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Post by belgiangulch on Jul 16, 2018 14:55:14 GMT -8
Hi all , shopping around for ceramic fiber blanket. I see several different density's # 6 is very common so is # 8 I have also seen some #10. price goes up with the number. I am building a new stove and hopefully upgrading an old riser with "pinhead" risers . What density is used ? only about $10 difference between 6 & 8 I'm leaning towards 25' of #8 1" x 24" for less than $100 delivered. What about ridgidizer ? Do I want/need it ?
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Post by peterberg on Jul 16, 2018 22:51:41 GMT -8
There are three densities commonly available , yes. In metrics: 96 kg/m³, 128 kg/m³ and 160 kg/m³, corresponding with #6, #8 and #10. Last time I used the #8 density and 1" thickness for to wrap around an 8" steel pipe. I'd find it hard to do with four hands and almost impossible with two. During another workshop we used #6 to wrap around a square riser and it worked just fine.
So, I'd think you would do fine with the 96 kg/m³ aka #6 density.
Maybe Pinhead knows what he was using at the time?
edit:
By the way, the numbers 6, 8 and 10 should be read as pcf, pounds per cubic foot.
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Post by wiscojames on Jul 17, 2018 8:20:17 GMT -8
I used the 8 pounds per cubic foot ceramic fiber blanket. it was pretty easy to cut a piece, roll it up and get it into a section of 8 inch flue pipe for a 6-inch riser.
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Post by ronyon on Jul 17, 2018 10:02:03 GMT -8
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Post by belgiangulch on Jul 17, 2018 17:58:39 GMT -8
Thanks for the reply's guys. I have a 10" pipe to make an 8" riser. I think I'll go with the 8#. I can get 25' of 1" x 24" for $100 delivered. More than I currently need but a better deal than buying 12.5' for $89. I'll find a use for it. Or somebody local can contact me about any excess that I might part with.
No need for ridgidizer then ?
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Post by wiscojames on Jul 17, 2018 18:19:57 GMT -8
I'm not sure what conditions would require rigidizer. I haven't used it. In any case, with the riser I made, the ceramic fiber stays in place well, and does not seem to be more 'rigid'. Making an 8 inch riser should be easier, given the larger circumference.
--that should have said, "does not seem to NEED to be more rigid."
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Post by pinhead on Jul 27, 2018 5:08:36 GMT -8
There are three densities commonly available , yes. In metrics: 96 kg/m³, 128 kg/m³ and 160 kg/m³, corresponding with #6, #8 and #10. Last time I used the #8 density and 1" thickness for to wrap around an 8" steel pipe. I'd find it hard to do with four hands and almost impossible with two. During another workshop we used #6 to wrap around a square riser and it worked just fine. So, I'd think you would do fine with the 96 kg/m³ aka #6 density. Maybe Pinhead knows what he was using at the time? edit: By the way, the numbers 6, 8 and 10 should be read as pcf, pounds per cubic foot. Sorry for the late reply. My first heat riser (still going strong) was 6# density. |
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