|Project by DaveTPilot||posted 03-27-2012 11:14 PM||5506 views||17 times favorited||31 comments|
I started to blog about my exploits to improve my dust collection. You can read what is going on so far at my blog.
First, I want to say that nothing I write, or say in my soon to be published video, is in any way meant to diminish the awesome design of the Thien Baffle or any of the variations that some very talented people have shared with us all.
My objectives were simple:
1. I wanted to increase the efficiency of my existing chip collection. This consisted of a commercial trash can separator and a metal trash can.
2. I wanted a way to empty the chips and dust without removing the lid separator. This was so I could semi-permanently seal the lid with window caulking. This would help improve efficiency as well.
Let me start by saying that the lid, once slightly modified, works very well as is. It stops working well, however, when the can starts to fill up and it doesn’t take very much debris to seriously reduce the efficiency. This should be old news to those who are familiar with this type of separator.
As I said in my blog, I tried the, what I will call, the simple Thien Baffle. It did not work at all for me. I could have made some critical errors in the construction and/or implementation or maybe my 3 hp dust collector was just too much for the design. I tend to lean toward my errors being the cause. :) I didn’t have the time to construct the separator that some call the “lid topper” or “top hat” style Thien Separator.
Be that as it may, I abandoned the design and I am glad that I did. Not because it’s a bad design, on the contrary, I think it is brilliant! But because it forced me to try something new. The beauty of this design is that it is extremely easy, fast and cheap to build. This is especially true for those who already own a lid separator. I could try using the lid, as some others have done, with the Thien Baffle but this design works so well I am going to stick with it for now.
Here’s what I did:
I built a dust bin with a door for easy emptying. Then, using a variation of the Thien Baffle, added a MDF disk about 3” smaller than the diameter of the can at 3” from the bottom of the can. I just pulled the size of the disk out of thin air. There was absolutely no scientific reasoning behind it.
I mounted the disk on some 3” posts to the bottom of the can then cut away most of the bottom leaving the tabs that support the baffle. The baffle is meant to reduce the effect of turbulence created by the vortex of air upon the pile of collected debris. I would have used the Thien design here but because there was such a large distance from the inlet to the baffle, I had no idea how to place the 240 degree cut away. I really just took a shot in the dark and hoped for the best. LOL
It really works very well. Better than I expected and certainly better than it had before. I will post a video later but for now, suffice it to say that nearly 100% of all chips and dust, down to the talcum powder fine dust, was successfully collected leaving my dust collector bags completely empty.
I would like to add a special “thank you” to Phil Thien. Without your inspiration and excellent design, I would not have the incredible dust collection separator I have today.
-- How valuable is time to a person who spends his disparaging the beliefs of others? --David Berthelette www.pilotwoodworks.com