Hummm, worried about these "toxic" fumes from the 3D printer and he was soldering without a fume extractor. lol
There is no doubt that there are fumes and particles, but with cooling fans blowing that all around I don't see how this little Vac tube is going to get 99% (I think that is an average Infomercial statistic). Maybe in a closed environment. More gimmick than essential IMO.
If they can increase the vacuum enough to double as part cooling then they might have something a bit more viable, and probably would filter 99%
They also did not show results from a control group, i.e. rooms and offices NOT using a Printer. How many of these "toxins" are naturally in the air?
Looking up the compounds listed, they really aren't all that scary.
Styrene ABS is stable to decomposition under normal use and polymer processing conditions with exposure to carcinogens well below workplace exposure limits. However, at higher temperatures (400 °C) ABS can decompose into its constituents: butadiene (carcinogenic to humans), acrylonitrile (possibly carcinogenic to humans), and styrene. Concerns have been raised regarding airborne ultrafine particle (UFP) concentrations generated while printing with ABS, as UFPs have been linked with adverse health effects.
Ethylbenzene The acute toxicity of ethylbenzene is low, with an LD50 of about 4 grams per kilogram of body weight. The longer term toxicity and carcinogenicity is ambiguous. Eye and throat sensitivity can occur when high level exposure to ethylbenzene in the air occurs. At higher level exposure, ethylbenzene can cause dizziness. Once inside the body, ethylbenzene biodegrades to 1-phenylethanol, acetophenone, phenylglyoxylic acid, mandelic acid, benzoic acid and hippuric acid.
As of September 2007, the United States Environmental Protection Agency (EPA) determined that drinking water with concentration of 30 parts per million (ppm) for one day or 3 ppm for ten days is not expected to have any adverse effect in children. Lifetime exposure of 0.7 ppm ethylbenzene is not expected to have any adverse effect either. The U.S. Occupational Safety and Health Administration (OSHA) limits exposure to workers to an average 100 ppm for an 8-hour work day, a 40-hour workweek.
Ethylbenzene is classified as a possible carcinogen by the International Agency for Research on Cancer (IARC) however, the EPA has not determined ethylbenzene to be a carcinogen. The National Toxicology Program conducted an inhalation study in rats and mice. Exposure to ethylbenzene resulted in an increased incidence of kidney and testicular tumors in male rats, and trends of increased kidney tumors in female rats, lung tumors in male mice, and liver tumors in female mice.
As for all organic compounds, ethylbenzene vapors form an explosive mixture with air. When transporting ethylbenzene, it is classified as a flammable liquid in class 3, Packing Group II.
Caprolactam Caprolactam is an irritant and is mildly toxic, with an LD50 of 1.1 g/kg (rat, oral). In 1991, it was included on the list of hazardous air pollutants by the U.S. Clean Air Act of 1990. It was subsequently removed from the list in 1996. In water, caprolactam hydrolyzes to aminocaproic acid, which is used medicinally.
As of 2016 caprolactam had the unusual status of being the only chemical in the International Agency for Research on Cancer's lowest hazard category, Group 4: "probably not carcinogenic to humans".
Currently, there is no official permissible exposure limit set for workers handling caprolactam in the United States. The recommended exposure limit is set at 1 mg/m3 over an eight-hour work shift for caprolactam dusts and vapors. The short-term exposure limit is set at 3 mg/m3 for caprolactam dusts and vapors.
Couldn't find any health info on the last one.
Last Edit: Mar 16, 2017 6:57:33 GMT -5 by BeeAmaker
Some things are meant to be closed. Your mind isn't one of them.