This face shield is an improved version of model 3DPX-013421. It has been modified for more secure shield connection, more secure fastener connection, increased wearer comfort, and to suit two additional hole punch standards. It is also provided in a non-ventilated version which increases safety in certain settings. All details and illustrated assembly instructions can be found on www.CADEnvy.com, but an overview is provided below.

Bill of Materials for one face shield:

• 1x face shield holder
• 1x clear shield
• 1x rubber band or other fastener

Needed equipment:

• 3D printer with minimum bed size ~200 mm x ~190 mm.
• Paper hole punch. Note that there are three different versions of the visor holder:
  – For a 2-hole punch with 80 mm spacing (standard in New Zealand, Australia and other countries).
  – For a 3-hole punch with 4.25″ (107.95 mm) hole spacing (standard in the USA).
  – For a 4-hole punch with 21-70-21 mm spacing (standard in Sweden and other countries).

Print the visor holder:

• Download the files.
• Select the correct file for the hole punch you have available. Each design comes in four versions – with and without instructive text, and with and without ventilation. The text gives the users assembly instructions, but might be more difficult to disinfect. Ventilation will prevent the shield from fogging, but might not be accepted in all situations.
• Print the initial layer (the very first layer) and slow or very slow speed (~25 mm/s) to ensure good adhesion of the thin parts. The rest can be printed on high speed (90 mm/s appears to be the limit in my Prusa i3MK2S; your printer may be capable of higher or lower speed).
• Use any type of plastic 3D printing filament. PLA+, PETG or ABS recommended, but regular PLA works fine as well.
• Print without support or brim.

Make the shield – 2-hole punch version (New Zealand, Australia, and other countries):

• The visor holder is designed to use an A4 or letter sized clear spiral binding cover for the shield. However, you can use pretty much any clear plastics (more below). (I bought my binding covers from nzbinding.co.nz).
  Gently fold the sheet and make a tiny mark or tiny crease at the edge to mark the center of the long side.
• Place the punch so one hole lines up with the center mark you just made. Punch through the plastics.
• Move the punch and line one hole up with the already existing center hole. Punch again. The result will be three holes.
• Round the bottom corners to avoid the shield catching on clothing.
• Don’t have access to A4 or Letter sized plastic sheets? The straight section of a clear, straight 2 liter soda bottle will likely work well (I don’t have one on hand, so I can’t try). Cut out a rectangle from the straight section that is approximately the size of A4 ( 210 × 297 millimeters or 8.27 × 11.69 inches) or letter (8.5 x 11 inches or 215.9 x 279.4 mm). Then follow the same steps as for flat sheet above.

Make the shield – 3-hole punch version (USA and other countries):

• The visor holder is designed to use an A4 or Letter sized clear spiral binding cover for the shield. However, you can use pretty much any clear plastics (more below).
• Gently fold the sheet and make a tiny mark or tiny crease at the edge to mark the center of the long side.
• Punch holes in the long side, making sure the center hole is centered on the long side of the sheet.
• Round the bottom corners to avoid the shield catching on clothing.
• Don’t have access to A4 or Letter sized plastic sheets? The straight section of a clear, straight 2 liter soda bottle will likely work well (I don’t have one on hand, so I can’t try). Cut out a rectangle from the straight section that is approximately the size of A4 ( 210 × 297 millimeters or 8.27 × 11.69 inches) or letter (8.5 x 11 inches or 215.9 x 279.4 mm). Then follow the same steps as for flat sheet above.

Make the shield – 4-hole punch version (Sweden and other countries):

• Follow the instructions for the 2-hole version, but instead of 3 holes you will end up with 7 holes.
• If you use a thicker plastics, it might be difficult or impossible to insert all 7 hooks. In that case, consider cutting off some of the hooks with pliers/tongs.

Assembly:

• Hold the visor holder with the curved forehead support upwards.
• Start from the left-hand side and thread the hook through the hole. Be gentle as the plastic shield is not very strong.
• Continue with the other hooks.
• Carefully insert the ends of the sheet under the tabs on the sides.
• Add a ruber band (or elastic hair tie) of suitable size to the back. If you don’t have a rubber band, any type of string will also work. Photos below show three different varieties.
• If you find the clear shield to be too loose or wobbly on the holder, secure it with a piece of tape.
• You can add soft padding to the forehead support if desired. “Weatherstrip”, foam seal, or other soft material might work well (but might make sterilization more difficult).

Background:

The face shield is an improved version of the face shield released by 3D printer manufacturer Stratasys (3DPX-013421). It was re-CADed in Autodesk Inventor using a screenshot of the outline; the original CAD file was not used. The following features have been added or modified:

• Two additional designs for 2-hole and 4-hole punches.
• Clips added to hold the shield better in place.
• All edges are chamfered or rounded to increase comfort for the user.
• Instructions for use and assembly are added on the printed part.
• Non-ventilated version added for higher level of safety.
• Version with an eyelet instead of just a hook for the rubber band makes the fastener connection more secure.

The files and instructions here are provided “AS IS”, in an effort to help with the urgent need for these items. Users of this Item must determine the appropriateness and use of this Item, whether there are any federal or State regulatory requirements for use of this Item, and for informing other users of these responsibilities.