Gerry Parent

Hi Sunny,
A lot of woodstoves have a firebrick liner that both protects the metal body of the stove and helps to hold some heat as thermal mass.
They are considered a wearable part that need to be replaced every so often. Yours look like they fit this bill.
You can purchase firebrick 'splits' at hardware stores, masonry yards, woodstove shops, online.....  

What a wonderful house warming celebration to have in your new location!  I'm a bit jealous :)

jordan barton wrote:So spent the day making up cob to seal up the feedtube/burn tunnel. Spent quite some time coming up with the best method for cutting the ceramic wool. I wish it came in different sizes, as I end up with a bunch of offcuts. 8" x 15", 8" x 12". Hope they are useful in the future.

What method did you find worked best to cut the wool?
I wouldn't look past butting up two pieces to cover a larger area. Smaller ones make great gasket material.  

jordan barton wrote: Luckily I was able to find the perfect soil for making the cob. I didn't need to screen it or add anything, besides the wheat straw. I usually look for soil that has bug holes in it on the surface. I imagine its mason bee holes, but its probably not. Eitherway I enjoy looking for good soil.

Interesting observation looking for bug holes to locate clay rich soil. Each area has its own tells.....looks like you found yours.

That's one thing I really love about these stoves is that they are so flexible to meet your current needs and adaptable to expand into new ones.
Good luck with the rest of your move and getting your J back in operation.

Hey Jordan,
Nice rebuild with all the same materials....even the mud! (reminds me too of the good ole days where local clay or even purchased was hard to find for a Canuck).
Happy to see that your still enjoying your J tube where the urge to switch (maybe later for lack of time right now?) to a different style didn't sway you.
 
Question: In one of your teardown photos, it appeared that the plunge tube in the bell was not insulated. Did you find having the exhaust absorbing the heat necessary for better draft or just didn't have enough room in your tiny home to keep it entirely out of the bell?

Most welders have a chart that gives recommendations for wire speed and amps for the thickness of the metal your working with.
Other than that, watching some videos and experimenting on a scrap piece will teach you lots.

Thanks for the update Matthias.
Always good to hear back on an experiment.....good or bad.
In your case, I'd call it a success.
Nice stove by the way.  

kees ijpelaar wrote:I did test the rocket with wood, it did blow back, and was not without smell.

I did test it without a shimney so I think I do need really a shimney to let it
word properly, wind blows into the connection now.

is this the problem with smoke is visible.

https://youtu.be/GIhaeVGO5pA

regards

Hi Kees,

Although the stove will operate without a chimney, it will definitely improve with one. Smoke and smell will go away and the fire should blaze much stronger with the added draft.
Side note: If you were to remove the barrel covering the heat riser, the same thing would happen. This proves that its not the stove core that's burning inefficiently, but rather the change in direction of the exhaust that put friction on the gas flow and slowing the combustion to not achieve clean burning rocket speeds.  

Getting back into the swing of laying bricks took a bit of time to remember some of the tricks I learned on the first go in Toms house but this time, having a laser line to help guide the placement has been a big help. Not having to pick up the level so often has been nice.

Creating the gap between the two brick walls was at first a bit concerning since I have never done a double skin before and was wondering if too much mortar would fall and partially refill the gap I was trying to maintain. Using a spacer inbetween for me kept getting in the way so I just learned to do it freehand and didn't worry about it.
Turns out, not enough fell to really matter. After the 4th double row, I feel like I'll just keep up with the same  technique unless something else presents itself to try.
Tomorrow things should go a bit faster as Tom and I get back into the swing of slinging bricks and mortar.

Takes a lot of 'friends' to keep you warm all winter long  but each one will pull its weight in gold when its below 0.