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As a guy who has lost a fair amount of brain cells to paint and varnish vapors I know better than most that many projects aren't properly ventilated. (Yes I called them paint and varnish fumes in the title because that's what folks search for. Fumes are heated solid particles - think burning metal. Vapors are gaseous. I haven't lost all my brain cells.) That being said, there are some jobs that even I know have to have a fresh air source. Respirators are great, but in an environment wit …

Hooray hooray it’s respirator day! There are so many to thank, air borne pathogens, asbestos and lead, don’t forget those sneaky little unseen particulates, and especially the CDC for all their hard work in making this happen. Without them, well, the N95 face mask would be just another underutilized tool in the fight to keep people safe and healthy. I’m sure that if Superman ever needed a mask (not for breathing or even a disguise, mind you. Those glasses and hairstyle are clearly a genius …

We get two questions about respirators more often than all other questions combined. People want to know what size mask to order, and they want to know how they can be sure the mask is fitting properly. Because these are such common questions, you'd think we'd have a quick and easy answer for each of them. But each question has some variables, and it's not so easy. Here's what you need to know to make sure your respirator mask fits correctly. For this discussion we will limit the sco …

First of all, a dust mask is has a single strap that goes over the head and provides very little protection from particles and debris in the air. They're also called nuisance dust masks and they're best used for mild applications like leaf blowing and general household dust protection. Dust masks just don't provide a good face seal and they protect about as well as nose hair, which is to say not that well. Replace them when they look dirty or after about 8 hours of wear. Honestly they're n …

First of all, a dust mask is has a single strap that goes over the head and provides very little protection from particles and debris in the air. They're also called nuisance dust masks and they're best used for mild applications like leaf blowing and general household dust protection. Dust masks just don't provide a good face seal and they protect about as well as nose hair, which is to say not that well. Replace them when they look dirty or after about 8 hours of wear. Honestly they're n …

A customer recently wrote to us asking about protection from lead dust. Here is his question, and our response: I have been melting lead wheel weights as well as other sources of lead for fishing weights (bouncing Betty's) as small as 1 oz and as big as 2 #'s – also round downrigger weights from 1#, 2# ,4#, 5#, 7#, & 10#, and 10,12, and 15# downrigger weights with keels. I have also made triangular anchors from 4# and as large as 40#. as well as tons of #7 & #8 shot for trap shoot …

We have lots of folks who call us asking which is the correct 3M respirator cartridge for their job. It's not always easy to know. 3M alone has more than 20 cartridges and filters for different types of work. We'd like to start breaking down the different uses each of these products, and we will start with some of the most popular. All of the cartridges we'll discuss are filled with activated charcoal. Each has slightly different characteristics, so let's discuss which solution is best …

The Bay Area abounds with many wonderful old things. Vintage boats and Victorian era houses are two that often end up benefiting from a product called penetrating epoxy. For the owners of old houses, this epoxy seeps deep into damaged or rotten wood creating incredible strength while eliminating the possibility of future rot on gingerbread, bay windows, dentils, and lentils. It is seen as almost a miracle in an age when traditional woodworking crafts have largely disappeared. For classic boat …

We've all heard tests of the emergency broadcast system over the TV and radio. The long monotone and subsequent beeps of digital information being transmitted are generally followed by an announcement that this was a test ("This is only a test"). Last night as I listened to the baseball game, I heard my first real emergency broadcast. The announcement directed residents of several counties in the Bay Area, including mine, to shelter in place. The Chevron refinery in Richmond, one of the …