EASYCLEAR is a two-component condensation (tin) translucent silicone with Shore A20 hardness that cures at room temperature in 4-5 hours. Its translucent finish and simple mix ratio (100:5 by weight) make it a very practical option when you need to see the original through the mould, locate parting lines with precision, or work on special effects projects that require a soft, semi-transparent material.
Technical specifications
| Parameter |
Value |
| Silicone type |
Condensation (tin) |
| Colour |
Translucent |
| Shore Hardness |
A20 |
| Mix ratio (by weight) |
100A : 5B |
| Working time |
20 min |
| Cure time |
4-5 hours at room temperature |
| Mixed viscosity |
13,000 cps |
| Elongation at break |
400% |
| Tensile strength |
33 kgf/cm² |
What it's used for
Thanks to its translucency, EASYCLEAR is especially useful in situations where being able to see the original through the mould makes a real difference: locating the exact parting line, checking the centring of the piece, or simply working with greater confidence on complex-geometry parts. It is compatible with the most common casting materials in the workshop:
- Block moulds for parts with complex geometry or difficult demoulding
- Cut moulds where translucency allows you to locate the exact parting line before opening
- Plaster and gypsum castings
- Polyurethane, polyester and epoxy resin castings
- Fibreglass castings
- Moulds for wax and handmade soap
- Hyperrealism pieces and special effects (FX) requiring a soft, translucent material
How to use it
- Prepare the original and the mould box. Clean the original piece thoroughly and build the mould box to the appropriate size. Apply a release agent such as Ferosil V 32 if the original material could adhere to the silicone.
- Weigh the components. Mix 100 parts of base (component A) with 5 parts of catalyst (component B) by weight. A precision scale is essential to respect the ratio.
- Mix thoroughly. Stir slowly and evenly for 2-3 minutes, scraping the sides and bottom of the container carefully to avoid uncatalysed areas.
- Degas if you have a vacuum chamber. Applying vacuum for 1-2 minutes removes air bubbles and improves detail reproduction. If you don't have a vacuum chamber, pour in a thin stream from height to reduce air incorporation.
- Pour over the original. Do so slowly and continuously, starting from the lowest point of the mould box so that air is displaced upwards. If you need higher viscosity for vertical applications, add Thixo Additive before catalysing.
- Wait for full cure. Allow to cure for 4-5 hours at room temperature (minimum 20 °C) without moving the mould. At low temperatures the cure time increases; avoid working below 15 °C.
- Demould carefully. Remove the mould box and extract the silicone mould. Clean any release agent residue before the first casting.
Usage tips
Temperature and humidity: key factors in curing
Condensation silicones cure by reacting with ambient moisture. In very dry environments (relative humidity below 40%) the cure may slow down or remain incomplete in the inner areas of the mould. The ideal conditions are between 20 °C and 25 °C with a relative humidity of 50-60%. If the workshop is dry, slightly humidifying the environment speeds up the process.
How to make the most of translucency when marking the parting line
The great advantage of EASYCLEAR over opaque silicones is that you can mark the parting line from the outside of the cured mould, without having to open it blind. Once cured, place the mould over a light source and use a marker or needle to trace the cut path before inserting the scalpel. This reduces the risk of damaging the original piece or the mould cavity itself.
Accelerating cure with EasyCat 3520
If you need to reduce the working time or cure time, you can use the EasyCat 3520 Catalyst as an accelerator. Bear in mind that increasing the catalyst proportion above the recommended ratio can reduce the final mechanical properties of the mould: always adjust within the margins indicated by the manufacturer.
Frequently asked questions
How many copies can I get from a condensation silicone mould?
With a well-maintained condensation silicone mould you can obtain approximately 30-40 copies in good condition. EASYCLEAR, being Shore A20, is a soft material that facilitates demoulding of parts with undercuts, which helps preserve the mould over more cycles. Using a release agent with each casting extends the mould's service life.
Can I use this mould to cast epoxy resin?
Yes. EASYCLEAR is compatible with epoxy, polyurethane and polyester resins. Bear in mind that freshly mixed epoxy resin can inhibit platinum silicones, but does not affect condensation silicones like EASYCLEAR. Always apply a release agent before casting to facilitate demoulding and extend the mould's life.
Can I add pigment to this silicone?
Yes, you can pigment EASYCLEAR with silicone-compatible pigments. Bear in mind that adding pigment will reduce or eliminate the translucency, which is precisely the key feature of this product. If you need an opaque, coloured mould, consider other references in the catalogue. Do not exceed 3% pigment by weight relative to the total mix to avoid altering the mechanical properties or the cure.
Is it suitable for Food Safe moulds?
No. EASYCLEAR is a condensation (tin) silicone and does not have Food Safe certification. For moulds intended for food contact, it is essential to use a platinum silicone with Food Safe grade (FDA), such as Easyl 940-FDA, and carry out the recommended post-cure.
Can I use this silicone to make a prosthetic or body mould?
No. Condensation silicones are not suitable for skin contact, especially for full-body moulds or sensitive areas. For Life Casting or dermal prosthetic applications, platinum silicones specifically formulated for that purpose must be used.
Can the cure be accelerated by increasing the amount of catalyst?
In moderation, yes. Slightly increasing the catalyst proportion reduces the cure time, but excessive proportions can degrade the mechanical properties of the mould (lower strength, greater brittleness). A more controlled alternative is to use the EasyCat 3520 Catalyst following the manufacturer's instructions.
What is the difference between a tin silicone and a platinum silicone?
Tin (condensation) silicones like EASYCLEAR are more cost-effective and ideal for general-purpose moulds, with an approximate service life of 30-40 copies. Platinum (addition) silicones are more durable (60-80 copies or more), support Food Safe grade and are compatible with skin-contact applications. However, platinum silicones are sensitive to inhibition from contact with certain materials (sulphur, latex, fresh epoxy, etc.), something that does not affect tin silicones.
Can I make a cut mould with this silicone?
Yes, and it is precisely one of the most valued uses of EASYCLEAR. Its translucency allows you to see the original inside the cured silicone block and accurately mark the cut path before inserting the scalpel. This is especially useful for parts with complex geometry where a poorly placed cut could render the mould unusable.
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