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soldering fume extractor?

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PekkaNF:
All the reason to avoid lead free solder.

There are pretty good and thick activated carbon filters available and mat filters by metre.

How about a little "paint booth" type spray wall type filter, something like 500*150 mm, covered with a dust filter mat (to keep the expensive carbon filter from cloggin) then carbon mat filter right behind it, 20-50w duct fan and at fan output a vacuum cleaner HEPA-filter? Exhaust straight up?

This would not create much draft, but would filter the residue taht would othervise linger.

I should experiment with a "local" fume extraction, something like 38-60 mm flexible duct type + centrifugal fan contraption....

Pekka

hermetic:
With all due respect to Weller, whose equipment I have used for years, that link is advertising! traditional solder was a variation of amounts of lead, tin, antimony, and bismuth. this has no lead or bismuth, and they are saying it is worse? How much soldering are you going to be doing. As already said above, cooker hood filters are activated charcoal and activated charcoal, despite what the manufacturers say is pretty much all the same, and a universal filtering medium for water air, gasses, virtually everything, I do not replace the filters in my cooker hood, I just put them in the dishwasher. Put a good cooker hood over your work space, or wear a carbon filter mask if you are worried about it The other day I was in Plumbcentre, and bumped into a guy from years back who has been plumbing since he was 14, and now he's coming up for eighty and still working! and all that time or most of it using lead. Remember food is stored in cans that are coated with tin, or at least they used to be, now they use a plastic laquer and we are all suffering from low sperm count because of the bisphenol in the plastics.

PekkaNF:
I have some experinece on cooker hood filters. I have washable mesh "grease" filter and big mat charcoal filter atop of i. Works great on grase and such. Not sure if it works on smaller particles though.

I discovered trashbag method used to measure small fan flow. Basically you measure how many seconds it takes to fill an empty trash bag.

I used that on small axial duct fan. Made a setup and measured it without any filter. about 6,8 sec. Then with a big stationary vacuum cleaner exhaust filter (big yellow/orange flanges canster type. It it slowed dow the fill rate about a second, big coarse AC matt offered slightly less resitance. No problem there.

Then I checked the fan with an vacuum cleaner exhaust fileters, rating was HEPA 12, another brand new and other one rather dirty, used about a year....both of them had way too much back pressure, the fan stalled and did not fill the trash bag even on 20 seconds.... Those filters would bee good eneough, but would need completely different fan.

That's for today.

Pekka

hermetic:
I like the "trash bag" idea! Must remember that one!
Phil

PK:
Here's one I prepared earlier. There's a plenum chamber at the top and a row of holes at the back of the 'ceiling' with some filter foam over them. But mostly it just vents out the main extraction chimney (same system used for the laser cutters and reflow oven). I'm sure the roof is littered with bird carcasses by now....
The front cover slides up some PVC trim strips and can be pinned into a couple of positions. 
Before we had this, we tried all the 'point extraction' options. The only ones that removed enough fumes to prevent headaches were so noisy and cumbersome that they were impractical.
This is just some MDF, acrylic sheet and a lick of paint and removes 100% of the fumes.

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