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Working with Morgan Superwool Plus ceramic blanket

 
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Mark Brunnr wrote:
Edit: the interface where the burn tunnel bricks and the square opening meet the round riser is a point where the metal pipe could be exposed to high heat, I'd make sure that you use bricks cut and fitted so that no metal is exposed to direct heat. Some will cob a few bricks around the riser to hold it in place with friction, so perhaps a layer of fiber blanket cut to shape that the riser sits on would help too?



exactly what I was looking for. I was like how will the metal not be in contact with the heat at the bottom!
I think I found for people in France the correct one Superwook 2" for 23euros + 16.5eur shipping. so 44 usd all together. looks cheap as when I check some links here
https://www.amazon.fr/Couverture-Fibre-C%C3%A9ramique-1000-610/dp/B00XMWI7AS
 
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Hi Jody;  
Where the pipe sits on top of the square opening.  It is not exposed to more than several hundred degrees. The same temp your barrel side is running.
The real heat, 1500F  is inside the ceramic blanket. It insulates the metal pipe completely.  
I did box my riser in with a few bricks and stuff some pieces of blanket in the four corners, but the metal itself is already protected.

EDIT)   I just noticed your amazon add.   Your looking for 1" thick superwool not 2".  
 
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I don’t think there is any problem using 2” that is what I use .
 
thomas rubino
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No, not a problem at all. Rather handy to have 2" around.  
But for a riser she would need a 10" pipe for her 6" riser.
After reading Matt Walkers site, even 1/2" blanket will work, but the 1" works well for pipe sizing.
 
Fox James
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Well I know if you lay a single 1” piece on top of a cast pizza over it will too hot to touch, 2” will still be quite hot or just bearable to touch, that is why we use 4” of ceramic matting on top of an outdoor pizza oven.
I have a feeling that 2” will give a hotter burn, of course I have no real idea if it makes any difference from 1/2 inch but it seem to me that it just might?

 
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Perhaps it’s shipping to Canada vs USA where I’m at then.
 
Jody Vanden
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thomas rubino wrote:No, not a problem at all. Rather handy to have 2" around.  
But for a riser she would need a 10" pipe for her 6" riser.
After reading Matt Walkers site, even 1/2" blanket will work, but the 1" works well for pipe sizing.



Yeah but that's pretty much the only good quality I found that I can get in France. But I struggle finding a tube of 10 inch. I might have to do one with a sheet of metal with some rivets or screwed in. I think this might be the easiest solution for me :(

ps: yeah I know Jodie Foster is a girl, but I am not hehe I am different :)
 
Fox James
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Air conditioning spiral pipe is what I used, readily available in virtually any size and not expensive.
 
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Gerry Parent wrote:Thanks for the link Thomas. I think the best deal I've seen so far and so much left over to continue to build more!  Unfortunately, when I got to the checkout, they said no delivery to Canada. Bummer.




I found this but no pricing without an account. I'm not sure they even sell direct. https://ca.brockwhite.com/product/2-0701693

I'm going to email them.
 
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Thank you for the link Dave.

Holy crap though....300 feet? That would be enough for 100 RMH's!

As an update to my earlier post, I managed to find a business just across the border that offers a postal service to provide an address for people like me. Should be arriving in a week or so.
 
Dave Gamper
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Gerry Parent wrote:Thank you for the link Dave.

Holy crap though....300 feet? That would be enough for 100 RMH's!

As an update to my earlier post, I managed to find a business just across the border that offers a postal service to provide an address for people like me. Should be arriving in a week or so.



Glad you found a supplier, 300' would definitely be a group buy situation. I also contacted the manufacturer to see if there is a supplier in ontario.
 
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I just received Superwool Plus in the mail today and spent much of the day trying to find 10" pipe to make my own 5-minute riser (for an 8" system). Couldn't find 10" anywhere locally!

Thomas, with your photos you say you're using 10" hvac pipe- does that pipe have to be anything special to handle the heat? People say it gets to about 600F inside the barrel?

Would this stuff last over the years?
https://www.homedepot.com/p/Master-Flow-10-in-x-5-ft-Round-Metal-Duct-Pipe-CP10X60/100204114#

Everything else I see online is extremely expensive, like this...
https://www.northlineexpress.com/10-x-24-durablack-single-wall-black-stove-pipe-10dbk-24.html?utm_source=googlepepla&utm_medium=adwords&id=&gclid=EAIaIQobChMIstqSyfDr6wIV4oFbCh3v6A7BEAQYEiABEgLgcvD_BwE

Excited about the prospects, but frustrated so far!
-Richard
 
thomas rubino
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Richard ; Build your own with sheet metal and a pop rivet gun. Or screws if you don't have a pop gun.
I did use hvac 10" on mine but it was the heavy wall trunk line pipe not the super lite transfer pipe.
 
Richard Kniffin
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I don't have any experience with sheet metal... what gauge would I need, what kind of store can I buy it at? Price estimate?

I'm guessing this 26 gauge stuff is too flimsy?- https://www.truevalue.com/shop/heating-cooling/fireplaces-wood-stoves/hvac-duct-furnace-pipe-fittings/furnace-pipe-26-ga-galvanized-10-x-24-in

Thanks for your time!
 
thomas rubino
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You know Richard, I think you can use that.  26 gauge will not melt outside the riser.  
Sheet metal sheds heat as fast as it gets it.  The galvanizing could burn off if it maintains over 400 F . But if it did, it only does it once.
You should try to use a barrel with a clamp on lid. This makes riser inspection a 15 minute job
 
Richard Kniffin
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Interesting, thanks for the info. I found more 26 gauge stuff as well, much more expensive and I don't understand why!

https://www.homedepot.com/p/Master-Flow-10-in-x-5-ft-26-Gauge-Spiral-Pipe-26SP10X60/205330699

The True Value pipe was 2' long for about $16, the spiral Home Depot pipe is 5' for $90.

My barrel does have a removable lid, so I can look inside easily. I want to be cautious since I'm new to just about ALL of this, but maybe I'll go with 26 ga and check it frequently. And perhaps burn off the galvanization ahead of time, outside.
 
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thomas rubino wrote:Richard ; Build your own with sheet metal and a pop rivet gun. Or screws if you don't have a pop gun.
I did use hvac 10" on mine but it was the heavy wall trunk line pipe not the super lite transfer pipe.


I'll be using a plain sheet of stainless steel stitch screwed in a 10" tube, as I couldn't find 10" pipe in stock. My superwool arrived today, and though I ordered the 8#/sq ft, the whold 12 sq ft weighs just 16lbs.  So what exactly does that 8lb/sq ft mean? Anyone know?
Scale.jpg
Sixteen Pounds??
Sixteen Pounds??
SuperWool.jpg
SuperWool, 12 sq ft
SuperWool, 12 sq ft
 
thomas rubino
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Hi Laura;  
I believe it represents how dense it is, not it's actual weight.
Creating your own size pipe is sometimes easier and cheaper than buying larger sizes.
Your going to be very happy with your rebuild ... I know I sure am happy with ours!
 
Laura Kelly
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thomas rubino wrote:
Creating your own size pipe is sometimes easier and cheaper than buying larger sizes.



The metal I was working with was so thick, I could not bend it into anything near a 10" circle, so I scored it, bent it and made a sort of square ovoid.  I used the dimensions of my brick opening plus an inch all around for the wool and screwed it together.  It's rough but sturdy.  As my riser container is sort of 10" x 9 1/2" the perimeter is almost 8" longer than the diameter of the 10" circle, and I'd only ordered a 24" x 6'-0" piece.  I don't have enough for two 39" lengths, but I read where you wrote that 28"is enough for inside the 31.4" circumference of a 10" circle, so maybe I could get by with 36" for my 39"-perimeter boxy ovoid.   Unfortunately, when I went to cut the wool, I measured and they had sent a few inches too short.  I'm stymied.  I've contacted Axner.com/Laguna Clay and asked how I could make a case for receiving a credit of another 36" piece.  I eagerly await their reply.

UPDATE:  The superwool I ordered was 1", but I received 2", only less square feet.  After originally suggesting that I slice the 2" into 1" slabs so that I'd have enough square footage, they agreed to take the mis-ship back and will resend the correct amount of 1" superwool  Yay. Axner.com.  Good folks.
NewRiser.jpg
[Thumbnail for NewRiser.jpg]
 
Richard Kniffin
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Here's a spot in my combustion unit where I used superwool... it has burned successfully under good conditions and so far I can recommend this method to others. However, if I did it over again I'd probably just use more clay slip between each brick and make the riser opening a little bigger for simplicity.

To get the superwool down into that small space, I sandwiched it between two sheets of paper, slid the whole package down, then slid the paper back up. Otherwise the superwool gets stuck, torn, and shredded as you try to pack it down. (I know this from experience!)
IMG_3110.JPG
sizing of firebrick left me with a sizable gap in my 'bridge'
sizing of firebrick left me with a sizable gap in my 'bridge'
IMG_3111.JPG
seen from side
seen from side
IMG_3136.JPG
filled with superwool
filled with superwool
 
Gerry Parent
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Got a hole that needs filling? Superwool to the rescue!

Great innovation Richard.
 
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