Creating Armed Frames with Polytech Liquid Rubber: A Step-by-Step Guide

Updated at: 21/03/2025

Polytech Liquid Rubber offers a unique and versatile solution for creating durable, custom-shaped frames, particularly useful in applications where strength and weather resistance are crucial. Unlike traditional framing materials, Liquid Rubber allows for intricate designs and seamless integration with various surfaces, eliminating the sharp edges and potential weaknesses found in more rigid structures. This flexibility opens a world of possibilities for artists, craftspeople, and DIY enthusiasts alike, enabling the creation of everything from robust picture frames to protective casings for sensitive equipment.

Imagine building a strong, waterproof frame with almost any shape imaginable. This guide will walk you through the process of crafting armed frames using Polytech Liquid Rubber, providing a comprehensive, step-by-step approach to achieving professional-looking results. From material preparation to the final curing process, we’ll cover everything you need to know to successfully build your own custom armed frames.

Preparation and Safety Guidelines

Tools Needed
  • Polytech Poly 7420 liquid rubber
  • Poly 74 series liquid rubber (Part A & Part B)
  • Poly foam 5 rigid casting foam (Part A & Part B)
  • Two buckets
  • Clamping system (described in video)
  • Release agent (Poly's 2:30)
  • Cinder block
Safety Guidelines
  • Always work in a well-ventilated area. Polytech Liquid Rubber fumes can be harmful if inhaled.
  • Wear appropriate personal protective equipment (PPE), including gloves, eye protection, and a respirator, throughout the entire process.
  • Dispose of used materials and containers responsibly according to local regulations. Liquid rubber and its solvents can be hazardous to the environment.

Step-by-Step Instructions

  1. Prepare the Mold

    • Apply release agent (Poly's 2:30) to the mold.
    Apply release agent (Poly's 2:30) to the mold.
    Prepare the Mold

  2. Mix and Pour Rubber

    • Mix Polytech liquid rubber Part A and Part B according to measurements.
    • Pour the mixed rubber into the molds.
    Pour the mixed rubber into the molds.Pour the mixed rubber into the molds.
    Mix and Pour Rubber

  3. Assemble Clamping System

    • Position the top clamping piece onto the mold.
    • Place the larger clamping piece on top of the top clamping piece.
    • Position the cinder block on the edge of the clamping system.
    Position the cinder block on the edge of the clamping system.Position the cinder block on the edge of the clamping system.
    Assemble Clamping System

  4. Mix and Pour Expanding Foam

    • Mix and pour Poly foam 5 rigid casting foam Part A and Part B into the mold.
    Mix and pour Poly foam 5 rigid casting foam Part A and Part B into the mold.Mix and pour Poly foam 5 rigid casting foam Part A and Part B into the mold.
    Mix and Pour Expanding Foam

  5. Allow Foam to Expand

    • Allow the expanding foam to fill the mold.
    Allow the expanding foam to fill the mold.Allow the expanding foam to fill the mold.
    Allow Foam to Expand

Read more: Super Crown Cosplay Tutorial: Fabric Covering for a Professional Finish

Tips

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Common Mistakes to Avoid

1. Uneven Coating Thickness

Reason: Applying too much or too little liquid rubber in one go can lead to an uneven surface finish and weaken the frame's structural integrity.
Solution: Apply thin, even coats, allowing each layer to dry completely before applying the next.

2. Insufficient Drying Time

Reason: Rushing the drying process can result in a sticky, tacky finish and prevent the rubber from fully curing, making the frame weak and prone to damage.
Solution: Allow ample drying time between coats as specified by the manufacturer's instructions.

3. Poor Surface Preparation

Reason: Dust, dirt, grease, or other contaminants on the frame's surface can prevent the liquid rubber from adhering properly, leading to peeling or bubbling.
Solution: Thoroughly clean and degrease the surface of the frame before applying the liquid rubber.

FAQs

How long does it take for Polytech Liquid Rubber to fully cure?
Cure time depends on factors like thickness, temperature, and humidity. Check the product's specific instructions, but generally, expect a full cure within 24-72 hours. It's best to let it cure longer for maximum strength and durability.
Can I use any type of armature or support structure inside the Liquid Rubber frame?
While many materials work, consider using something that won't react with the rubber (like certain metals or plastics) and is sturdy enough to maintain the frame's shape during the curing process. Avoid materials that will absorb moisture which could affect the cure or weaken the frame over time.