Mark & Sylvia Mondloch on fri 29 jun 01
> putting some sort of spark arrester/ scrubber on the top of a wood kiln
stack to keep embers from
> blowing out
I guess this would be in the category of what didn't work-
We put an angle iron frame around the top of our brick chimney and on one
side hinged a solid metal plate and on the other side hinged a sand screen
from a gravel pit. Each had a short bar welded to a corner so it could be
flipped open and closed from the ground with a long pole with a u-bolt on
the end. The solid plate is closed at the end of firings and that has held
up fine. The screen was closed during firings to try to stop sparks but it
only held up maybe a half dozen firings before it was burned through.
Now I-
1. don't fire it when conditions are too dry
2. don't use sparky wood- here that means no cedar or very small branches
with needles or leaves attached
3. don't fire on windy days- when it's calm out the sparks go straight up
and burn out before hitting the ground. If it's windy they blow sideways and
often hit the ground before being completely burned.
Sylvia
Mark & Sylvia Mondloch
Silver Creek Pottery & Forge
W6725 Hwy 144
Random Lake ,Wi 53075
silvercreek@execpc.com
http://www.silvercreekpottery.com
Julie Wills on fri 29 jun 01
Hi,
I've heard in the past, but can't recall details, of putting some sort of
spark arrester/ scrubber on the top of a wood kiln stack to keep embers from
blowing out. Has anyone tried anything to this effect? If so, what has/
hasn't worked? I'm thinking, if nothing else, of perhaps laying screen
between each of the last several layers of bricks at the top of the stack to
act as baffles and trap embers inside- but am doubtful that this will hold
up even for one firing. This new kiln is surrounded on three sides by
Montana ranchland pastures, and everyone here (rancher neighbors included)
is really nervous after last summer's wildfires.
Any information would be appreciated!
Thanks,
Julie Wills
jwills@bigsky.net
Hank Murrow on fri 29 jun 01
Julie Wills wrote,
>
>I've heard in the past, but can't recall details, of putting some sort of
>spark arrester/ scrubber on the top of a wood kiln stack to keep embers from
>blowing out. Has anyone tried anything to this effect? If so, what has/
>hasn't worked? I'm thinking, if nothing else, of perhaps laying screen
>between each of the last several layers of bricks at the top of the stack to
>act as baffles and trap embers inside- but am doubtful that this will hold
>up even for one firing. This new kiln is surrounded on three sides by
>Montana ranchland pastures, and everyone here (rancher neighbors included)
>is really nervous after last summer's wildfires.
Dear Julie;
I have made cylindrical stainless steet mesh arrestors for large
wood kilns to good effect. You want to make the arrestor cylinder at least
three times the area of the flue itself to counteract the mesh's
restriction of the draft. Stainless will last many times longer than mild
steel.
Cheers, Hank
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