*


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TDP Category Type Filename Size
General Instructions application/pdf images.pdf 2.16 MB
Native CAD Grill.dxf 198.31 KB
STL File Cover_6.stl 38.75 KB
Blender-generated-x3d Cover_6.stl60c0bb3b5ee6c.x3d 24.65 KB
STL File Large_0.STL 34.85 KB
STL File Medium_0.stl 5.72 MB
STL File NoLogoGrill_0.stl 3.10 MB


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