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Forum topic by Chiefwoodworker posted 09-03-2009 01:56 PM 1078 views 1 time favorited 8 replies Add to Favorites Watch
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Chiefwoodworker

149 posts in 2838 days


09-03-2009 01:56 PM

If you have read my post Dust Collection Added To Shop ( http://lumberjocks.com/topics/9745 ), then you may be interested to know that it works. below is an updated picture after adding blast gates and hook ups.

For more detailed information see my blog page http://www.srww.com/blog/?p=736 .

-- Joe.....


8 replies so far

View DrCharles's profile

DrCharles

2 posts in 2674 days


#1 posted 09-03-2009 02:17 PM

There is a theoretical risk of explosion, but has anyone ever seen a reference to an explosion in a small shop such as this one? I can find no references to such an occurrence.

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Chiefwoodworker

149 posts in 2838 days


#2 posted 09-03-2009 02:38 PM

Check out a Fine Woodworking article in their 2001 Tools & Shop magazine, under Shop Safety – PVC Pipe Dangers Debunked. It is written by Rod Cole, a mathematician and scientist with help from another MIT professor who is an expert in the physics of lightning. The conclusion is just as DrCharles states. Though theoretically possible it is almost impossible in reality and there have been no reported occurrences. Further, he points out that you should not confuse static built up on the outside of the PVC with static on the inside, the latter being necessary to create an explosion. It’s a good article and should debunk the myths. I have read numerous articles on this subject and have come to my own conclusions consistent with Rod and DrCharles. My system is not grounded and I feel quite safe.

-- Joe.....

View Chiefwoodworker's profile

Chiefwoodworker

149 posts in 2838 days


#3 posted 09-03-2009 02:38 PM

Check out a Fine Woodworking article in their 2001 Tools & Shop magazine, under Shop Safety – PVC Pipe Dangers Debunked. It is written by Rod Cole, a mathematician and scientist with help from another MIT professor who is an expert in the physics of lightning. The conclusion is just as DrCharles states. Though theoretically possible it is almost impossible in reality and there have been no reported occurrences. Further, he points out that you should not confuse static built up on the outside of the PVC with static on the inside, the latter being necessary to create an explosion. It’s a good article and should debunk the myths. I have read numerous articles on this subject and have come to my own conclusions consistent with Rod and DrCharles. My system is not grounded and I feel quite safe.

-- Joe.....

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Chiefwoodworker

149 posts in 2838 days


#4 posted 09-03-2009 02:45 PM

Sorry for the double post. I don’t know how that happened.

Rob, I assume your shop foreman saw the explosion in a commercial shop environment with a large dust collector system and piping larger than 4”. Is that correct? Large system with air flow significantly higher than 1500 cfm are different beasts as Don points out.

-- Joe.....

View Xtreme90's profile

Xtreme90

193 posts in 2652 days


#5 posted 09-03-2009 03:00 PM

Woodworker joe,

Just had to quick say I did repond back you yesterday, but sent the response to your email.

Shop is lookin good!
Peace!

-- "I don't cut wood. I machine it!" G.M. The wood machinest

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Chiefwoodworker

149 posts in 2838 days


#6 posted 09-03-2009 03:13 PM

Hi G.M.,

I got the photos and responded in email. They look great. Nice woodworking and awesome machines.

-- Joe.....

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Xtreme90

193 posts in 2652 days


#7 posted 09-03-2009 05:43 PM

woodworker Joe,

Yes I got ur comments thankyou again. Just didn’t no if u received my message to ur email about your jointer issue? I explained about mine, then gave some advice about urs? Just wondering? No biggie.

-- "I don't cut wood. I machine it!" G.M. The wood machinest

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Chiefwoodworker

149 posts in 2838 days


#8 posted 09-03-2009 06:05 PM

G.M.,

I have tried every way from Sunday to shim it and adjust it. I had a Grizzly tech on the phone for some time but to no avail. I believe it was machined badly. I should have returned it early on. However, I always follow jointer work with a hand plane jointer and so don’t need a precise cut from the power jointer. I have learned a few techniques, such as flipping the stock with each pass, that allows me to cope. Being a hand plane guy I view the power jointer as a course cut anyway.

-- Joe.....

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