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Rigidizer 16oz Concentrate | for Hero 2 & Maker | Made in USA | Forge Foundry Furnace Insulation Blanket Superwool LBP Ceramic RCF

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Availability: In Stock.
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Arrives Monday, Mar 23
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Features

  • Mr Volcano Rigidizer 16oz Concentrate - Winterized solution = Will not freeze in colder temperatures
  • Locks down fibers & toughens your liner: Colloidalsilica rigidizer penetrates ceramic fiber blanket to create a harder, more erosionresistant surface that helps keep fibers in place and provides a better base for refractory coatings.
  • Simple mix, easy apply: Dilute the 16 oz concentrate 1:1 with water to make 32 oz; spray or brush onto prewetted insulation. The solution is tinted so you can see coverage; dry by air or low, repeated heat cycles per instructions.
  • Enough to cover 2x Mr Volcano Hero single burners or 1x Mr Volcano Hero 2 double burner forge.
  • Great prep for refractory coatings: Common practice is: Wool Rigidizer Thin refractory mortar (e.g., Satanite) Optional IR topcoat. A rigidized surface helps subsequent coats bond and hold up under flame velocity.
  • Made in USA

Description

Get a tougher, more durable fiber liner—fast. MR VOLCANO Rigidizer is a colloidal-silica concentrate that soaks into ceramic fiber, cures to a firm surface, and helps reduce fiber disturbance under flame. It’s an easy, proven way to prep your liner before adding a thin refractory coat. The mix-1:1 formula makes 32 oz and is tinted so you can easily confirm full coverage.What people usually try — and why it falls shortRunning bare wool (no rigidizer): Uncoated fiber blankets are easily eroded by flame and handling. Solution: This rigidizer hardens the exposed surface to resist erosion and helps lock down loose fibers.DIY “waterglass” (sodium silicate) spray: Waterglass can form a glassy layer with relatively low softening temperature for forge interiors. Solution: A purpose-made colloidal-silica rigidizer is formulated for fiber linings in high-velocity flame environments.Skipping rigidizer and going straight to mortar: Applying refractory mortar to fluffy fiber can lead to weak spots and flaking. Solution: Rigidize first, then apply thin refractory coats for better adhesion and durability.Heavy castable layers: Thick castables add weight and thermal mass, slow heat-up, and reduce chamber volume. Solution: Rigidize the wool and keep refractory layers thin to preserve fast heat-up.Why this formula is easier in the shopMix 1:1 (makes 32 oz): Simple measuring and coverage. The red tint helps you see what you’ve hit—don’t use color as a dryness indicator.Freeze-resistant: Designed to resist freezing for better handling in cold conditions.Works with Superwool (AES) & RCF: Compatible across common insulation blankets used in forges, furnaces, and foundries.How to Use (summary)Prep the blanket: Lay out insulation, wear PPE, and lightly pre-wet with clean water (mist—don’t soak).Mix: Combine 16 oz concentrate + 16 oz water (shake ~45 sec).Apply: Spray or brush to fully wet all faces of the blanket (use the tint to verify coverage).Install & dry: Fit the blanket while still damp, then air-dry 24–48 hrs or run several brief, low-pressure heat cycles to drive off moisture before any refractory layers. Ensure it’s rigid and dry before coating.Tip: After rigidizing, apply thin coats of refractory (e.g., Satanite) and cure per instructions for a tougher hot face.Specs & CompatibilityType: Colloidal- silica rigidizer for ceramic fiber blankets/modules.Form: 16 oz concentrate → 32 oz when mixed 1:1 with water.Use on: Superwool (AES) & RCF blankets.Application: Spray or brush; freeze-resistant formulation.Made in USA.What’s in the Box(1) MR VOLCANO Rigidizer, 16 oz Concentrate (mix 1:1 with water to make 32 oz).

Material: Superwool LBP or Ceramic RCF


Color: Red


Brand: MR VOLCANO


Special Feature: Winterized solution will not freeze in colder temperatures, Made in USA


Style: Modern


Material: Superwool LBP or Ceramic RCF


Color: Red


Brand: MR VOLCANO


Special Feature: Winterized solution will not freeze in colder temperatures, Made in USA


Style: Modern


Blanket Form: Single Layered Blanket


Age Range (Description): Adult


Theme: Plain


Pattern: Solid


Recommended Uses For Product: Forge foundry furnace insulation blanket hardening


Seasons: Winter


Product Care Instructions: Hand Wash Only


Unit Count: 1 Count


Number of Items: 1


Item Weight: 16 Ounces


Model Name: Mr Volcano Hero 2


UPC: 638126405104


Manufacturer: MRVS


Package Dimensions: 7.87 x 2.44 x 2.4 inches


Item Weight: 1 pounds


Item model number: MV-005


Date First Available: January 5, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Mar 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews


  • It’s a good product for the quality/price it offers.
The MR VOLCANO rigidizer fulfills its purpose, which is to keep the ceramic wool firm and prevent it from coming loose, whether due to tearing or wear. The full container is enough for two applications. If you bought it for use in your forge, simply use half the container. Add water based on the proportions specified in the manual, and spray it with an atomizer. The ceramic blanket will be ready once it is soaked or superficially wet. Do not use the entire product on the ceramic blanket; just use half and spray it lightly. Then, let the ceramic blanket air dry for a full day (24 hours). If it still feels a bit damp, use a heat gun or, in my case, a hairdryer. It’s worth mentioning that if you didn’t understand how to spray it lightly, the product has a red tint. Simply spray the product mixed with water onto the ceramic blanket using the atomizer. Once you see the ceramic blanket completely red on both sides, you’ll know the product has been fully incorporated. Good luck with your project ... show more
Reviewed in the United States on January 19, 2025 by Justin

  • Works well
Good
Reviewed in the United States on February 13, 2026 by M

  • Great product
Great product i waited around two days for it dry completely before using the furnace.
Reviewed in the United States on March 4, 2026 by Allenflores

  • Best Rigidiser ive used
Mixed 1 to 1 with water and coated my smelter and forge to the point you couldnt see anymore white just the dye from it. Waited about 5 days before the dye was gone and the feel was no longer wet. Which i applied to much is why my wait was more than 24hrs lessons learned. But ive fired my forge and smelter a ton of times since then and no problems. Ive used other rigidizer in the past they didnt do as good as mr volcano rigidiser so i will be sticking with it for the forseeable future ... show more
Reviewed in the United States on October 12, 2025 by DantheUndead

  • Okay rigidizer, but the leaky bottle was not good.
I sprayed a half water and half rigidizer mix on my kaowool forge material as directed and it seems to have done a decent job of stiffening and containing fibers. My complaint is that it was contained in a poorly closed and leaking plastic bottle which was shipped in a box with a pair of pants. It was pure luck that the plastic wrapper of the pants prevented the goo from ruining the pants. There was some loss of the rigidizer fluid, but not quite enough to warrant sending it all back. A plastic or aluminum protective seal under the screw cap is strongly advised. ... show more
Reviewed in the United States on February 13, 2025 by Rabby Tat

  • Despite the description, it will freeze
I’ll give the product 5 stars because I’ve used it before on a Mr Volcano forge and know it does the job and holds up. As far as the product description goes, this rigidizer will absolutely freeze. Fortunately I got to mine before the plastic bottle burst. It even says on the label to NOT let it freeze. ... show more
Reviewed in the United States on February 8, 2026 by Mike

  • Rigidizer for a forge
One of two required products to set up a portable blacksmith forge. It does the job for which it was designed.
Reviewed in the United States on March 2, 2026 by AerinMacV

  • Rigidizer
Easy to use work as intended for my Forge
Reviewed in the United States on January 21, 2026 by Amazon Customer

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