New Lifecasting Video: PlatSil® Gel-25 Face Cast

April 14th, 2015

Our latest video features the making of a PlatSil® Gel-25 face cast. PlatSil® Gel-25 is a skin-safe, platinum-cured silicone that is most often used for lifecasting and for making prosthetic appliances.   Steps in the lifecasting process: Step 1: Prepare Model Step 2: Measure & Mix PlatSil Gel-25 Step 3: Apply PlatSil Gel-25 to Model […]

Mold Making Tutorial: Silicone Mold of Clay Sculpture

April 2nd, 2015

John Cannon of The Whimsical Gardens brought his clay sculpture to our facility to make a mold of the figure and then reproduce it in plastic on a rotational casting machine. The detailed sculpture is pictured below from different angles. This blog details the steps that we took throughout the mold making and casting process: Step 1: […]

Tek-Tip: Tools & Techniques for Cutting Rubber Molds

March 19th, 2015

Some rubber molds require one or multiple cuts in order to remove the original model and subsequent castings.     Here are some tips regarding the tools and cutting techniques that we use here at Polytek:     Tools that we use:  A tool like your kitchen paring knife will not work well for cutting rubber molds. At […]

New Product Announcement: FormRub Series Liquid Rubbers

March 3rd, 2015

FormRub Series Liquid Rubbers Use FormRub Series liquid polyurethane rubbers to make high-performance molds that stand up to the rigors of high-production casting and forming of concrete. The product options within this series offer simple, 1A:1B mix ratios (measured by weight or volume) and low-viscosity mixes that flow easily across original models. Popular uses include molds […]

Tek-Tip: Painting with PlatSil® Gel-10 & Silicone Pigments

February 26th, 2015

Painting directly onto silicone can be challenging as there are not many paint materials that adhere well to silicone or stay in place when it stretches. In this tutorial, we show you a painting technique that BITY Mold of Supply of Richardson, TX demonstrated when visiting our headquarters recently.     Supplies for Project PlatSil® Gel-10 Naphtha Silicone […]

New Concrete Catalog: Liquid Mold Rubbers for Concrete Casting, Texturing & Stamping

February 11th, 2015

Our newest “mini-catalog” features product recommendations for applications involving concrete casting, texturing and stamping:   Cast Stone Veneer Form Liners Decorative Surfaces & Decor Hardscape Architectural Casting Plastics & Hardcoats Accessories   View the catalog here.    Do you need assistance in selecting an appropriate mold material for your next concrete casting project? Ask our technical […]

Mold Making Tutorial: Old-Growth Cypress Concrete TableTop

January 29th, 2015

We recently visited SureCrete Design Products, a decorative and specialty concrete manufacturer, at their headquarters in Dade City, FL. While there, we did some rubber mold making demos to showcase how flexible molds can be used to create a variety of unique, decorative concrete products. Typical applications include, but are not limited to: full countertops & […]

Mold Making: Poured Blanket Mold vs. Poured Block Mold

January 19th, 2015

In this blog entry, we will demonstrate two different mold making methods using the same plastic lion head model [pictured below] and the same silicone mold rubber. The methods are the poured blanket mold technique and the poured block mold technique.   Based on the size and shape of this particular model, either mold making method could be used with success. […]

A Year in Review: 2014 Mold Making & Casting Projects & Events

December 31st, 2014

As 2014 comes to a close, we would like to share some events, customer projects and new product announcements from the past year:   – World of Concrete 2014 – We had a great time meeting attendees and fellow exhibitors at the World of Concrete in Las Vegas. Click here to see how we the […]

Creating Permanent Masters for Mold Making

December 18th, 2014

This blog entry focuses on how to make hard rubber or plastic copies of original masters. There are a number of good reasons to create “permanent masters” of originals: Some original masters (e.g., stone) can easily break or crumble. Using original masters multiple times requires re-application of sealing agents, release agents and caulking. If you produce molds in […]