Mold Making Material Comparisons

 

ComposiMold and PowerMold are excellent tools for you for mold-making and castings.  It works well on its own as a reusable mold making material to allow you to make a wide range of molds without purchasing more mold-making material. It also works in combination with other mold-making materials such as urethane rubber, latex, and silicone to reduce the cost.  Below is a description of the major mold-making materials being used today in comparison to ComposiMold and ComposiMold-Firm



 

ComposiMold

ComposiMold-Firm

Silicone mold making material

Urethane Rubber

Latex

General description

Excellent for multiple molds, simple and easy tool for developing mold making process and great on the budget, Good tool for any mold makers tool-kit

Excellent for multiple molds, simple and easy tool for developing mold making process and great on the budget, Good tool for any mold makers tool-kit. Firmer than ComposiMold for two part molds or polymer clay push molds.

Great for large casting runs after you know what and how you are going to make your molds

Good for large casting runs after you know what and how you are going to make your molds

Good, low cost brush-on system used in conjunction with a backing material

Hardness

6-12 Shore A hardness (temperature dependent)

20-25 Shore A hardness (temperature dependent)

Various version ranging from 5 to 100 Shore A hardness

Various version ranging from 5 to 100 Shore A hardness

Various versions from 10-80 Shore A hardness

Elasticity

150% Elongation

150% Elongation

Elongation ranges from 50-1000% depending on type

Elongation ranges from 100-1000% depending on type

Elongation ranges from 150-500%

# Castings per mold

3 to 15 castings per mold

3 to 15 castings per mold

20-100 Castings per Mold

20-100 Castings per Mold

20-40 Castings per Mold

# Molds that can be made with same mold making material

Thermoplastic material can be continuously remelted. Certified up to 35 times

Thermoplastic material can be continuously remelted. Certified up to 35 times

1x use, Thermoset-cannot remake the mold

1x use, Thermoset-cannot remake the mold

1x use,-cannot remake the mold

Eco-friendliness

Biodegradable, non-toxic ingredients (food safe ingredients)

Biodegradable, non-toxic ingredients (food safe ingredients)

Non-biodegradable, toxic components until mixed and cured

Non-biodegradable, toxic components until mixed and cured

Non-biodegradable

Method to make molds

1 part mold making-melt in the microwave and pour

1 part mold making-melt in the microwave and pour

2 part system, measure or weigh each part to combine into a rubber

2 part system, measure or weigh each part to combine into a rubber

Dries over time, put down in layers, each layer dries before putting on next layer

Cost

Cost remains the same no matter how many different molds you make: Cost per mold goes down the more you use it.

Cost remains the same no matter how many different molds you make: Cost per mold goes down the more you use it.

Cost typically high-each mold cost the same.

Cost typically high, but lower than silicone, each mold cost the same

Cost typically lower than silicone-each mold cost the same

Backing Material

Works well as backing material

Works well as backing material

Can reduce cost by using it as a brush-on material with a backing material

Can reduce cost by using it as a brush-on material with a backing material

Works as brush-on material. Typically need backing material for stable molds

Time needed to make molds

Meltin occurs in a few minutes using a microwave or double boiler. Molds are ready when cooled. Place in freezer to speed up cooling. Smaller Molds can be completed in 1/2 hour

Meltin occurs in a few minutes using a microwave or double boiler. Molds are ready when cooled. Place in freezer to speed up cooling. Smaller Molds can be completed in 1/2 hour

4-24 hours depending on type of silicone.

4-24 hours depending on type of urethane.

1-2 hours per layer if dried with hair dryer or overnight for each layer.

Limitations

Melting point of 130 F. *

Melting point of 130 F. *

Can only make one mold

Can only make one mold

Can only make one mold

 

*It is possible to use higher temperature casting material by freezing the molds prior to pouring in hot casting material such as wax or soap.

^ComposiMold is also available in a food contact version for chocolate and fondant casting.

 

 

ComposiMold

ComposiMold-Firm

Plaster Molds

Alginate

General description

Excellent for multiple molds, simple and easy tool for developing mold making process and great on the budget, Good tool for any mold makers tool-kit

Excellent for multiple molds, simple and easy tool for developing mold making process and great on the budget, Good tool for any mold makers tool-kit. Firmer than ComposiMold for two part molds or polymer clay push molds.

Low cost, takes patients and skill to master

Good body molding material for one or two time use, if used quickly

Hardness

6-12 Shore A hardness (temperature dependent)

20-25 Shore A hardness (temperature dependent)

Hard

5-15 Shore A hardness

Elasticity

150% Elongation

150% Elongation

No elongation

20-50%

# Castings per mold

3 to 15 castings per mold

3 to 15 castings per mold

1, typically need to break mold to remove casting

1 to 3 casts, if mold does not dry out

# Molds that can be made with same mold making material

Thermoplastic material can be continuously remelted. Certified up to 35 times

Thermoplastic material can be continuously remelted. Certified up to 35 times

1

1

Eco-friendliness

Biodegradable, non-toxic ingredients (food safe ingredients)

Biodegradable, non-toxic ingredients (food safe ingredients)

Can be reground to use as filler

Biodegradable

Method to make molds

1 part mold making-melt in the microwave and pour

1 part mold making-melt in the microwave and pour

2 part system, measure or weigh each part to combine into a plaster

Mix with water

Cost

Cost remains the same no matter how many different molds you make: Cost per mold goes down the more you use it.

Cost remains the same no matter how many different molds you make: Cost per mold goes down the more you use it.

Low cost

Cost is somewhat high

Backing Material

Works well as backing material

Works well as backing material

Works well as backing material for one time use

Works well with body casting

Time needed to make molds

Meltin occurs in a few minutes using a microwave or double boiler. Molds are ready when cooled. Place in freezer to speed up cooling. Smaller Molds can be completed in 1/2 hour

Meltin occurs in a few minutes using a microwave or double boiler. Molds are ready when cooled. Place in freezer to speed up cooling. Smaller Molds can be completed in 1/2 hour

10-24 hours for mold to cure

10-20 minutes

Limitations

Melting point of 130 F. *

Melting point of 130 F. *

Can only make one mold and one casting. Not flexible

Can only make one mold. Dries out quickly

 

*It is possible to use higher temperature casting material by freezing the molds prior to pouring in hot casting material such as wax or soap.

^ComposiMold is also available in a food contact version for chocolate and fondant casting.