Blacksmithing metalwork Anything involving penetration
Using nothing but castable refractory is not necessarily a bad idea. There are both insulating and non-insulating castable. Many people make crucible furnaces using nothing but castable sometimes all non-insulating that s fine especially say your burner is using waste motor oil and you are only dealing with aluminium or maybe bronze and
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Newbie question about insulation in propane forge
Jan 07 2012 · You should use a castable refactory to protect the blanket from the flame and flux and protect you from the floating ceramic fibers (read glass). You really dont want to be sucking glass fibers down deep in your lungs. Then paint an Infrared Reflective product (ITC 100 or Plistix) over the castable to increase the effencency of the forge.
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My forge isn t getting hot enough what can I do Blacksmith
My forge is a 5gallon air tank with 2 layers of 1"kaowool 1/3" castable refractory (kast-o-lite 30) to act as protection for the kaowool and 1/16" layer of plistix. With one 3/4" burner set at 3psi It gets to forging temp from cold in less than 10 minutes. And once at forging temp in the forge it
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Forge construction Cast or ceramic wool Tools and Tool
Jun 12 2008 · Posted May 29 2008 (edited) Excluding hard and soft firebrick there are three choices when talking about lining a forge hard castable lightweight insulating castable and ceramic fiber wool blanket. Each has its place and it s important to understand their strengths and weaknesses. When durability is a prime concern nothing comes close to
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The floor should be made of a piece of kiln shelf or half thick fire bricks. Later you may want to try a castable refactory which is more durable. Close it up Once the forge gets to red heat the main heat loss is through radiant heat.
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Mizzou Mixing Dry Out InstructionsHard Luck Forge
Start on the sides and top of the forge. Saving the bottom for last. Floors may be cast as thick as needed but coating over ceramic fiber blanket is a better insulator. You can always lay a piece of split firebrick over the coated fiber blanket. To maximise strength and density the castable should be placed using a minimum of water. Air Curing
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How to Make Refractory Cement 3 RecipesDELFT CLAY
Refractory Cement Recipe #1. Portland cement (You can purchase a 94 lb. bag at your local hardware store for less than 10.) Perlite (Can be purchased for 10 to 25.) Silica Sand (A 50 lb.bag costs less than 25.) Fire clay or Well drillers mud (A 50 lb. bag averages less than 10.) 1.5 parts Portland cement 2 parts Perlite 2 parts silica
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Burner flares Gas Forge Parts Gas forge Burners Ceramic
HarbisonWalker International Kast-O-lite 30 LI Insulating Castable Refractory This is a 3000 degree F High Alumina Insulating Castable Refractory for making forges. You can cast the entire refractory liner for a forge or just the floor using this material
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How thick should castable refractory be Blacksmith
Jul 07 2018 · Castable refractory is going to be a huge heat sink in the forge that will take forever to heat up. If you read the info at hightemptools and some other forge suppliers they recommend 1/8in. Definitely no more than 1/4in. That is what I did on my forge and it works great.
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Ceramic blanket vs refractoryInsulation and
Jan 15 2019 · On 7/27/2009 at 5 30 PM Dodge said I used 2" ceramic blanket coated with refractory mortar rated to 3200 f. The mortar is about a 1/4" thick and very hard. It prtects the blanket without the long heat up time inherent to solid refractories. Hence I have the best of both worlds.
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Find yourself some actual firebrick or castable refractory to form the forge walls and get ceramic blanket insulation (kaowool) with a refractory rated to over 2000F to spread on the surface of the kaowool on the inside of the forge to prevent the fibers from breaking off into the air.
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The Furnace Shell part 1 KcruciblePlaying With Fire
Aug 01 2010 · The furnace and shell are two parts of the same whole. A feature in the furnace makes its way into the shell. However since I m using castable insulating refractory and will need to make molds etc I m just going to break this up into individual elements. I got my initial inspiration from Lionel Oliver s Backyard Metalcasting
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Charcoal Grill Forge Become a Blacksmith on the Cheap 5
I spent a lot of time researching this before settling on a lightweight but somewhat weak (not very impact resistant) castable mix from Harbison Walker International that can operate up to 2300 degrees and has excellent insulating abilities. With the design as it is most of the refractory surface won t be exposed to temps even close to that.
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Newbie question about insulation in propane forge
Jan 07 2012 · You should use a castable refactory to protect the blanket from the flame and flux and protect you from the floating ceramic fibers (read glass). You really dont want to be sucking glass fibers down deep in your lungs. Then paint an Infrared Reflective product (ITC 100 or Plistix) over the castable to increase the effencency of the forge.
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Propane Forge Build KnifeDogs Forums
Dec 28 2019 · Hey I appreciate the good suggestions. I think I m going to use castable refractory cement and pour into a form creating a 5" inner core of refractory cement 5" thick. I ve used Koawool coated with refractory cement before with mixed results and think I d like to use this recommended approach this time.
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A uniform layer of clay about 1/2"3/4" (13 to 19 mm) thick would suffice. Many folks use a mixture of clay and refractory cement or castable refractory cement OR clay and portland cement to line their forges. This must be done carefully and with thought.
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Insulation Castable ManufacturingRS Refractory Castable
Apr 08 2020 · Insulation Castable Manufacturing. April 8 2020 by rsrefractorycastable. Insulation castable is composed of refractory aggregate powder binder and admixture. Compared with other unshaped refractory materials this series of insulation materials have higher binder and moisture content and better fluidity.
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Propane Forges. A Primer KnifeDogs Forums
Aug 31 2020 · The best coating that I have ever found is ITC-100." This is the Ceramic Fiber Blanket that has loose fibers is ITC-100 all that s required to seal it It doesn t require a thin coat of Kast-O-lite 30 LI Insulating Castable Refractory (or similar) as the first coat then the Kast-o-lite "painted" with ITC-100
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Best way to insulate a forge Beginners Place
Dec 03 2009 · Posted December 2 2009. All else equal the key to a hot forge is good insulation. Low thermal mass (i.e. not too much dense stuff in the forge) will help it get hot faster. Your Kaowool forge sounds about right -- most people seem to have pretty good luck with 2" of ceramic wool.
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3000 Degree Castable Refractory Castable Refractory Cement
LOUCAST 3000 Degree Castable Refractory is a dense castable refractory mortar rated for 3000˚F It is low iron content with high purity. This refractory mortar is designed to successfully withstand high sulphur fuel reducing atmospheres carbon deposition erosion and abrasion.
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What s wrong with my propane forge Blacksmith
Find yourself some actual firebrick or castable refractory to form the forge walls and get ceramic blanket insulation (kaowool) with a refractory rated to over 2000F to spread on the surface of the kaowool on the inside of the forge to prevent the fibers from breaking off into the air.
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2010 KcruciblePlaying With Fire Page 2
The Blacksmith Guide. By adding a less-insulated chamber over the top the exhaust gasses should be able to be used as a burn-out oven and pre-heater for investment flasks. By closing off the exhaust ports the chamber can be used for heat treatment. However since I m using castable insulating refractory and will need to make molds
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Building a Traditional Swordsmith ForgeCrossed Heart Forge
The walls should be close to 1 sun thick and the tuyere protrudes into the forge between 0.5 sun and a little less than 1 sun. The area around the tuyere is packed with similar material to seal the opening in the sidewall of the forge but should be designed for easy replacement when the tuyere wears out.
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Building Multi Purpose ForgeBeginners Place
Feb 12 2016 · insulation for gas forges is Kaowool ( 7 sq ft)-- covered with a refractory to protect it. you need 1-2" layer of the kaowool around the full interior of your forge (which i think 55g steel drum is far too large for efficient smaller work) A hybrid forge is an interesting idea but when starting out simplicity is
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ITC-100 Refractory Coating for Forge EfficiencyMoose Forge
Invented by Feriz Delkic founder of International Technical Ceramics ITC-100 has been been used by the ceramics industry for over 25 years. This versatile high temperature ceramic coating can be applied to a variety of gas forge materials ceramic fiber blanket fiber board refractory brick and castable refractories.
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Forge Building And Lining Info FAQHard Luck Forge Supply
Q Will flux damage the castable refractory A Yes. Flux will damage castable refractory. Some more than others. Greencast94 is the most flux resisant castable we carry if your going to be doing a lot of forge welding or are building a ribbon burner forge we recommend using it to cast your floor.
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Refractory Fire Bricks Kiln Building Fire Brick
Kiln building refractory fire bricks blocks and tiles are stacked to form insulating furnaces boilers or other thermal process vessel walls. The refractory fire bricks are usually cemented together with refractory mortar. Shown top is a new gas kiln made with soft refractory fire bricks from Sheffield Pottery by John Zetner of New Hampshire
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Build a simple casting furnace — The Shed
Jul 04 2017 · Line the base of the drum with 100mm of refractory concrete setting a firebrick standing on end in the centre. This will provide the base to stand the crucible on. The drum is then lined with lightweight insulating bricks or a 75mm thick layer of insulating mix comprising two (2) parts coarse vermiculite four (4) parts sand and one (1) part
Get Price2010 KcruciblePlaying With Fire Page 2
The Blacksmith Guide. By adding a less-insulated chamber over the top the exhaust gasses should be able to be used as a burn-out oven and pre-heater for investment flasks. By closing off the exhaust ports the chamber can be used for heat treatment. However since I m using castable insulating refractory and will need to make molds
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