Re: Building a Phil Thein Baffle

That was quick!

If may suggest, adding a weather strip inside the groove that mates to the lip of the the can will improve the vacuum. Also put something heavy on top, or maybe some rubber straps, to make the lip fit snugly into the weather strip.

In this picture from Phil's site:

His entry nozzle has the outer part of its circumference cut off. I suspect this has a good effect.

How much debris transferred to the shopvac?

no need for a weatherstrip, it is air tight, blew air in and bubble tested. as for the transfer, the filter I am using is bag type, cant confirm how much yet, will try tomorrow. my first baffle could separate approx 98++%... the filter stays very clean...

Re: Building a Phil Thein Baffle

Joints do not necessarily seal the same in different pressure directions. The problem with vacuums is that it more difficult to find leaks since you'd have to be inside the vacuum chamber to see the bubbles. The application seems forgiving so I guess it is ok. I'll definitely build one.

Does the container really have to have inclined sides? How about straight sides? Or maybe a plastic drum with concave sides but with some kind of vertical baffle to have inclined sides of sorts?

Re: Building a Phil Thein Baffle

the ideal container is metal with straight sides, it is easier to build the baffle that way. a concave container negates the baffle effectiveness if you cannot make the baffle touch the large side to the container wall. inclined sides are easy to adjust and opens better since the top would have more room...

Re: Building a Phil Thein Baffle

the very first PT baffle I made was a plastic container for pool chemicals, it does tend to collapse when you clog the hose... btw, it still works and now belongs to Jay....

Re: Building a Phil Thein Baffle

Thanks timber. Those metal cans they pack lard in come to mind. Since this is not your first, I'll take your word for it. Hmmm ... I wonder could the space under a TS have a PT baffle built-in?

Re: Building a Phil Thein Baffle

actually the mod I see for it is another curved pipe on top so the hoses can pass sideways but enter straight. that way you can mount the shopvac on top with a jig or hide the first stage(PT baffle) filter under the table...

Re: Building a Phil Thein Baffle

the very first PT baffle I made was a plastic container for pool chemicals, it does tend to collapse when you clog the hose... btw, it still works and now belongs to Jay....

It works so effectively that I never thought to upgrade it with a metal can.

Re: Building a Phil Thein Baffle

the reason why a plastic can isn't ideal is bec., when the hose clogs from a big piece of paper or plastic or anything that can seal the hose, the container will collapse. even this short thick container I use now still does collapse (which also means it seals well).
just to try it out... I made dust. started by cleaning the shopvac container... there is light stained dust at the bottom...

ran the shopvac with the PT baffle(which I emptied too) in line, and after several minutes... it has about 8 cups of dust in it.

I am not sure if this is 98% but it seems like 99.7% or better...

Re: Building a Phil Thein Baffle

The shop vac ( w/ the PT baffle ) I have collect dust I say within that percentage too. The main cleanup job is more on blowing compressed air on the vac filter to clean it of heavy fine dust buildup which tend to decrease suction efficiency.

Re: Building a Phil Thein Baffle

shopvac has a bag option Jay, it is what I use now and is better with a 10 or 5 micron filter capability iirc, saves the filter way much better and saves the motor by 10 folds...

Re: Building a Phil Thein Baffle

What's a bag option?

tks

Re: Building a Phil Thein Baffle

brain dead question. what happens if i just yank out the filter in my shopvac? it will still suck right?

Re: Building a Phil Thein Baffle

yes Ben, it will but whatever dust that gets into the vacuum has a tendency to get to the motor too...
Jay,
here is the bag option...

installed...

then I chose a simple cloth filter that shopvac also carries... make the motor work less...

Re: Building a Phil Thein Baffle

I'll check this out when I visit Binondo again. I hope there's one that will fit a Hangup Pro model.

Have you noticed a real performance improvement on the PT baffle when you switched to a metal can?

Thanks

Re: Building a Phil Thein Baffle

the improvement isn't much on efficiency. its just that I tend to get big pieces clog the hose often that collapses the plastic container. even this short thick one I am using collapses...