Urethane Resin Casting for Awesome Molds

Use either ComposiMold or ImPressive Putty for Urethane castings.

Many people use urethane resins because of their versatility and relatively simple use. Most urethane casting materials are 1:1 mixes with short casting times ranging from 1 to 30 minutes. Urethane plastics are used for making models, prototypes, crafts, and art pieces. 

Polyurethane resin casting in ComposiMold

Urethane resin in ImPRESSive Putty

Quick tip for success with urethane casting resins and ComposiMold:

With ImPRESSive Putty, faster cure urethane casting resins work really well. The mold making putty can handle the higher temperatures of the fast cure urethanes. 

For ComposiMold, choose a urethane with a longer cure time. These create less heat as they cure. You can also experiment with freezing the mold prior to pouring higher temperature urethane resins. Be sure to use talc powder/baby powder as your mold release before each casting made.

ComposiMold works very well with many urethane resins. However, there are two potential issues with some urethanes:

• Some fast cure urethanes create a lot of heat when they cure, which can melt the ComposiMold. You can work around this by chilling your mold first, adding fillers into the urethane before casting, or pouring the resin in intervals.
• Some urethanes are very sensitive to moisture. Use talcum powder as a mold release to reduce any moisture from the mold from reacting with the urethane.
• Use a mold release that is designed for polyurethane casting.

ComposiMold has two urethane resins available that we believe work very well with ComposiMold:

• Protocast Urethane Casting Resin: off white, easy mix, easy pouring, rigid urethane,
• Purecast Urethane Casting Resin: 100: A to 13: B Color Semi-transparent, Reddish/Brown Shore Hardness –50D-60D Gel Time about 10 minutes

Urethane resins require dry fillers. Any water will create bubbles and heat. If you using powdered fillers in the polyurethane, dry the material in the oven at low temperatures for 15 to 30 minutes prior to mixing. 

Pouring ComposiMold mold for resin casting

Making wheels from Urethane resin in ComposiMold mold

Visit Polyurethane Casting with ComposiMold for videos.

Please share this video and tell everyone you know about ComposiMold! Plus subscribe to see the next amazing blog post from ComposiMold!

For More Information Visit: 

www.ComposiMold.com

www.Facebook.com/ComposiMold

www.YouTube.com/ComposiMold 

The Science of Mold Making: What Makes ComposiMold Different

Mold making is the process used to duplicate three dimensional models. Through the use of a mold making material a negative of a model part is made. That negative can be used to cast a second part that is the exact same as the original part in size and shape. The same mold can be used to make many duplicates of the original model parts.

The term reusable mold is used as a way to describe the ability to remelt and reuse the same mold making material for many different and unique molds.

 Typical mold making materials such as latex, silicone, and polyurethane have several drawbacks for certain applications:

• Current mold making materials can only make one mold. That mold can be used many times, but when you are finished making duplicates of your sculpture or artwork, the mold is no longer useful.
• These one-use molds are difficult to fix if you make mistakes because the material does not stick to itself or leaves markings where the patching has occurred.
• Current mold making materials are also expensive and priced out of reach for most potential mold makers, especially beginner mold makers.

ComposiMold works by melting the material to form a hot liquid. This liquid is used to make moulds for casting duplicate parts of an original component. When melted, this low viscosity polymeric material pours over, brushes on, pours in, or covers an original component. The mold making material cools as the heat leaves the material into the surrounding environment. Once the model part is removed, this flexible mold material is used to make duplicates of the original part. ComposiMold is compatible with: plasters, waxes, soaps, concrete, plastics, edible materials and many more. The number of castings you can create in each mold varies based on type of casting material and how complicated your mold is. Then...simply remelt the mold making material to reuse it for over 35 different model parts.

Please subscribe to see the next amazing blog post from ComposiMold!

For More Information Visit: 

www.ComposiMold.com

www.Facebook.com/ComposiMold

www.YouTube.com/ComposiMold