Silicone to make molds

Different types of rubber for making a mold

Making a rubber mold


At V-Sure we have various types of silicone for making a mould.

Whether you are looking for a heat resistant mould to cast bronze in, a tear resistant mould to make replicas or spatterable skin friendly silicone to use directly on the face. At V-Sure you are guaranteed to find the right product for your application.

We have already summarised a few questions for you in the overview below.

How do I make a cast of a body or torso?

Alginate

With V-sure's materials, it is very easy to make a cast of a body.

Would you like to make an impression of your hand, face or torso? Or would you like to immortalise the feet of your child? With V-Sure's Alginate you can make a cast of the body quickly and safely. The alginate used in our products is completely safe to use and harmless. You can even use it to make impressions of a newborn baby's hand or foot.

Alginate is a powder that you need to process with plain water. This creates a quick-drying pouring or splashing mass that you can apply directly to the skin. Within a few minutes, the alginate will react and turn into a soft kind of rubber.

The mould you have made in this way can now be poured with a plaster-like resin such as Zellaan to make a detailed impression of the body part.


Step-by-step plan for making rubber moulds directly on the skin with Alginate

Alginate

Spatula

Gipsum plaster bands

Zellaan

Follow our 4 step plan for making rubber moulds directly on the skin, for example of a pregnant belly or face, with Alginate.

  • STEP 1:
    Make sure the model you wish to cast is lying or standing in the correct position. Protect the eyelashes, eyebrows, moustache, beard and other hair with a thin layer of vaseline. If you want to make an impression of a head or face, have the person put on a latex bathing cap and tuck all head hairs under it. Alginate is a natural product and is completely harmless to the skin. It does not shrink during the gelling process, but will do so later when it dries out. Inform the model that the total duration of this procedure will be at least 30 minutes.
  • STEP 2:
    Take 100 gr alginate powder and mix it with 200 (to 300 gr) water. Always mix the powder into the water, not the other way around! Stir vigorously with a kitchen whisk or mixer. Try to avoid air bubbles. Mix until no lumps are visible. Apply the mixture to the model within 10 minutes. If you have too little, you can always continue to create and work on the previous layer. However, this should always be done within 10 minutes.

  • STEP 3:
    Apply the mixture evenly in a minimum layer thickness of about 1 cm. Finish the whole surface in one go. Try to avoid air bubbles during application and use a spatula to smoothen the mass. Once the mixture has been sufficiently gelled, you can start applying the supporting template.
  • STEP 4:
    It is best to reinforce this with pre-treated plaster tape. Leave the alginate on the substrate the whole time and only remove it when the support mould has hardened in plaster.
  • STEP 5:
    After the mould and the supporting mould have been removed from the model, a first impression should be cast in a water-compatible material as soon as possible. Ordinary casting plaster or zellane are available here. Polyester, epoxy, etc. are not suitable as casting resin at this stage.

CAUTION! You can only cast a few times in the alginate mould. The mould will soon dry out and become brittle.


Liquid latex is mainly used to make simple and cheap rubber moulds. At V-sure we recommend the one-component liquid natural rubber Eco latex. This easy-to-process rubber mould gives an elastic rubber layer into which you can pour almost any product. If desired, you can thicken the liquid latex with a thickener to obtain the desired layer thickness even faster.

Applications of liquid latex

Liquid latex is mainly used in the artistic sector. Applications are endless and surpass all creativity. Think for example of making scary masks for Halloween, but also casting sculptures and making moulds are possible. Do not use liquid latex if you:

  • Are allergic to ammonia, sulphur and/or latex.
  • Have hypersensitive or damaged skin.


How can you thicken the ECO LATEX to make it thicker (thixotrope) and spatterable?

Eco latex thickener

Here we recommend the Latex thickener. After adding this thickener, the Latex moulding rubber becomes thicker (thixotroper) and can be spread or brushed to achieve the desired layer thickness more quickly.

How do I store latex rubber moulds?

Eco latex moulding rubber

It is best to keep your mould in a dark place and certainly not in direct sunlight. This will cause the latex rubber to become brittle and discoloured.

How do I quickly make tear-resistant elastic rubber moulds for 3D replicas and art objects?

Silicone Fast Blue

With a fast-drying, thinly liquid, 2-component casting rubber for the manufacture of highly elastic rubber moulds which must be styrene-resistant for a hobbyist. We recommend Silicone Blue Fast here.

How do you make temperature-resistant elastic rubber moulds for 3D replicas and art objects?

Silicone High Temp Blue

With a liquid, tough elastic casting rubber for casting lead and tin that is temperature resistant up to 250°C. Here we recommend Hightemp Silicone.

How can you colour silicone rubber?

Silicone dye

We recommend that you use the silicone pigments. These are special colouring agents for colouring silicone rubbers.

How do I make moulds of 3D replicas and works of art with transparent rubber?

Silicone transparent

Silicone dye

Here we recommend the extremely flexible and tear-resistant moulding rubber type silicone transparent. Thanks to its transparency, this silicone rubber can be cut where you wish to obtain a partial seam after casting a block mould. Furthermore, this colourless silicone can also be coloured using silicone colour pigments to make elastic moulds.

How do I apply elastic rubber moulds to the skin?

Alginate

Zellaan

Here we recommend using Alginate, a natural elastic rubber for the manufacture of one-off moulds. This allows you to make moulds quickly and directly on the skin. And then pour in plaster or Zellaan to make the mould.

What are the different types of silicone rubbers from V-Sure?

Silicone rubber

Silicone NL thickener

The two-component silicone rubbers come in different versions. V-Sure's range includes various polycondensation-curing cast rubbers. The Standard NL silicone rubber is suitable for applications such as moulding chocolate.

For casting low-melting metals, such as tin or lead, we recommend silicone rubbers that are briefly resistant to high temperatures, even up to 250°C. Hightemp silicone is a good example of this.

In order to turn your cast rubber into a spatterable mass, you need the silicone thickener. With this you make your silicone so thixotropic that you can even apply it to the ceiling. This is done, for example, to finish a rosacea.

Within the Polyaddition silicone rubbers we have quick-drying moulding rubbers with a Shore of 22, which can be deformed after just one hour. In addition, you can also find pink spatterable silicone, which can be applied directly to the skin thanks to its very rapid curing. We also offer transparent silicone rubbers, which you can colour yourself with the silicone dye. In this way you can make a silicone rubber mould from a 3D printed object and then pour another silicone into it after applying a release agent. In this way you can produce objects that remain elastic and can be coloured as desired. The polyaddition silicone is shrink-proof and consequently reproduces every detail with razor-sharp precision.


I am looking for a quick-drying and spatterable elastic rubber that I can apply to the skin to make 3D replica body prints

Silicone kneadable

Here we recommend the Silicone malleable.

With the handy 1:1 ratio, you can knead the malleable silicone rubber between your fingers and copy objects with it. Thanks to the superfast curing, you can obtain a mould within 10 minutes. Our range is further completed with extra soft moulding rubbers, even one with a Shore 0. This one has a skin-like structure. Ideal for theatre pieces or Halloween.


What are the advantages of silicone rubber from V-sure?

Silicone rubber

The advantages of silicone rubber are that it is self-dissolving on virtually any surface. You therefore do not need to use a release agent. Only in the event that you wish to have silicone loosened from each other. Our silicone is used to manufacture elastic block moulds consisting of several parts. Jewellery designers, artists and product designers also like to use these UV resistant, colourfast and permanently elastic polymers.

How can I make elastic and tear-resistant moulds fast with spatterable rubber?

Silicone Body Pink

Silicone dye

Here we recommend the quick-drying and spatterable silicone rubber type Body Pink. This handy silicone rubber can be applied directly to the skin or, for example, to make moulds on a ceiling. The silicone does not drip.

How to cast tear-proof and extremely flexible colourless silicone molds?

Silicone Soft Transparent

Here we recommend the extremely flexible and colourless moulding rubber type Silicone Soft, this is a colourless silicone moulding rubber which can be coloured with a silicone pigment if required.

How do you cast concrete in elastic rubber moulds?

Silicone NL

With a silicone rubber cast you can quickly and easily make elastic moulds in which you can cast concrete several times. In some cases it is better to use polyurethane rubber because of its better alkali resistance and higher solidity.

For larger pieces Sicovoss NL with the thickener. For medium sized pieces the Body pink and for very small pieces the knead silicone.

How do I mould a prototype? And which plasticine can I use for casting elastic block moulds with a poly additive silicone?

Plasticine

With the V-Sure Placticine kneading compound. This is a modelling and moulding paste based on natural beeswax.

How do you make a mould for casting paraffin and making a candle?

Eco latex moulding rubber

Eco latex thickener

Here we recommend using the Eco Latex moulding rubber, a handy 1-component natural rubber. Thanks to its high elasticity, you obtain a super-stretchable mould that is suitable for casting paraffin or wax. To obtain the wall thickness of the rubber more quickly, you can use the Latex thickener.

How do you reinforce a rubber mould with a strong yet extremely light construction?

Silicone rubber

Epoxy Modeling paste

STEP 1: Preparation of a rubber mould (this can be silicone or Latex rubber)

STEP 2: Reinforcing with kneadable epoxy.
 
Ductile Epoxy is a 2-component lightweight paste based on epoxy. For building up models or as a support mould for moulded rubber and for repairing existing models in a maximum layer thickness of 40 mm. Has excellent adhesion to various surfaces such as GRP, wood and metal.

Mix both components in the correct weight ratio of 100/100 until you obtain a homogeneous brown colour. Pot life: 30-40 min. at 23°C. Dry after 24 hours and fully cured after 7 days.


What are the different types of release agents?

Release agents

A release agent is usually a liquid material with which you can easily achieve a release between your mould and your cast. There are various types of release agents that are suitable for processing with cold-curing plastics. There are also various systems available that you can apply with a brush or with a spray can.

In V-sure's webshop you can find different types of release agents. Most of them are only suitable for processing polyester or epoxy. But there are also special release agents that can be used for polyurethane and silicone rubbers. The latter are universal release agents, free of oil or silicone. Most release agents are based on natural waxes. This is often combined with a solvent. Once the solvent has evaporated, only the wax layer remains. Because of this, you can easily apply the release agent to almost any surface.


What are the advantages of a universal release agent?

Trennspray

The great advantage of the universal release agent TRENNSPRAY, is that it can be used on almost any surface. Plus it is suitable for every type of cold-curing plastic, such as polyester, epoxy, polyurethane, silicone and even adhesives based on acrylics. Simply spray a few coats in succession over the surface to be treated and polish briefly with a polishing cloth. This will create a gloss and give you a perfect release.

How can you glue a cracked silicone mould?

Universal Hybrid Transparant

To glue or adhere two pieces of silicone rubber together, we recommend using the 1-component silicone sealant Universal Hybrid transparent.

Can I use casting silicone to pour chocolate into?

Silicone NL

In this case, use the silicone moulding rubber Silicone NL. This is food grade and makes super fine prints possible on almost any surface.

How can you make a mould for casting liquid glass up to 800°C?

Zellaan

Here we recommend using Zellaan, a water-based acrylic powder, which hardens into a porcelain-like substance and can withstand such higher temperatures.

How to make soap molds?

Silicone NL

Silicone NL thickener

Here we recommend silicone NL A+B. If necessary, this can be thickened with the thickener for splashing.

How can you colour silicone cast rubber?

Silicone dye

Here we recommend working with the special silicone pigments. These are ideal for adding to all types of silicone rubber. Silicone rubber cannot be painted over and no other pigments can be added.

How to make moulds for miniatures?

Silicone Fast Blue

PUR MC6

Here we recommend using the quick-drying 2-component casting rubber type Blue Fast. This elastic, permanent silicone rubber takes over all the details of the miniature. For casting the mould pieces, it is best to use PUR MC6.

How do I make moulds for decorative stones or jewellery?

Silicone Fast Blue

Here, we recommend using the fast-drying casting rubber type Blue Fast. This 2-component silicone rubber perfectly reproduces all the details of the prototype. This mould is suitable for subsequent casting with wax.

How to make a copy of an existing sculpture or ornament?

Silicone NL

Silicone NL thickener

We recommend using a 2-component silicone rubber here. The standard cast rubber type silicone NL gives an extremely tear-resistant elastic rubber which can be poured directly over the original. If required, this silicone can be made thixotropic with the Silicone thickener. This makes the silicone brushable or spatterable.

How do I make a mould of a wooden frame or make a reproduction of a design?

Silicone Body Pink

For this we recommend using the quick-drying spatterable silicone rubber type Body Pink. A 2-component rubber for quickly making moulds.

How can I cast bronze, lead, tin or zamac in a rubber mould?

Silicone High Temp Blue

Here we recommend the thin liquid casting rubber type High Temp Blue. This is a temperature-resistant silicone rubber with a Shore of 50 in a convenient 1:1 mixing ratio, which cures quickly. This mould can be moulded and cast repeatedly with lead or tin. Bronze cannot be cast in these materials as the maximum temperature resistance of silicone rubber is 250°C.

How can elastic rubber be used to make a mould for baking culinary decorations and cakes?

Silicone NL

Use silicone Sicovoss NL. This is a soft rubber for extremely detailed pouring of sugar or chocolate.

How do you quickly make elastic moulds for decorations?

Silicone Body Pink

Zellaan

PU foam

Here we recommend the spatterable Body Pink silicone. You can apply this in one or more layers in the desired thickness. even overhead, such as on a ceiling. Thanks to the fast drying (<30 minutes), you can immediately use it to cast the parts in Zellane or PU foam.

How to cast erotic moulds or dildos in silicone?

Transparent liquid silicone

Silicone Transparent HT 33

Various silicone rubber is available here in a transparent version which you can colour with the silicone pigments.

How do you quickly make a mask in a silicone mould?

PU inmould coating

PU foam

STEP 1: Applying in-mould coating in the mould

STEP 2: Casting in PU-based elastic foam


How can I cast lures or fish baits myself?

Silicone NL

Trennspray

Silicone dye

You can make a mould with the casting silicone NL. Then inject a release agent type Trennspay into it and subsequently cast the lures in a transparent casting silicone which you can colour yourself with silicone pigment.

Here we suggest using the quick-drying casting rubber type Silicone Fast Blue. Once the mould is ready, you can then use the PUR casting resin MC 5 and colour pigments to quickly make a cast. If you wish to have a more rubbery elastic casting compound, then you should use PUR PF150-15 with the harder PUR PF B KOMP. PTG1. Colour pigment can also be added here.