Reddit reviews CM-Ceramics 31" X 24" X 1" 2400 F Ceramic Fiber Insulation Blanket 8# Pound Morgan Ceramics for Forges, Kilns, Stoves. Knife Included Made in The USA
We found 5 Reddit comments about CM-Ceramics 31" X 24" X 1" 2400 F Ceramic Fiber Insulation Blanket 8# Pound Morgan Ceramics for Forges, Kilns, Stoves. Knife Included Made in The USA. Here are the top ones, ranked by their Reddit score.
SPECIFICATIONS: Morgan Ceramics (31" x 24" x 1") 2400 F Tough, Dense 8 Pound High Temp Insulation.INFO: Data Sheets and Safety Instructions Included.KNIFE INCLUDED: CM-Ceramics Knife So You Don't Ruin Your Blade.USES: Perfect Insulation for Home Foundries, Forges, Kilns, Blacksmiths, Knife Making, Glass Blowing, Bead Making & Many More.SOURCE: Made in the USA.
Are you referring to the white ceramic blanket that's on top of the baffle?
Your stove looks like my QuadraFire 3100, which has those same three secondary air tubes at the ceiling, then a thick (like 3/8 or 1/2") plate steel baffle over those, and finally the ceramic blanket laying on top of that. I kind of looks like you're missing the steel baffle though? It's hard to tell. I've seen some designs where the baffle is accomplished with fire bricks that are laid between 2 or 3 rails.
Lots of places online. Its also called Ceramic Fiber Insulation Blanket amazon
Frono bravo
Hey man, I know what it's like to make videos and get knocked on. I'm actually an 11 year manufacturing engineer who's poured molten metal on an industrial level, hundreds of thousands of pounds worth. I've Programmed and ran CNC machines, cut metals, drill welding, worked with water tools, abrasive tools, etc.
I've been trained by my grandfather who's been pouring metal since the 50's and my father who's been doing it since the 70's. Along with another half dozen men who all have a minimum of 20 years experience in industrial manufacturing. I'm going to give you some practical advice on how you could drastically improve your safety.
 
If you are still using that furnace, please throw it out and remake it so my grandfather can stop rolling in his grave. Use one of these materials;
Fine Kiln dried lapis sand
Silica Sand 6lbs
2200deg Rutland castable cement Fire Clay
25lbs Rutland castable cement
Kaowool Insulation Blanket
Your best bet is to use silica sand but it's typically more expensive, however it will last the longest. The refractory is really where the durability is. I'd experiment with different types, you could even try adding in fiberglass reinforcement which may increase durability. Oh and here is a K-type thermometer. You can buy some thermocouple leads and figure out the math to accurately measure your burn temperatures so you don't over oxides your metals.
And honestly, if it was me, I'd remove that video and remake it. Someone will watch that video, go out and buy cement and one day it will explode on them. That's an extremely dangerous way to make a furnace.
 
The way you set up that cuttoff wheel.... smh. Please don't do that. Also I'm sure you already read the comments but there are times when to wear gloves and when not to wear gloves. You need to use a vice or clamp any time you can if it means avoiding using gloves when using a high-speed cutter of any kind. Especially if it's a wheel. Again, it only takes once.
 
 
Overall man I like your videos but in my opinion of everyone DIY'er i watch on youtube, you are hands down the lease safe. I usually spot something you did wrong in every video you post. Whether you feel responsible for your viewers and what they do with the information you give them, is up to you. I just figured I'd give you some pragmatic advice from someone who does this stuff for a living. I actually did a few youtube videos about 6 years ago on my Channel over industrial level green sand. I'm planning on quitting my job within the next mont or two to start my own workshop/foundry/DIY/Youtube/website marketing thing from scratch. Let me know if you have any questions and I'll gladly answer them.
Here's some random tips;
Don't use pop can metal for anything structural. It's 3000's series aluminum and it's mades specifically to be malleable. Good rule of thumb for scrap metal is, if it came from something cheap, the metals cheap. The highest quality aluminum you can get for CASTING is automotive parts. Typically made from A356-T6, very good aluminum. I see a lot of guys metal down "Aircraft" or "Aerospace grade" aluminum for casting thinking it's going to be strong. It will not be, 6000 or 7000 series aluminum is all wrought/worked aluminum. It gets it's strength from massive presses that squeeze the metal into shape. Once you heat it up it looses all that strength.
T6 heat treat is the most common treat process for aluminum. If you are making something structural, heat treatment will greatly increase it's strength. But you have to use the correct aluminum for or it can't be treated (Automotive parts/A356). The process is usually 8hrs at 800-1000F then either a quench/2hrs at 300F or age hardening. With that K type thermometer you can easily set up your furnace to heat treat. Also, most aluminum age hardens once poured, usually around 21 days.
Please never wear shorts ever again when working with molten metal. It's not that it will burn your leg. It's that it will hit your leg, then fall into you shoe. Then you have a burning foot and a ladle of molten metal in your hand. I've done this with high top boots and jeans on. My father would fire my on the spot if he ever saw me pouring with shorts on. I saw a guy poure about 2lbs of aluminum into his boot once. 6 years later his still on disability. Please don't ever do it again.
Random informational videos
Metallugical nature of Aluminum and crystalizing structures
Grain Structure of Metal
Cold work vs Hot work metal. E.I. this is wrought metal like 3000, 6000 & 7000 series aluminum
Cermaic Material for Furnace Insulation
For rotational molding, you probably won't breach 600 degrees- get some sheet aluminum and some ceramic insulation. http://www.amazon.com/Ceramic-Insulation-Blanket-Quadrafire-Stoves/dp/B00GT5Q6X0 is about the right material, by the sound of it.
You need insulating fire bricks not the hard fire bricks. Hard fire bricks have very little insulating value.
K23 firebricks work good. If you are wanting to build it more like a forge than go with ceramic fiber insulation. Line inside so it is 2" thick and coat with satanite.