I started with sodium silicate and perlite castable refractory but ultimately I couldn't get them hot enough. I make fire clay these days. With as much sand as it can hold. You can make bricks or even crucibles from it and when they die, crush them and use them instead of the sand. Portland and clay is also good for bricks. Adding sawdust to bricks or custom shapes burns away leaving voids, and that porosity makes for good insulation. Its pretty much what kilns are made from. Aircrete with clay in it is great too if you can work out the scaling. That's for sure the cheapest but better for the outer layer and not so much right in the hot part. Fire Clay Ingredients like Calcined Alumina, Ball Clay, China Clay, can be purchased from pottery supplies. Not cheap but will make you super duty refractories that will hold up to >2000˚C Silica Sand is cheap from garden supplies. Adding feldspar reduces porosity and vitrifies. And try clay from your own area first. You can be lucky and find one that doesn't melt at
What mixture can I use if I don't have access to fireclay? I have access to kaowool, hydrated lime, cement, sand, perlite and might be able to find silica sand and vermiculite A Mixture for firebricks, and a mixture for fire mortar
I'd recomend making them thinner and adding a coting of sodium silicate with magnesium oxide. You can make magnesium oxide by calcinating dolomite or that chalk that bodybuilders use. The cement is not a good idea because above 900cº it looses it's integrety since it calcines. I'd recomend a layer of pure clay, then a layer of clay rich with organic matter ( something like kaolin and chopped up straw) then a layer of magnisia, the two last layers should be binded with sodium silicate. A
You used an alumnium pan to cook caustic soda? I'm surprised it still has a bottom! I guess the non-stick coating slowed it down? Silica gel cat litter disolves fairly quickly in caustic soda + water - it heats itself. I've made water-glass in a glass instant coffee jar in the past.
Good ways to cause an explosion, adding water to that lye Also make sure everyone knows only do this outside, especially if you’re doing it with a aluminum pan because if you avoid the exploding by pouring the water quick enough, the dangerous fumes will get you if you stand too close to them😂 great video thank you for sharing Will definitely be saving this Now to figure out where to get the silica gel from, lye I have gallons of😂
Somebody on UA-cam finally made real refractory. Many "make firebrick" recipes on UA-cam are terrible. You can't just mix perlite and vermiculite with Portland and call it refactory! Calcium aluminate CA cement is best, but if you are not a big "industry buyer," it's very hard to get and not sold anywhere. "Rapidset" brand cement in Home Depot is, I think, Calcium Sodium Aluminate and probably won't hold up to massive temps like Calcium Alumiate will, although it has not broken down for me when I burned the Rapidset... but........ I have NOT given it a torture test... not even close. Waterglass recipes also show promise.
RONDO HEAT BRICKS is a new heat storage product for industrial users. I was thinking that a home DIY would be interesting. They are meant to heat with rooftop PV electricity and hold the heat to evening to area heat the home. Or heat water, continuous hotwater when needed. Would it be simple enough to do ??
i have a question. why did u use equal parts silicon dioxide and sodium hydroxyd. since the reaction is SiO2+2(NaOH)+H2O-->Na2SiO3+2(H2O) why woulnt you use a ratio of ( 0.6 Silica Gel ml:1sodium hydroxide ml) aka (0.6mlsi:1mlNa) for it to fully react? is there any benifit to having it 1:1?. i got my volumes from using the densities of the molecules SiO2=2.7g/ml NaOH=2.13g/ml
I don't think portland cement was a good idea. Just clay brick meal would do. Or possibly ready made schamotte bricks would do, as they are used to line the insde of furnaces.
I thought that was an aluminum pot ~2:00 min. That's a REALLY bad idea as cold lye reacts vigorously with aluminum, much less hot lye! And DO NOT do this reaction as shown as you likely will lose skin on your hands, your lungs, and your eyesight when it erupts in your face. I never mix lye with COLD water (for soap making) much less with hot water -- I use half ice so it doesn't erupt. Even then it emits caustic fumes that irritate and which could destroy one's lungs if in sufficient amount. Furthermore, solid lye can ulcerate the skin almost painlessly (till too late). Lye CAN be worked with safely, but not as shown here. Those bricks should have been heated slowly, say with a wood fire, to eliminate free moisture. Spalling can result from not doing so. A thin stainless steel tray can be used on the inside of the forge to catch borax, or any other, flux to protect the refractories.
Fantastic guide. Thanks for posting. Remember tonight is spaghetti night, so make sure that pot makes it back to the kitchen.
Simple to the point info, without all the goofy youtube wank. Thanks!
Not much wank happening here
Swap a large part of the sand for silica sand instead and introduce aluminium oxide at as much you can bind
Will resist the boric acid alot better.
Interesting, thanks for the tip
I started with sodium silicate and perlite castable refractory but ultimately I couldn't get them hot enough. I make fire clay these days. With as much sand as it can hold. You can make bricks or even crucibles from it and when they die, crush them and use them instead of the sand. Portland and clay is also good for bricks. Adding sawdust to bricks or custom shapes burns away leaving voids, and that porosity makes for good insulation. Its pretty much what kilns are made from.
Aircrete with clay in it is great too if you can work out the scaling. That's for sure the cheapest but better for the outer layer and not so much right in the hot part. Fire Clay Ingredients like Calcined Alumina, Ball Clay, China Clay, can be purchased from pottery supplies. Not cheap but will make you super duty refractories that will hold up to >2000˚C Silica Sand is cheap from garden supplies. Adding feldspar reduces porosity and vitrifies. And try clay from your own area first. You can be lucky and find one that doesn't melt at
What mixture can I use if I don't have access to fireclay?
I have access to kaowool, hydrated lime, cement, sand, perlite
and might be able to find silica sand and vermiculite
A Mixture for firebricks, and a mixture for fire mortar
I had no idea you could do this! Thank you!
I'd recomend making them thinner and adding a coting of sodium silicate with magnesium oxide. You can make magnesium oxide by calcinating dolomite or that chalk that bodybuilders use. The cement is not a good idea because above 900cº it looses it's integrety since it calcines. I'd recomend a layer of pure clay, then a layer of clay rich with organic matter ( something like kaolin and chopped up straw) then a layer of magnisia, the two last layers should be binded with sodium silicate.
A
You used an alumnium pan to cook caustic soda? I'm surprised it still has a bottom! I guess the non-stick coating slowed it down? Silica gel cat litter disolves fairly quickly in caustic soda + water - it heats itself. I've made water-glass in a glass instant coffee jar in the past.
Cutting that anvil's tip was a crime! Poor thing!
Don't worry, it wasn't me!
Sometimes, you just need a little extra steel.
Drunk hunter thought he shot a rhino.
@@khaitomretrolol... This shouldn't have been funny enough to snort coffee...
But here we are, Khaitom
@@makeitquick9638I'm sure there was a contextually sensible reason for that crime against smithys
I picked up a large bag of "Fire Clay" from an estate sale. Can I make refractory bricks with it?
Good ways to cause an explosion, adding water to that lye
Also make sure everyone knows only do this outside, especially if you’re doing it with a aluminum pan because if you avoid the exploding by pouring the water quick enough, the dangerous fumes will get you if you stand too close to them😂
great video thank you for sharing
Will definitely be saving this
Now to figure out where to get the silica gel from, lye I have gallons of😂
Thanks for the video.
nice when I have the time I'm going to make a few to test them out🔥🔥🔥
Fantastic dude
Excellent 👍
Please take another look at how to use a tablesaw safely. Cross cutting freehand like that is asking to lose a finger if you're lucky.
That's dope!
Thank you.
1:03 Fun fact: Pill bugs are not actually insects, they're crustaceans.
Oh well, should've left it in then
@@makeitquick9638 :(
@@makeitquick9638 Next video: the proper proportion of pill bugs in your refractory cement mix.
@@makeitquick9638 Thought one only uses fire-ants as an insect-insert for fire-bricks.....
Rather than making your own sodium silicate is it okay to use ready made one that’s 40% water
I believe that should be fine
Somebody on UA-cam finally made real refractory. Many "make firebrick" recipes on UA-cam are terrible. You can't just mix perlite and vermiculite with Portland and call it refactory! Calcium aluminate CA cement is best, but if you are not a big "industry buyer," it's very hard to get and not sold anywhere. "Rapidset" brand cement in Home Depot is, I think, Calcium Sodium Aluminate and probably won't hold up to massive temps like Calcium Alumiate will, although it has not broken down for me when I burned the Rapidset... but........ I have NOT given it a torture test... not even close. Waterglass recipes also show promise.
Those dammed anvil poachers.
That anvil losing it's horn is a travesty.
I would like to make a slab to use aw a base for a fire place. Do you think this is a good mix? Could this work with some kind of rebar reinforcement?
RONDO HEAT BRICKS is a new heat storage product for industrial users.
I was thinking that a home DIY would be interesting.
They are meant to heat with rooftop PV electricity and hold the heat to evening to area heat the home.
Or heat water, continuous hotwater when needed.
Would it be simple enough to do ??
fly ash ,red clay washed or Cat litter , fine washed sand. sodium silicate semi dry mix ,thanks
i have a question. why did u use equal parts silicon dioxide and sodium hydroxyd. since the reaction is SiO2+2(NaOH)+H2O-->Na2SiO3+2(H2O) why woulnt you use a ratio of ( 0.6 Silica Gel ml:1sodium hydroxide ml) aka (0.6mlsi:1mlNa) for it to fully react? is there any benifit to having it 1:1?. i got my volumes from using the densities of the molecules SiO2=2.7g/ml NaOH=2.13g/ml
Fyi..
Do not use an aluminum pan to make sodium silicate
Based on your vid, 6 years ago, you dont you and of those sodium silicate, just cement sand and aggregate
Wonder what works best THX
I don't think portland cement was a good idea. Just clay brick meal would do.
Or possibly ready made schamotte bricks would do, as they are used to line the insde of furnaces.
Aluminum + lye = very flammable hydrogen gas, always add lye into water not vise versa, otherwise a great guide mate looks great!
Alumina fibre/Aluminum silicate goes a long way.
I thought that was an aluminum pot ~2:00 min. That's a REALLY bad idea as cold lye reacts vigorously with aluminum, much less hot lye!
And DO NOT do this reaction as shown as you likely will lose skin on your hands, your lungs, and your eyesight when it erupts in your face. I never mix lye with COLD water (for soap making) much less with hot water -- I use half ice so it doesn't erupt. Even then it emits caustic fumes that irritate and which could destroy one's lungs if in sufficient amount. Furthermore, solid lye can ulcerate the skin almost painlessly (till too late). Lye CAN be worked with safely, but not as shown here.
Those bricks should have been heated slowly, say with a wood fire, to eliminate free moisture. Spalling can result from not doing so.
A thin stainless steel tray can be used on the inside of the forge to catch borax, or any other, flux to protect the refractories.
What was done to that anvil is like a circumcision gone wrong.....
Prob could have used biochar instead of peralite but not an expert