On Sun, 25 Nov 2007 16:40:42 -0800 (PST), Bob <[email protected]> wrote:
>On Nov 24, 2:07 pm, [email protected] wrote:
>> I've been working on this for some time: A cyclone separator lid that
>> approaches true cyclones in separation efficiency and is scrub-proof.
>>
>> http://www.cgallery.com/jpthien/cy.htm
>
>I tried to post a note on your forum software. It just went into la-la
>land and would not accept it. So I'll post it here.
>
>I read about the idea of expanding your design to 4" hose sizes,
>implying use with a fullsize dust collector. I read about the
>problems you were trying to solve - but all of these were manifested
>with shop vac -2.5" size implementations. I do not think the
>carrryover problem you solved exists with larger scale dust collector
>solutions. The traditional trashcan solution for a fullsize dust
>collector uses 4" hoses and a 30 gallon trash can, which is
>considerably taller than the 10 gallon can you used. I have used a 30
>gallon trashcan with a homemade lid and a 2 hp Jet dust collector for
>years. I never experienced the carryover problem you mentioned. My
>lid looked just like yours, except it has no baffle. I suspect it
>works as well as it does because its so much deeper and a larger
>diameter.
>
>Bob
Me too, Bob..
Just posted for another "vote" for the OP..
mac
Please remove splinters before emailing
mac davis wrote:
> I've been using a shop-made separator with my Harbor freight DC for years.. Just
> a plywood top on a cardboard 50 gal. drum, 1 straight inlet in the center, on 90
> degree elbow on the outer edge.. no baffle, etc..
According to Bill Pentz, this type of design doesn't work with 800+ cfm.
The increased airflow just scours the drum.
Chris
On Nov 24, 2:07 pm, [email protected] wrote:
> I've been working on this for some time: A cyclone separator lid that
> approaches true cyclones in separation efficiency and is scrub-proof.
>
> http://www.cgallery.com/jpthien/cy.htm
I tried to post a note on your forum software. It just went into la-la
land and would not accept it. So I'll post it here.
I read about the idea of expanding your design to 4" hose sizes,
implying use with a fullsize dust collector. I read about the
problems you were trying to solve - but all of these were manifested
with shop vac -2.5" size implementations. I do not think the
carrryover problem you solved exists with larger scale dust collector
solutions. The traditional trashcan solution for a fullsize dust
collector uses 4" hoses and a 30 gallon trash can, which is
considerably taller than the 10 gallon can you used. I have used a 30
gallon trashcan with a homemade lid and a 2 hp Jet dust collector for
years. I never experienced the carryover problem you mentioned. My
lid looked just like yours, except it has no baffle. I suspect it
works as well as it does because its so much deeper and a larger
diameter.
Bob
On Nov 26, 1:00 pm, mac davis <[email protected]> wrote:
> On Sun, 25 Nov 2007 17:23:21 -0800 (PST), [email protected] wrote:
>
> I've been using a shop-made separator with my Harbor freight DC for years.. Just
> a plywood top on a cardboard 50 gal. drum, 1 straight inlet in the center, on 90
> degree elbow on the outer edge.. no baffle, etc..
> Used with lathe and band saw and palm sanders, mostly..
> I empty the drum every couple of months and check the DC bags once a year and
> they've never collected enough to tell that they did...
>
> All 4" fittings on the Can and tools, except a 2 1/2" nozzle on the lathe..
>
> mac
>
> Please remove splinters before emailing
Well if it works that's great. I'm not here to fix what works, just
provide a possible solution for people that may not be as happy with
their setup as you.
Sorry if I somehow offended anyone by posting.
On Nov 25, 6:40 pm, Bob <[email protected]> wrote:
> I tried to post a note on your forum software. It just went into la-la
> land and would not accept it. So I'll post it here.
Sorry about that. I'll test it some more.
> I read about the idea of expanding your design to 4" hose sizes,
> implying use with a fullsize dust collector. I read about the
> problems you were trying to solve - but all of these were manifested
> with shop vac -2.5" size implementations. I do not think the
> carrryover problem you solved exists with larger scale dust collector
> solutions. The traditional trashcan solution for a fullsize dust
> collector uses 4" hoses and a 30 gallon trash can, which is
> considerably taller than the 10 gallon can you used. I have used a 30
> gallon trashcan with a homemade lid and a 2 hp Jet dust collector for
> years. I never experienced the carryover problem you mentioned. My
> lid looked just like yours, except it has no baffle. I suspect it
> works as well as it does because its so much deeper and a larger
> diameter.
>
> Bob
Thanks Bob. Interesting observations. I have personally witnessed
horrific scrubbing in shops I've visited, even with the 30-gallon
cans. Many people I know only use the cans with their planers because
they can't keep anything smaller than very large chips in their cans.
But I will do testing w/ and w/o the baffle when I finish building my
larger model.
On Sun, 25 Nov 2007 17:23:21 -0800 (PST), [email protected] wrote:
>
>Thanks Bob. Interesting observations. I have personally witnessed
>horrific scrubbing in shops I've visited, even with the 30-gallon
>cans. Many people I know only use the cans with their planers because
>they can't keep anything smaller than very large chips in their cans.
>
>But I will do testing w/ and w/o the baffle when I finish building my
>larger model.
I've been using a shop-made separator with my Harbor freight DC for years.. Just
a plywood top on a cardboard 50 gal. drum, 1 straight inlet in the center, on 90
degree elbow on the outer edge.. no baffle, etc..
Used with lathe and band saw and palm sanders, mostly..
I empty the drum every couple of months and check the DC bags once a year and
they've never collected enough to tell that they did...
All 4" fittings on the Can and tools, except a 2 1/2" nozzle on the lathe..
mac
Please remove splinters before emailing
On Mon, 26 Nov 2007 15:04:02 -0800 (PST), [email protected] wrote:
>On Nov 26, 1:00 pm, mac davis <[email protected]> wrote:
>> On Sun, 25 Nov 2007 17:23:21 -0800 (PST), [email protected] wrote:
>>
>> I've been using a shop-made separator with my Harbor freight DC for years.. Just
>> a plywood top on a cardboard 50 gal. drum, 1 straight inlet in the center, on 90
>> degree elbow on the outer edge.. no baffle, etc..
>> Used with lathe and band saw and palm sanders, mostly..
>> I empty the drum every couple of months and check the DC bags once a year and
>> they've never collected enough to tell that they did...
>>
>> All 4" fittings on the Can and tools, except a 2 1/2" nozzle on the lathe..
>>
>> mac
>>
>> Please remove splinters before emailing
>
>Well if it works that's great. I'm not here to fix what works, just
>provide a possible solution for people that may not be as happy with
>their setup as you.
>
>Sorry if I somehow offended anyone by posting.
Please don't take my posts wrong..
I understood that you were researching designs and wanted examples of what folks
used..
sorry..
mac
Please remove splinters before emailing
On Mon, 26 Nov 2007 14:20:27 -0600, Chris Friesen <[email protected]> wrote:
>mac davis wrote:
>
>> I've been using a shop-made separator with my Harbor freight DC for years.. Just
>> a plywood top on a cardboard 50 gal. drum, 1 straight inlet in the center, on 90
>> degree elbow on the outer edge.. no baffle, etc..
>
>According to Bill Pentz, this type of design doesn't work with 800+ cfm.
> The increased airflow just scours the drum.
>
>Chris
You're way over my head, Chris..
I just know it works and have no idea why.. lol
mac
Please remove splinters before emailing