On Jun 20, 5:56 pm, wrote:
On Jun 20, 6:20 am, Joe wrote:



On Wed, 18 Jun 2008 18:06:04 -0500, Kris Krieger
wrote:

Chemo the Clown wrote in
:

On Jun 18, 11:04 am, Kris Krieger wrote:
Hi, ALl, I was wondering whether anyone is familiar with air-
filtration/fume hood type systems suitble for a very small in-home
glassworking bench. Best would be somehting that coudl be lifted
onto
the
working surface during soldering/grinding (tho' I intend to do most
of my grinding outside, as I have a covered porch), then lifted off
and moved when I'm either scoring glass, or using the table for some
other purpose.

TIA!

- Kris

Hakko makes a good fume trap and if you have a way to vent the air
outside you could juririg a stove top exhaust. It's the fumes from the
flux that you need to vent away not from grinding unless you are
grinding dry.

Thanks, I'm looking up their info

((I'm trying to decide whether I should go for a fume hood or fume
collector, or whether I could get away with turning my Miele on and wiring
the nozzle to the desk (it has a HEPA filter and I can get either super-
filter bags, or HEPA bags for "double filtering"), or whether I should get
a window fan (pointed outdoors) and rig up a duct. Or maybe just get a
small folding table and chair and do it outside before the day heats up too
much ))

- Kris

One thing to consider is that HEPA stands for (more or less) "High
Efficiency Particulate Air" filter. The key word here is
"particulate". Although they are very good at trapping very tiny
particles, there is a lot of non-particulate stuff (fumes) that are
released during soldering. HEPA won't do squat about those.

Like Chemo noted, you need a fume trap (does Hakko make one big enough
for sg work? I only know of their electronics stations). A homemade
fume hood using a stove hood and venting *outside* would be much
better than any filtration system. Just extend the sides of the hood
down further towards your bench.

Of course, there are advantages for good air filtering as well, but
ridding a shop of fumes ain't one of them.

Joe

HEPA filters are great for filtering out dust and such but are pretty
much useless for removing aerosolled flux fumes. This can be easily
demonstrated by placing a piece of cloth or paper towel over the
exhaust - which will expediently dampen from the condensed flux.

Use filters to remove dust. Exhaust to outside to remove noxious
fumes.


Below is a link to the Hakko fume extractor. It explains the filters
used. These are the same type of filters that are used in the
Honeywell 17250 HEPA air cleaner that I liked to in my earlier post.


http://72.14.205.104/search?q=cache:...ient=firefox-a