hazmail

Dust Buster

8 posts in this topic


 

I have been fighting that perennial lure builders dust problem for what seems like forever, and about a year back I thought I had it beat with a double 'cyclone' filter and a third automotive style filter in the vacuum cleaner, but NO, I was still blowing clods of dust from my more than adequate nose.


 


I disc sand all my blanks (so these are semi "hand carved" ) , this dust from the sander is very fine (like talc), so in the past 3 months I have been taking a different tack and have installed a ducted system on my sander and band saw (with 'blast gates'), where the dust is sucked away through 10cm ducts by an old (and large) evaporative cooler fan, which I have been hoarding for 'that special job' for the past 25 years.


 


These cooler fans spin pretty slow, so through a 10cm (4”) duct the 'suck' is pretty low but the volume is high, and is enough to get the finest dust away without the whining noise of a vacuum cleaner or 'cyclonic' dust extractor, just a low HUMMMM in your ears, you can even hear the phone ring.


 

With this setup I was getting all the dust away, but because it was so fine, again I was eventually getting it back with wind / fan draft etc.


 


So here is my solution , it seems to work well so far – I figured if I could just wet the dust it would drop and stick to the concrete, and when it dried it blew back at me ---- so I added a 'condenser' to catch the excess 'wet' dust which then drips into a tray, it uses about 10 L (5,5 Gal) of water / hour and so far no more 'BOOGIES' in the nose.


 

I was thinking larger ducting would be better but stuck with the10cm (4”) because - 1. I don't have the space and- 2. I think the air speed may be too high for the small amount of mister water to 'wet' the dust -


 

Air speed = in 8m/s—out 1.5m/s -- (OR --In 25' /sec ---- Out 5'/sec) –Reduced flow out is due to large exhaust duct = 34cm (apx
14”)


I have been using this for about 2 months now and it eats that deadly fine dust, just throw it on the garden when you have finished.

 

If I had the space I would use 15 Cm duct (6”) to increase the in flow, for saws etc.


 

Pete

 

Ducting

Dust 001.JPG

 

I used a lot of irrigation bits

Dust 01.JPG

 

Micro Spray head/nozzles( B) and collected dust (w/o condenser)

Dust 3.JPG

 

Dust trapped in water before condenser

Dust 4.JPG

 

With condenser screen

Dust 05.JPG

 

Dust after fitting condenser screen

Dust 6.JPG

 

Dry dust in screen

Dust 7.JPG


 

Dust 001.JPG

Dust 01.JPG

Dust 3.JPG

Dust 4.JPG

Dust 05.JPG

Dust 6.JPG

Dust 7.JPG

Dust 001.JPG

Dust 01.JPG

Dust 3.JPG

Dust 4.JPG

Dust 05.JPG

Dust 6.JPG

Dust 7.JPG

Dust 001.JPG

Dust 01.JPG

Dust 3.JPG

Dust 4.JPG

Dust 05.JPG

Dust 6.JPG

Dust 7.JPG

Dust 001.JPG

Dust 01.JPG

Dust 3.JPG

Dust 4.JPG

Dust 05.JPG

Dust 6.JPG

Dust 7.JPG

Dust 001.JPG

Dust 01.JPG

Dust 3.JPG

Dust 4.JPG

Dust 05.JPG

Dust 6.JPG

Dust 7.JPG

Dust 001.JPG

Dust 01.JPG

Dust 3.JPG

Dust 4.JPG

Dust 05.JPG

Dust 6.JPG

Dust 7.JPG

Dust 001.JPG

Dust 01.JPG

Dust 3.JPG

Dust 4.JPG

Dust 05.JPG

Dust 6.JPG

Dust 7.JPG

post-15507-0-81338400-1364720742_thumb.jpg

post-15507-0-96907500-1364720771_thumb.jpg

post-15507-0-91373700-1364720787_thumb.jpg

post-15507-0-90616600-1364720804_thumb.jpg

post-15507-0-96069200-1364720819_thumb.jpg

post-15507-0-93765000-1364720832_thumb.jpg

post-15507-0-89751500-1364721515_thumb.jpg

Edited by hazmail
1 person likes this

Share this post


Link to post
Share on other sites

Great set up Hazmail it has to be way better on the lungs

Is the condenser just connected strait to the tap ? To keep a constant flow

Thanks

Share this post


Link to post
Share on other sites

No mate the air/ sanding dust mix passes out through the yellow duct where there are 8 micro water spray nozzles, the water vapour coming out of these nozzles saturates any dust passing through it, it then condenses in the gauze (water and dust) and drops into the bin below- should have explained this better--

If you look closely at the pics (without the gauze) you can see the water vapour/spray exiting the duct.

Pete

1 person likes this

Share this post


Link to post
Share on other sites

Thanks Dave / Ben, sometimes you play with an idea for so long, you assume everyone else is on the same plane, and you don't have to explain anything :lolhuh:   :lolhuh:  :? .  Now back to that 'test tank', still looking for a suitable tank 8O .

Pete

Share this post


Link to post
Share on other sites

Not a bad idea I like the way you think like a mad scientist with just the right amount of common sense.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now