Razzo Mineral Casting Compound Kits

FREQUENTLY ASKED QUESTIONS

• Is Razzo the same as Jesmonite?

  Razzo is a non-toxic mineral casting compound similar to Jesmonite, but with several advantages. Razzo is easier to measure, easier to mix, has a longer working time, and is more readily available than Jesmonite. Razzo can also be demolded at any time after curing, unlike Jesmonite, which should be demolded after two hours and left to cure completely (outside of the mold).
• What can I make with TotalBoat Razzo?

  Coasters, tea light holders, napkin rings, jewelry, soap dishes, picture frames, dinner plate chargers, trivets, fireplace surrounds, ashtrays and more.
• How much mixed volume does Razzo yield?

  Razzo yields a mixed volume equal to the amount of Mineral Powder (Part B) used, by volume. For example, when measuring 1A:2B by volume, if you combine 2 oz. of Acrylic Liquid (Part A) and 4 oz. of Mineral Powder (Part B), the mixed volume will be 4 oz.
• How much Razzo do I need to fill my mold?

  Here's an easy way to estimate how much Razzo you need: Fill the mold with water, pour the water into a cup and measure the amount. Discard the water and dry the mold. Measure half that amount of Acrylic Liquid (Part A) and pour it into your mixing cup, then measure that original amount of Mineral Powder (Part B) by volume and pour it into the mixing cup and stir to mix thoroughly. For example, if you need 2 oz. of water to fill your mold, you would need (by volume) 1 oz. of Acrylic Liquid (Part A) and 2 oz. of Mineral Powder (Part B).
• What type of molds can I use with Razzo?

  Dried Razzo pieces are easier to demold (remove) from flexible silicone molds. You can also use molds made of GRP (glass-reinforced plastic), glass, wood, plaster, and metal.
• Do I need to use a mold release agent on my mold before filling it with Razzo?

  High-quality silicone molds do not need a release agent. However, you should use a mold release agent on other types of molds.
• Do I have to use the Razzo scoop to measure the liquid (part a) and powder (part b) components?

  No. You may use any clean plastic cup to measure the 1A:2B mix ratio by volume.
• How do I get rid of bubbles in my Razzo casting?

  Immediately after pouring, pinch the edges of the mold to release trapped air pockets. Use a toothpick to release air bubbles that are close to the surface. You can also tap the sides of your mold to release air bubbles, or lift the mold and drop it gently onto a flat surface.
• When can I remove my Razzo piece from the mold?

  Demold after at least one hour, when your piece is firm and cool to the touch. It may still feel a little moist, but that's not an issue. Set it aside and allow it to cure completely.
• How much Razzo Pigment Powder should I use?

  The maximum amount of Razzo Pigment Powders that can be added is 5-10%. Emerald Green is the most concentrated color and should be added slowly, while White, Black, Orange, and Yellow may require more powder to achieve the same concentration. The remaining Razzo Pigment colors are in the middle concentration range.
• Do I have to use Razzo Pigments to tint TotalBoat Razzo?

  Razzo Pigment Powders are formulated to work best with Razzo. However, if you want to try other brands and forms of Jesmonite pigments, we recommend you perform a small test first, before using them on your actual project. Do not use pigment dispersions, alcohol ink pigments, or mica powders to tint Razzo. Mica powder will make the mixed Razzo material too dry, and many pigments with fillers contain an elastomer that will not allow Razzo to be broken into chips.
• Does the amount of pigment added affect the cure time of Razzo?

  Yes. More pigment will extend the cure time.
• Is cured Razzo waterproof?

  No. Cured Razzo is porous and should not be exposed to water/moisture for extended periods.
• What can I use to seal Razzo?

  We currently recommend using TotalBoat Halcyon Satin Varnish to seal Razzo and make it waterproof for use in soap dishes and other items that will be exposed to water/moisture for prolonged periods.
• Is Razzo food safe, once cured?

  No, Razzo is not safe for food contact. It's ideal for use as a trivet or a dinner plate charger (the decorative liner that goes under the dinner plate), but don't use it as a cheese board or charcuterie board.
• What is the mix ratio by weight for Razzo?

  1A:2.2B (1 part Acrylic Liquid (Part A) to 2.2 parts Mineral Powder (Part B)).
• Can I cast Razzo with epoxy?

  Yes, but you must make the Razzo piece first, and allow it to cure completely before adding epoxy to the mold. Do not add epoxy first, then Razzo.
• Can I cut or drill Razzo, once it cures?

  Yes, you can drill it or cut it with a saw (e.g., table saw, router, band saw)