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Advice on a RMH build in Hokkaido Japan

 
pollinator
Posts: 461
Location: Toyoura Hokkaido
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Hey folks!

Hope all is well in the holiday season.

Here’s a quick few pictures of what we did with the rice hull bags for insulation. In the end we didn’t even use the sewing machine yet. Just filled the bags to the top, covered with a piece of newspaper and then snitched the bags shut.

Took some string and cable nails and just strapped all the bags to the walls. Seems to be working well. Total cost for rice hulls, bags, string and nails under $60 I think.

Likely start experimenting in the spring with more permanent applications in other structures.

Will keep you posted.

Stay safe and well…

Peter

   
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gardener
Posts: 1602
Location: Westbridge, BC, Canada
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building solar woodworking rocket stoves wood heat greening the desert
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Hey Pete & Co.
That gives a whole new meaning to batt insulation. Well done utilizing inexpensive and natural materials to achieve a simple goal.
Will you be covering them up with  anything or going with the ‘truth window’ look?
 
Peter Sedgwick
pollinator
Posts: 461
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Gerry Parent wrote:Hey Pete & Co.
That gives a whole new meaning to batt insulation. Well done utilizing inexpensive and natural materials to achieve a simple goal.
Will you be covering them up with  anything or going with the ‘truth window’ look?



Hey Gerry!

These are gonna be left as is. Brutal truth on this one. Like I said before the old house is really on its last leg so I’ve decided to just use it as a build experiment. See how materials preform without much investment of time and money. Mr Yoshida actually told us the other day that the mice don’t like rice hulls. I didn’t add any borax to the mix, just a piece of newspaper and a tight tie up.

Thinking of trying a small structure in the spring with an earth bag stem wall. Then build pole frame or up cycled old timber with wattle and dob for an outer wall strap the rice hull bags to that and cover with cob from the inside.

Definitely a topic for another thread.

Anyway, stay creative…

Peter & Mimi
 
Peter Sedgwick
pollinator
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Thought I’d give a bit of an update.

We are part way through our first real winter of using our RMH full time and I’ll have to say it’s been a real pleasure. We are in about a meter and a half of snow at the moment, but the house is pretty warm for a building with pretty make shift insulation. The neighbors come over and everyone is so astonished at just how warm the house is. They ask lots of questions about the heater. Most can’t quite wrap their head around the concept, but they do enjoy having a cup of tea and hanging out on the bench.

For the most part the stove is running pretty well. Checked the clean out area twice in the past month and a half, both times absolutely no build up. I read some people getting lots of ash. We do get a bit in the fire box. I clean out everyday. Insulated fire bricks in the floor seem to be holding up ok. Don’t think they are going to last forever, but should be fine for the season.

Cast a new back wall brick for the feed tube, a while back, out of left over castable refractory mix and risk husks. It’s not taking the brunt of the heat and at the moment it hasn’t cracked or spauled out. Think I might experiment with using the rice husks as a free alternative to perlite for in bell floor and backup insulation in some future builds. With no real price tag associated to the material I could see using 30cm-40cm rice husk & clay mix under floor. Could also use as a secondary insulation solution for around a batch box core. Make it super thick and see what happens.

All the pipes are now frozen in the house. Tried everything to get them back up and running, but really no avail. So at the moment we are living in a house with no running water, no toilet, and no shower, but we do have heat. If I had to choose one in the situation it would be heat every time. Other stuff is just luxury and we can sort it out in due time.

Started felling small trees and learning to properly sharpen and hang hand shaped handles for axes. This whole RMH thing just keeps snowballing with necessary skill sets. All of which I’ll be better for in the end.

Anyway, here’s a few photos of life in the north country.

Hip hip hooray… Peter and Co🏔😎🏔
(Hooray may also be spelled and pronounced hoorah, hurrah, hurray etc.)
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Front yard now
Front yard now
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Tools of the day
Tools of the day
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Rice husk brick drying for 14 days before putting in stove
Rice husk brick drying for 14 days before putting in stove
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Feed tube extension
Feed tube extension
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Water situation
Water situation
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Still splitting everyday and night
Still splitting everyday and night
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Snow off the roof
Snow off the roof
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Shaping
Shaping
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Hanging
Hanging
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Sometimes you need two
Sometimes you need two
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Mount Yotei near the house
Mount Yotei near the house
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Me getting kooky in the backyard
Me getting kooky in the backyard
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Chimi chilaxing🔥
Chimi chilaxing🔥
 
gardener
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Thank you for the great update! That frozen water situation looks rough! Is that space not in an insulated area, just too far from the heat? I once had a bathroom that was at a far corner of a house, over an uninsulated space that was too short to get into, and the water pipe could freeze unless I left the faucet slowly dripping or blew a space heater in (water was far cheaper). I wonder if one of those heat differential fans people put on their stoves could blow warm air from the top of the barrel over towards the sink to help any?

Recently EdibleAcres posted a little video on their wood splitting stump, perhaps it would save you from bending over a few thousand times a year and speed up kindling production? Essentially a stump with a few boards attached for a more stable base, and a small tire sitting loose on top that you pack with wood, then chop it all up before removing it:


I've also seen a person use a chain with a bungy cord on the end to hold the wood up instead of a tire and that is adjustable but you could hit the chain with the axe too.
 
pollinator
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Lovely looking mountain …..
 
Peter Sedgwick
pollinator
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Location: Toyoura Hokkaido
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Mark Brunnr wrote:Thank you for the great update! That frozen water situation looks rough! Is that space not in an insulated area, just too far from the heat? I once had a bathroom that was at a far corner of a house, over an uninsulated space that was too short to get into, and the water pipe could freeze unless I left the faucet slowly dripping or blew a space heater in (water was far cheaper). I wonder if one of those heat differential fans people put on their stoves could blow warm air from the top of the barrel over towards the sink to help any?

Recently EdibleAcres posted a little video on their wood splitting stump, perhaps it would save you from bending over a few thousand times a year and speed up kindling production? Essentially a stump with a few boards attached for a more stable base, and a small tire sitting loose on top that you pack with wood, then chop it all up before removing it:



I've also seen a person use a chain with a bungy cord on the end to hold the wood up instead of a tire and that is adjustable but you could hit the chain with the axe too.



Hey Mark!

Thanks for the comments.

As far as the frozen water thing goes you are correct, the pipes are located in the back part of the house, that really has very little insulation. I have wrapped the pipes with cable heater coils and insulated them, but to no avail. They will work for a day and then freeze back up. I’ve tried to do what I can in the present situation, but the overlaying issue seems to be that the shut off valve coming out of the ground, is broken. My shut off valve out side for the garden hose works, so when i flip it on and turn on the water it runs fine. I was at my wits end with it after 4 or 5 days or swapping out new pipes and dumping boiling water on them in hope of a miracle. In the end its just made me grumpy and annoyed, so I’ve opted to eat on tinfoil covered plates and go snowboarding instead. Deal with the issue when the weather lets up a bit.

With the wood splitting stuff, I have watched a bunch of those videos on tire builds and bungie-chain stuff. I was about to build a modified version of the tire rig, similar to what Wranglerstar (YouTube) has explained in his build. I like that one because It seem like it would be less of a hassle when it comes to cleaning out debris that build up inside the tire.  Seems like the bungie-chain would work well for taking apart large blocks of strain grained timber rather well.

To be honest, at the moment I’m processing wood of all different sizes and a number of different types, sometimes full of knots. I’m also teaching myself how the profile and sharpen axe heads. So the manual splitting process is helping me understand what geometry works for me in real time. Not just in theory or on the internet. I am starting to get a feeling of what edges will “bite” and what will “bounce” with the wood that I have. Part of that comes for repetition and muscle memory. It’s satisfying to feel the blade bite in and pop a piece of wood open. Then look at that wood and imaging it like a piece of a puzzle that will soon be fit into the feed tube of my RMH and become fuel to heat our space.

I’m far from a purist when it comes to this stuff and I’m all about short cuts, but the miles I’m putting in right now is teaching me so much. And it’s meditation….

Tire in the spring...

Peter
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Meditation
Meditation
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Seems to work
Seems to work
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Fire wood is down. Time to get more
Fire wood is down. Time to get more
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Snow clearing
Snow clearing
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Above the back windows about 2meters
Above the back windows about 2meters
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Peter Sedgwick
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Fox James wrote:Lovely looking mountain …..



It’s defiantly a powerful part of the landscape…
🏔😎🏔
 
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I wished we had a dump of snow!
 
Peter Sedgwick
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Location: Toyoura Hokkaido
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Satamax Antone wrote:I wished we had a dump of snow!



I feel your pain my friend…😎
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Satamax Antone
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Top of my lift a fortnight ago. It is a smidge better now, but barely!
 
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