MNA-Big Face Shield-6 Peg-Brake Rotor Style

thingiverse

THIS DESIGN MUST BE PRINTED IN PETg AS PLA WILL FAIL This improved 6-peg version of Big Face Shield and Stacks--Brake Rotor Style is an upgrade to previous designs, offering enhanced functionality and user experience. Originally inspired by the "Face Shield Big Remix" designed by ICU nurse Matt Behning, this design has undergone significant improvements based on extensive testing and feedback. Huge thanks go out to ICU nurse Matt Behning for his tireless efforts in approving modifications and providing photos for reference. Additionally, Chad Schwartz deserves recognition for suggesting the tab concept and offering guidance throughout the redesign process. Two 1-inch wide rubber tourniquets are used to secure the shield onto the wearer's head, while a plastic sheet measuring 12 inches wide by at least 9.5 inches tall serves as the face shield. Files currently uploaded include stacks up to 10, but successful testing has only been achieved with an 8-stack configuration. Testing of higher stack configurations is ongoing, and it is recommended to use a brim when printing stacks above 8. Brake Rotor tabs must be removed before use, and these should be printed using only 0.4mm nozzles to ensure optimal tensile strength. Other nozzle sizes may result in shields that are rejected due to lack of structural integrity. Thanks for donating your printer's time to help make a difference! -Luke Swanson Use at your own risk. This design has not been tested or certified for medical use and is provided AS IS with no warranty expressed or implied. Below are the key improvements made to this design: -Converted to a 6-peg design, providing a secure back-pressure attachment for clear plastic shield material while maintaining ease of installation, similar to that used in the Prusa PRO. -Introduced new internal peg supports originating within the "brake rotor style" (BRS) stack gaps. This design tolerates layer shifts on lower frames while allowing subsequent upper frames and layers to print successfully, reducing travel time and eliminating stringing and weakness at former peg support columns. -Redesigned the farthest-back side posts into an elbow style that provides a secure fit of plastic shield material. -Increased peg size to better complement US hole punches and reduce vertical play of attached shields. -Shifting pegs slightly to more easily measure punch-hole centers when using US Custom measurements, as outlined in the template below. -Heightened rotor tabs to make room for the new peg support system and facilitate easier stack separation. -Altered rotor tab arrangement for improved ease of tab removal before final sanding. -Added mini BRS raft to fix flattened pegs on bottom layers/models, ensuring all models are printed with correctly formed pegs. This also reduces shield fails caused by inadequate bed adhesion. -Added "NOT FOR RESALE" lettering. -The net result of design changes results in equal time and filament for a stack of 4. -Center-to-center measurements are US Custom. Punch template produces ovals instead of circles, improving horizontal tolerances as well as overall shield security. A laser-printed matching template is coming soon. - Created a 3D-printed hole punch shield template to match the frame (requires a 6mm Swingline single punch), available at <https://www.thingiverse.com/thing:4536655>.