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Beton Formen

long lasting rubbers for concrete casting and stamping.

  • PU Rubber
  • Silicone
  • Release Agents
  • Sealers

Products to cast concrete

  • PMC-121 Serie

    PMC-121-Serie Polyurethankautschuken habben praktisch keine Schrumpfung und sind extrem robust u...

  • PMC-744

    PMC-744

  • PMC 746

    PMC-746

  • VytaFlex Serie

    Die VytaFlex Serien ist die neueste Entwicklung in den Smooth-On PU-Kautschuken. Mit dem 1A: 1B M...

silicone concrete molds

  • MoldStar Serie

    Mold-Star Kautschuk ist einfach 1A : 1B nach Volumen zu mischen (keine Waage nötig) und verfügt über eine relativ niedrige Viskosität

  • Rebound Serie

    Rebound sind Platin-Cure-Silikonkautschuke, die sich selbst verdicken und leicht auf Modelle zu pinseln sind für Formen von fast jedes Modell. 1A: 1B mischverhältnis nach Volumen (kein Maßstab erf...

Release Agents for Concrete

  • U-10 Soap Solution

    Abwaschbarer Versiegeler, ideal zum Versiegeln aller Arten von porösen Oberflächen wie Gips, Zement, Stein und Modelliermasse.

  • In & Out® II

    IN & OUT® II water soluble release agent will aid in releasing concrete or gypsum plaster castings from Smooth-On rubber molds. IN & OUT® II provides a clean, positive release and does not interfere w ...

  • One Step™

    One Step™ is a convenient, economical liquid sealing agent and release agent in one. This low odor, low viscosity formula is offered as a “one step” alternative to using a sealing agent followed by a ...

What is the best release agent for releasing concrete from a rubber mold?

A: It depends on 1) the type of mold rubber you are using as your mold material and 2) the make up of your concrete ad mixture.

1. What mold rubber are you using?

Silicone rubber has the best release properties, but will succumb to the abrasive effects of the high-aggregate content of the concrete and lose detail over time. It’s best to use a release agent like Smooth-On’s AquaCon® water-based concrete release agent to protect the mold.

Urethane rubber does not have great release properties to begin with, so a release agent is recommended from the start. Note; Our customers find that, even without a release agent, high aggregate castings will release from VytaFlex molds after the mold is "seasoned" - used to cast concrete 10 - 12 times with AquaCon® Release Agent.

2. Ad mixtures:

High sand content ad mixtures generally release easily and do not require mold release from either silicone or urethane molds.

High aggregate ad mixtures will not release easily and will even bond to a urethane mold.

AquaCon® Concrete Mold release offers the following advantages; a) it will release concrete castings from the mold, b) it will not harm the mold, c) it will not stain your concrete castings and d) will not interfere with concrete pigment.

Do Not Use: Concrete casters try different release concoctions such as vegetable oil or petroleum jelly, but these materials will destroy the rubber mold over time and may stain your concrete.

What If I Don’t Have AquaCon® Concrete Release Agent? Until you can get some AquaCon®, you can try dishwashing soap and water mixed at 10 parts water to 1 part soap. Rinse the mold with soap solution and immediately cast your concrete.

Sealers for Concrete

  • Sonite® Wax

    Sonite® Wax is a soft paste wax suitable for sealing porous surfaces prior to applying Smooth-On mold rubber. Sonite® Wax will aid in releasing mold rubber from a variety of model surfaces and can be ...

  • One Step™

    One Step ™ ist ein praktisches, wirtschaftliches flüssiges Versiegelungs- und Trennmittel in einem. Die geruchsarme, niedrigviskose Formel wird als "One-Step" -Alternative zur Verwendung eines Dichtungsmittels gefolgt von einer ...

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