ProShield (1477 Rev6)
Based on a design released by Prusa’, a 3D printer company in the Czech Republic, our version has no openings in the strap that goes across the forehead. This provides greater comfort and does not leave a set of impressions on your forehead. The shield slides into a slot on the 3D printed part (in red) so no holes need to be added to the clear shield for mounting. The headband is a 3D printed part made of PLA, ABS, or PETG. The face shield is 0.034″ PET plastic. The elastic strap can be made by looping rubber bands or hair ties together. The top of the face shield is open. The 3D printing takes between two and three hours per face shield. Our current capacity is about 20 per day. Our cost for materials is between $2 and $5.
Manta Ray Face Shield
This is a remix by Prusa’ of a design by 3DVerkstan in Sweden. The face shield is thinner and more flexible than the ProShield shown above, but more rigid than versions using a sheet protector or transparency film. These are easy to ship and take about half the time of the ProShield to print.
TX/RX Labs Shield
When the Houston maker space TX/RX Labs switch from 3D printing to injection molding, we received some of their 3D printed stock. These have the same shield as the Manta Ray design but the headband is a more like flexible version of the ProShield headband. Since we have these already in stock, we can ship these immediately. Once we run out, they will be removed from our request form.
RobotShield (148 Rev3)
This face shield was designed to be made with no 3D printed parts. We were using a waterjet at NEMA Enclosures in Houston, Texas to cut these. VEX Robotics in Greenville, TX is now stamping these out at a much higher rate, up to 250 per hour. It is made of the same plastic as the clear shield used in the 1477 ProShield. You may purchase these directly from VEX Robotics or request a donation at robotshields.com.
The CAD files for this design are also available on the VEX Robotics website.
Surgical Mask Ear Lobe Savers
Those pesky straps pulling on your ears all day long can get really annoying. We found this item, SMELS, that hooks to the elastic of a surgical mask to relieve that constant pulling and chafing caused by those straps. Simply indicate you are interested in receiving some of these and some will be included with your face shields. These are made from the last remnants of filament at the end of a spool. Waste not, want not.
Lots of designs available on Thingiverse but you can find this version at thingiverse.com/thing:4249113
HA-20 HEPA Box Fan
To help teachers combat COVID-19 at school, we designed the FA-20, a box fan pulling air through a HEPA furnace filter with a 13 MERV rating. You can find the CAD and more on GrabCAD at https://grabcad.com/library/fa-20-hbf-1. Total cost is under $100. We estimate it will turn over the air in a standard size classroom about six times per hour.
We used 1/8″-thick neoprene, adhesive-backed foam tape to create the seal around the openings. It might be helpful to have different thicknesses available to allow for variances introduced when cutting the plywood. The filter is held in place by suction. The fan can be turned to different orientations to get the best seal.
Future upgrades include a handle mounted to the plywood mid-section for carrying, elastic cord to hold the filter and fan in place, and 3D printed inserts to create a better seal for the fan. We recommend purchasing your fan and taking measurements to make sure you get the best seal. Our unit was designed to use a Lasko COOL Colors Box Fan (Model B20301, SKU 0 46013 45492 8). We purchased ours at WalMart.
Intubation Chamber (IB2000-ST)
This is Revision 3 of the IB2000-ST.
With the exception of the viewing panel, everything is at right angles to create a better seal. An earlier version is currently in use in labor and delivery at a local hospital. We also have a version with a PlumeSafe Smoke Evacuation System with an 18 hour HEPA filter that creates negative pressure inside the chamber and replaces the air about five time per minute. It has been approved by their BioMed section. If you would like more information about receiving an Intubation Chamber, please contact us at [email protected]. Our cost is about $400 for a chamber and an additional $500 for a used PlumeSafe unit. We ask for a donation to offset our cost for materials and shipping. The IB2000-ST ships flat and requires assembly. It can be delivered in the Houston area assembled. We will be posting a photo of a complete unit soon.