I have been reading and commenting recently about shop air filtration and the concern for it. My decision to write this was to give the LJ’s community some facts about air filtration. Let me start with my knowledge base. I started my own air filtration business after my son was diagnosed with severe asthma at the age of 18 months. He is now 20 years old. My wife (an RN) and I immersed our selves into learning as mush as we could to make his breathing easier. We attended numerous seminar...
This is a basic explanation of what an ERV or an air exchanger is and how it might be used in a woodworking environment. What happens is it takes a portion of the inside air and exhausts it outside. At the same time it takes the outside air and brings it in. But, while doing that it takes the energy (heat or A/C) from the inside air and either warms or cools the incoming outside air, but, without mixing the two. So you are not bringing back in the bad inside air but transferring it’s e...
I planned on buying one of these, but I would rather spend the money on tools that directly impact the quality of my projects. I built this using an attic fan that I was given, some left over wood and a scrap piece of extension cord. I purchased the furnace filters (there are 3 of them in different MERV ratings), the hinges, the clasp, the electrical switch and box. The only thing i need to do is build the blade guard on the exhaust side, add some eyes for hanging and then figure out whe...
Well, it all started out with a trip to buy an air cleaner off of craig’s list some time ago. I saw a used Jet AFS-1000B for sale for about $150. After checking out the spec’s, I thought, gee, this would work great, 30×24x12, that’s not too big, I can find a place for it…. Drove about 1.5 hours round trip to discover that hey 30×24x12 is actually too BIG! I imagined myself hanging this thing near the step down that I have entering my garage and knocking mysel...
Dungeon to Lair: That's the plan at least... #7: Breathing easier, as I save the world!!! (UPDATE! 2/26/13)
UPDATE: 2/26/13Install pictures in POST # 21Additional Filter relocation info/pictures in BLOG # 21, of this series! Greetings All, Welcome to my WORKSHOP! I CAN say that now, as I am able to work in it. I haven’t really made progress toward organization or efficiency, which makes the work I do do that much more difficult (hee hee, I said do do, in my best Butthead voice ). In my previous two blog entries, I had cut the 3/4” ply for my air cleaner (A. C.) & relocated ...
As winter comes up on the horizon I will be doing most of my work with the garage closed. That will make my dust problems even worse. I have had Asthma all of my life. It improved as I reached adulthood but probably not as much as it would have if I had not been smoking a pack a day for 15 years. Hey if you drank a fifth or two of Vodka a day you would smoke too! LOL All I can say for that is my 7 year old son got me to stop smoking last Christmas by telling me not to bother coming back in...
Following many entries by other lumber jocks, I purchased an “on sale” box fan and two filters. I made a small frame to hold the filters and attached them to the $14 fan. Other’s seem to think that this rig provided adequate filtration. We’ll see. If it works even semi well it will be worth it.
My “new” air cleaner has now reached a state of completion. I started with a free squirrel cage fan from an old A/C unit. Then I constructed a box to house it and affixed two 16×25 electrostatic MERV 11 filters, one on each side. I am not sure how long the MERV 11 filters will last in a shop environment. From what I have read a higher MERV would be desirable, but those seem to have such a short useful life that they are not practical. Each of the MERV 11 filters has ahe...
In a previous blog entry, I started to document the building of my ambient air cleaner. I didn’t do a blog on it’s completion and the WW gods spited me for it….. I initially installed 2 pre-filters (intake side) and a third MERV 12 filter on the exhaust side. After building the air cleaner, I learned that this arrangement is not recommended. I found out why! It seams that the filter, placed after the squirrel cage blower, puts back pressure on the fan and causes the motor...
Recently used the Demo Air Net “Monster” size in a Demolition of a Pre 1900’s, 1600 sq ft room w/13ft ceilings and damn if the thing didn’t keep our work area cleaner than ever. Going to try the Monster next during cutting open the roof to accept a series of TJI members. Its weird how it seems to collect at 6 o clock, not all around the interior of the bag. I have frankly been very impressed. Seems the pressure inside the bag is maintained to keep the bag inflated, yet...
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