Post by jeppe on Jul 29, 2015 5:04:38 GMT -8
Hello all
i am casting a "peterperg" batchbox and have finished my mold now. (I was so lucky to spend a few days with Peter in Warsaw last month)
my goal for this stove is to test and play with different casting-materials, but of course i'd like it to turn out working and durable and capable of handling the high temperatures.
I have been watching Dave's and Matt's homecast mixes for stoves, and I am pretty fascinated with them, although it seems dave's perlite/clay/waterglass-riser didnt make the final heat test in the kiln.
I have the following materials at hand:
20 kg claypowder
25 kg fire cement
15-25 liters of perlite (fine particles)
50 kg of premixed refractory (hasle BS1200)
A big supply of the pictured mix (ingredients listed on the bags says: pumice/zeolites/leca/vulcanic rock)
Originally I wanted to go with Daves mix (15 perlite/2 clay/2 firecement/ 1 waterglass) but then figured I would go with a less insulated burnchamber to allow for stronger durability, and then later play with Daves mix in the riser.
So for the burnchamber mix i have a couple of possibilities/theories:
1) 50% Dave's mix and 50% commercial refractory mix ( this would allow for more heat resistant materials in between the lightweight perlite mix, so even when the Perlite starts loosing its structural strength around 800c there is still walls of something stronger around the perlite)
2) Since I have a lot of the "pumice"-material (pictured) around, and I believe pumice and zeolites might be a little more heat tolerant then perlite, I'd like to include that in the mix as well as a filler. The thing I am wondering is if the particle size is right? Wondering what Karl thinks? :-)
also, has anyone tried commercial refractory mix, mixed with insulators like perlite? What are the limitations ?
would anyone chime in and say go or no-go to my ideas?
:-)
Jeppe
i am casting a "peterperg" batchbox and have finished my mold now. (I was so lucky to spend a few days with Peter in Warsaw last month)
my goal for this stove is to test and play with different casting-materials, but of course i'd like it to turn out working and durable and capable of handling the high temperatures.
I have been watching Dave's and Matt's homecast mixes for stoves, and I am pretty fascinated with them, although it seems dave's perlite/clay/waterglass-riser didnt make the final heat test in the kiln.
I have the following materials at hand:
20 kg claypowder
25 kg fire cement
15-25 liters of perlite (fine particles)
50 kg of premixed refractory (hasle BS1200)
A big supply of the pictured mix (ingredients listed on the bags says: pumice/zeolites/leca/vulcanic rock)
Originally I wanted to go with Daves mix (15 perlite/2 clay/2 firecement/ 1 waterglass) but then figured I would go with a less insulated burnchamber to allow for stronger durability, and then later play with Daves mix in the riser.
So for the burnchamber mix i have a couple of possibilities/theories:
1) 50% Dave's mix and 50% commercial refractory mix ( this would allow for more heat resistant materials in between the lightweight perlite mix, so even when the Perlite starts loosing its structural strength around 800c there is still walls of something stronger around the perlite)
2) Since I have a lot of the "pumice"-material (pictured) around, and I believe pumice and zeolites might be a little more heat tolerant then perlite, I'd like to include that in the mix as well as a filler. The thing I am wondering is if the particle size is right? Wondering what Karl thinks? :-)
also, has anyone tried commercial refractory mix, mixed with insulators like perlite? What are the limitations ?
would anyone chime in and say go or no-go to my ideas?
:-)
Jeppe
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