Joe Sabourin

Yes I read a lot of the .eu site you listed , I like the casting options there then I saw the recent videos of the Glowstove 2, this is different than the batch box that works with wood stove draft control down low on the door, the Glowstove 2 uses low side draft with fan foced draft to increase internal temps and natural draft no fan boost to give a longer burn time. secondary air is thru the thick door just in front of the firebox exaust in the fire box roof.  Here oservation and a better infrared temp meter show a marked improvement in the box.

I'm still new here and am looking for ways to improve the batch box idea to incorporate other ideas to raise the burn box temps and improve the internal burn even more than what they seem capable of.  Looking to raise box temps high enough to give complete secondary burn as gasses leave the batch box to the riser this could make for an even better burn to make one of the safest wood burning devices made and give inspectors something to fight to incorporate in all wood devices.  Evolution is always growing better or failing and trying again.

I took a close look at the glowstove fire box, low burn in the  box is provided by natural draft to the floor of the burn box, high burn is same air inputs to forced air with a micro fan hotter, shorter burn time, my observation of video's online.   Tight  sealed door on batch box and feed the box the same way will increase the internal temp for improved more complete burn in the batch box before exit to the riser.  Glow box secondary air comes from high holes on the top of the door in the glowstove instead of secondary tube directed to the exit of the batch burn chamber into the riser.

Byron Campbell wrote:Hi Joe, Welcome to Permies.

Casting makes sense, especially if you're planning on building more than one core. But the time in making forms, and dealing with a homebrew mix of refractory to get it just right, and procuring or building a vibrating-platform to settle the mix into the forms, is for most folks a great deal more time consuming than say, just picking up a couple of boxes of insulating fire brick (i.e. IFB, ~2300° F) and building an all brick batch box with heat riser.

An example of Peter van den Berg's "batchbox" in brick is attached below, a 6-inch system-size constructed from fire brick. I built mine with standard (dense) fire brick for the firebox, and IFB for the heat riser. Makes for a very rugged trouble free stove that takes a beating and keeps on going for years and years.

But it depends on what you're after, as to what you build, and what you're intending on heating -- shop, out-building, living quarters, etc.

I'm very interested in the performance of the glow stoves ultra high heat retention in a cast batchbox to a cast riser with 2 inch refractory surround crushed fire brick sand or  volcanic rock crushed and mixed with high heat refractory mix for heat retention and the 100% use of my wood or as close as possible, think glow batchbox riser one piece, casting would be the best way and one off could change very quickly to open source plans, eventually for use in house with approval of local inspectors and insurance requirements.  END GOAL

Old army, biker, mechanic, trucker,  prospector (gold), crappy welder fussy with the milling machine and 72 year old lathe, old tools up the hoop, cheap but thrifty, yard full of junk metal
I'm 3 months older than the lathe but it's in better shape but I'm working on it.

I have a question on casting a batchbox rocket lower and riser combinations made with crushed fire brick sand and refractory mortar, I also have a jaw crusher for prospecting for gold extraction from rocks. So the fire brick pot liners I have more than 30 of would be easy to convert to fire brick sand for free except for my sweat equity.

I do like the glowstove 2 design batch box, with full ceramic batch box and riser but 900 lbs is a bit excessive in my mind.  But you can't deny the full use of fuel to all but micro fly ash and 12-14 hundred F.  
Another is the liberator 2 with ceramic fire chamber and riser and UL ratings for home use and mass heater use.  And a larger than I want to pay price tag (Did I say Cheap, yes)