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Old 05-31-2018, 10:20 AM   #1
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3" stove pipe to 3" stove cap dilemma

Hoping someone has some advice for connecting my 3" double walled stainless stove pipe for cubic mini to the 3" H style Dickinson cap. They are exactly the same size. Would it be ok to cut outer wall of stove pipe so that cap can fit over inner section? I could have the outer wall go right up to the very base of the cap. Thanks.
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Old 05-31-2018, 11:03 AM   #2
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As long as you seal the joint after, that should work fine.
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Old 05-31-2018, 01:04 PM   #3
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I have the same issue with my cubic mini. So far I haven't put a cap on mine and the issue with that is when it rains water gets between the outer and inner pipe and leaks out on top of the stove. Good to know the Dickenson H cap is the same size, kinda why I haven't messed with a cap yet. I was thinking if I ran into that issue with a cap that maybe I could take it to a muffler shop and have it swelled just a touch to fit. I guess the problem is if you swell the cap to fit outside the inner stove pipe then you will probably have junk running down between the two pipes. someone needs to build a cap that's double walled and the inside piece goes inside the inner stove pipe and the outer cap piece goes outside the outer stove pipe then things would be sealed correctly. I did find a Frito chip dip can that with a little work will go over the outer stove pipe and seal everything off. If you get a solution figured out be sure and post it, I will do the same.
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Old 05-31-2018, 01:18 PM   #4
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Quote:
Originally Posted by 84chevyguyid View Post
I have the same issue with my cubic mini. So far I haven't put a cap on mine and the issue with that is when it rains water gets between the outer and inner pipe and leaks out on top of the stove. Good to know the Dickenson H cap is the same size, kinda why I haven't messed with a cap yet. I was thinking if I ran into that issue with a cap that maybe I could take it to a muffler shop and have it swelled just a touch to fit. I guess the problem is if you swell the cap to fit outside the inner stove pipe then you will probably have junk running down between the two pipes. someone needs to build a cap that's double walled and the inside piece goes inside the inner stove pipe and the outer cap piece goes outside the outer stove pipe then things would be sealed correctly. I did find a Frito chip dip can that with a little work will go over the outer stove pipe and seal everything off. If you get a solution figured out be sure and post it, I will do the same.
I thought of the muffler shop deal, but they wouldn't be able to accurately swell it only a couple thou.
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Old 06-02-2018, 08:35 PM   #5
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try lowes?

Last Fall a friend bought double wall chimney and cap at Lowes.
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Old 06-04-2018, 11:31 AM   #6
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I bought some of the double wall pipe at Lowes when I first got my mini cubic stove but its not the right size to overlap the right direction with the piece on the stove. I actually used it for a bit that way but it kept leaking creosote out onto the top of the stove and making a mess. I went to several wood stove dealers but couldn't ever come up with anything that would work so I finally bit the bullet and bought the double wall stainless pipe that cubic mini sells. Messed around with a couple different vent caps for the top but there again couldn't find anything that would fit inside the inner pipe and have a way to fit over the outside of the outer pipe to keep rain from going down between the double walls and leaking water out on the top of the stove. Cubic mini needs to build a cap that works with their double walled pipe!
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Old 06-04-2018, 12:37 PM   #7
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88chevy, without seeing the parts I'll take a stab at brainstorming and may just be stating what you already have thought,
So is the problem that the Mini pipe is smaller than 6 inches and bigger than 5 inches?
perhaps something like this in 6 inch diameter can be screwed to the top of your pipe and protect the gap?
https://www.globalindustrial.com/enl...=AAP_EX-RCGU04
Or if you prefer a spark arrester like I made, you might cut some sheet metal to cover the gap between the inner and outer walls. you may use a wall finisher donut that is 6"I.D and 9"O.D. from ace hardware?
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Old 06-05-2018, 11:30 AM   #8
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The piece on the stove is 3 inch and anything I found at Lowes/stove places is the same size as the piece on the stove so it wont go inside of the stove piece. I think the best way to fix the issue is make a custom cap thats the right size.
Attached Images
File Type: png stove cap.png (5.9 KB, 4 views)
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Old 06-05-2018, 11:47 AM   #9
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Diy cap

Here is the cap that I made to include a spark arrester function, and the plate at the top seems to be keeping out all the rain while stationary.
Basicly I cut up a stove pipe and some chicken wire. The top plate attaches to a 2"H cap I bought.

https://www.skoolie.net/forums/membe...ture19013.html
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Old 06-05-2018, 12:23 PM   #10
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Am I missing something here or are you trying to connect 2-3" pipes? Will this 3" coupling not do the job?


https://www.homedepot.com/p/Master-F...SPC3/205335407
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