COVID Log: Difference between revisions
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**good seal between edges of mask and face | **good seal between edges of mask and face | ||
**Undisruptable supply of TPU filament for distributed production - need to start making it from pellets. It's expected that we have a PLA or PETg mask with rubber gasket, or entire mask of rubber for good fit. PETg + rubber is good for cleanability + fit. | **Undisruptable supply of TPU filament for distributed production - need to start making it from pellets. It's expected that we have a PLA or PETg mask with rubber gasket, or entire mask of rubber for good fit. PETg + rubber is good for cleanability + fit. | ||
*[[Open Source Ventilator]] - [[Ventilaid]] | |||
**Adapt it for sensors, humidifier, air heater, safety valves, and auto control | |||
**Probably can replace pneumatic cylinder with [[Universal Axis]] which can control stroke, velocity, acceleration fully | |||
*at [[Open Source Face Shield]] - identify the 1-minute build, 25 cent option: | *at [[Open Source Face Shield]] - identify the 1-minute build, 25 cent option: | ||
**Weather strip (Isaac model) with glued-on visor. | **Weather strip (Isaac model) with glued-on visor. | ||
**Identify bulk source of weatherstrip (10 cents a strip) | **Identify bulk source of weatherstrip (10 cents a strip) | ||
**Identify bulk source of low cost visor material (10 cents a sheet) | **Identify bulk source of low cost visor material (10 cents a sheet) | ||
*Otherwise, 3d print a hollow, square rubber gasket in lieu of weatherstrip, with 2x2x20 cm hollow simulated square tube for the - [[File:facemaskgasket.stl]]. 25 grams - [[File:facemaskgasket.png|300px]] | *Otherwise, 3d print a hollow, square rubber gasket in lieu of weatherstrip, with 2x2x20 cm hollow simulated square tube for the - [[File:facemaskgasket.stl]]. 25 grams - [[File:facemaskgasket.png|300px]] | ||
*One spool of TPU filament gets you 40 masks, so 50 cents per mask in TPU. | *One spool of TPU filament gets you 40 masks, so 50 cents per mask in TPU. | ||
*5 cents/mask in TPU with 1 ton MOQ TPU pellets turned to filament. | *5 cents/mask in TPU with 1 ton MOQ TPU pellets turned to filament. | ||
Latest revision as of 23:41, 25 March 2020
Wed Mar 25, 2020
Current action points:
- At Open Source Respirator - take best 3D printed candidate - but it requires 3 optimization:
- Supply-chain disruption-safe filter material source in bulk, minimum supply of 1000 or so
- good seal between edges of mask and face
- Undisruptable supply of TPU filament for distributed production - need to start making it from pellets. It's expected that we have a PLA or PETg mask with rubber gasket, or entire mask of rubber for good fit. PETg + rubber is good for cleanability + fit.
- Open Source Ventilator - Ventilaid
- Adapt it for sensors, humidifier, air heater, safety valves, and auto control
- Probably can replace pneumatic cylinder with Universal Axis which can control stroke, velocity, acceleration fully
- at Open Source Face Shield - identify the 1-minute build, 25 cent option:
- Weather strip (Isaac model) with glued-on visor.
- Identify bulk source of weatherstrip (10 cents a strip)
- Identify bulk source of low cost visor material (10 cents a sheet)
- Otherwise, 3d print a hollow, square rubber gasket in lieu of weatherstrip, with 2x2x20 cm hollow simulated square tube for the - File:Facemaskgasket.stl. 25 grams -
- One spool of TPU filament gets you 40 masks, so 50 cents per mask in TPU.
- 5 cents/mask in TPU with 1 ton MOQ TPU pellets turned to filament.
