New Flu Hole ?

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hcarlow
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Post Fri. Apr. 20, 2012 12:46 pm

What is the easiest way to cut a flu hole in an existing cement block chimney with a clay liner ? I can drill 1/2 inch or so holes around the outside circumference and chip out the cement block, but what about the clay liner? I don't want to break or crack that.

CapeCoaler
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Post Fri. Apr. 20, 2012 1:04 pm

Depends concrete contractors with a big wet core drill will make a very nice hole...
12" hole for me was $250 most of the cost is the setup, drilling and travel time...
Not the size of the hole...
I am not an engineer, train or otherwise!
I stay at a Holiday Inn at least once a year!
Most of all I do have common sense and a practical application of logic.
Oh, add humor, on the dry side, along with a wee bit 'o sarcasm.

hcarlow
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Posts: 210
Joined: Wed. Mar. 21, 2012 7:44 pm
Stoker Coal Boiler: Leisure Line WL 110
Location: Northern Maine (Houlton area)

Post Fri. Apr. 20, 2012 4:53 pm

I was hopeing I could get diamond wheel for a small hand grinder and rough it out with that .


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freetown fred
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Post Fri. Apr. 20, 2012 6:55 pm

If you take your time you should be fine my friend.
"A people that values it's privileges above it's principals, soon loses both"--Dwight D Eisenhower

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whistlenut
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Location: Central NH, Concord area

Post Fri. Apr. 20, 2012 9:17 pm

I like the multiple hole method, and with a nice small 'Bosch or equal' hammer drill, I'd go with 3/8" bits and make it quick and easy. Not a job to play 'Magilla the Gorilla' on, slow and steady wins every time.

Make the hole big enough the first time for a thimble of appropriate size.

Here is a PS: leave the damned thimble out a 1/4 to 1/2" when you are done. You need to screw the stove pipe into it in at least three places, so give yourself some room to do just that. :idea: :idea: :idea: :idea: :!:

Sure, I'd love to 'core' every hole, but this way you won't spend $20.00 on two SDS bits and a 25.00 rental of a small hammer drill.

I have not used a small diameter diamond wheel myself, but if you go that route, let us know how it worked. (Hard to make a round hole uniform, IMO)
Last edited by whistlenut on Sat. Apr. 21, 2012 1:22 am, edited 1 time in total.
"Political correctness is a doctrine, fostered by a delusional, illogical minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a 'piece of human solid waste' by the clean end." More true today....

CapeCoaler
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Posts: 4423
Joined: Sun. Feb. 10, 2008 3:48 pm
Stoker Coal Boiler: want AA130
Hand Fed Coal Stove: DS Machine BS#4, Harman MKII, Hitzer 503,...
Coal Size/Type: Pea/Nut/Stove
Location: Cape Cod, MA

Post Fri. Apr. 20, 2012 9:56 pm

Yep, mine was thru 8" poured concrete...
Block would be way easier to do oneself...
I am not an engineer, train or otherwise!
I stay at a Holiday Inn at least once a year!
Most of all I do have common sense and a practical application of logic.
Oh, add humor, on the dry side, along with a wee bit 'o sarcasm.


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whistlenut
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Posts: 3549
Joined: Sat. Mar. 17, 2007 6:29 pm
Stoker Coal Boiler: AA130's,260's, AHS130&260's,EFM900,GJ & V-Wert
Hand Fed Coal Boiler: Franks,Itasca 415,Jensen, NYer 130,Van Wert
Hot Air Coal Stoker Furnace: Alaska, EFM, Keystoker, Yellow Flame
Hot Air Coal Stoker Stove: Alaska, Keystoker-2,Leisure Line
Hand Fed Coal Stove: Alaska, Gibraltar, Keystone,Vc Vigilant 2
Hand Fed Coal Furnace: Ford, Jensen, NYer, Van Wert,
Baseburners & Antiques: Glenwoods
Coal Size/Type: Barley, Buck, Rice ,Nut, Stove
Other Heating: Oil HWBB
Location: Central NH, Concord area

Post Fri. Apr. 20, 2012 9:57 pm

Poured is NO QUESTION: Call the Coring Boys.....you would not live long enough! Block.....not so much work.....

Raining HARD right now...thought it was only a 20% chance tonight....oh well.....
Last edited by whistlenut on Sat. Apr. 21, 2012 1:23 am, edited 1 time in total.
"Political correctness is a doctrine, fostered by a delusional, illogical minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a 'piece of human solid waste' by the clean end." More true today....

CapeCoaler
Member
Posts: 4423
Joined: Sun. Feb. 10, 2008 3:48 pm
Stoker Coal Boiler: want AA130
Hand Fed Coal Stove: DS Machine BS#4, Harman MKII, Hitzer 503,...
Coal Size/Type: Pea/Nut/Stove
Location: Cape Cod, MA

Post Fri. Apr. 20, 2012 10:03 pm

Clear and dark?
Big rain sunday-tuesday...
Pumps are ready...
I am not an engineer, train or otherwise!
I stay at a Holiday Inn at least once a year!
Most of all I do have common sense and a practical application of logic.
Oh, add humor, on the dry side, along with a wee bit 'o sarcasm.

hcarlow
Member
Posts: 210
Joined: Wed. Mar. 21, 2012 7:44 pm
Stoker Coal Boiler: Leisure Line WL 110
Location: Northern Maine (Houlton area)

Post Sat. Apr. 21, 2012 7:44 am

Thanks for the info , I do know a retired mason who doesn't live to far from me ,so I just might stop over to his place in a few days and see what he suggests. Who knows ,maybe he will lend me the right equipment or at least some more ideas.

WNYRob
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Post Sat. Apr. 21, 2012 9:22 am

CapeCoaler wrote:Clear and dark?
Big rain sunday-tuesday...
Pumps are ready...
It is looking like a major snow storm for N. PA and NY Monday. Trees leafed out + heavy wet snow of maybe a foot or more = bad start to the week!!

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