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Technical Tips

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Technical Support

Looking for a specific technical tip or just need general technical support?

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Email our technical team at: Technical@ransom-randolph.com.​

General
Tips General
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Binder Freeze Kit Instructions

Instructions for testing specific gravity using a binder freeze kit

Ceramic Shell
Tips CS
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Autoclaving

Recommended autoclave operating procedures to prevent or minimize shell cracking in your foundry

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Binder Remixing

Simple and inexpensive way to remix binder, prior to use, in a drum or IBC container

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Eradicate and Prevent Bacteria

How to test your slurry to eradicate bacteria growth and prevent the contamination from occurring

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FlashFire Dewax Method

General process recommendations to dewax and burnout the ceramic shell

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Flask Calibration and Use

Calibration and use of volumetric and pycnometer flasks, both commonly used to measure binder density

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Purified Water for Slurries

Ever since colloidal silica was first introduced to the precision investment casting industry, the importance of using purified water has been evident.

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SculptaCast™ Wax FAQs

Frequently asked questions and answers about SculptaCast waxes

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Shell Building

Technical tips for building a consistent shell in your foundry

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Shell Inclusions

Most common causes for shell inclusions

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Slurry Additives

Understand what slurry additives do, when to use them and how to use them properly

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Slurry Control

Control the slurry in your foundry by conducting regular testing to best understand the properties of your slurry

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Slurry pH

​Identify and correct specific sources of declining slurry pH and apply appropriate corrective actions

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Spalling of Primary Shell Coats

Most common causes and potential solutions for spalling of primary shell coats

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SuspendaSlurry® Materials FAQs

Frequently asked questions and answers about SuspendaSlurry materials

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Viscosity Control for Primary Slurries

Basic slurry control can be accomplished with viscosity and binder solids; determine what additions are required to bring a slurry back into a workable range

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Viscosity Cup Correlations

Equivalency charts for converting between different flow cups and endpoints

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Wax Pattern Defect Trouble Shooting

Potential causes and corrective actions for troubleshooting wax pattern related defects in your foundry

Tips Dental
Dental
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Dental Crown and Bridge Defect Analysis Guide

R&R recommends utilizing the following problems, causes and solutions to guide you through any difficulties you may encounter with dental crown and bridge (C&B) investments.

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Dental Investment Best Practices

A guide to best practices when using dental investments; including: Liquid Preparation/Dilution, Liquid/Powder Ratio, Working Time, Bench Setting, Grinding the Tops of the Ring, and Burnout.

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Dental Investment Cracking

Dental investment cracking is typically caused by liquid inside the invested ring evaporating too quickly. Build-up of these liquids, in the form of gasses, can remain in the oven and impede the evaporation process. To avoid this issue, R&R recommends implementing these two important steps.

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Dental Investment Defect Analysis Guide

R&R recommends utilizing the following problems, causes and solutions to guide you through any difficulties you may encounter with dental investments.

Tips Jewelry
Jewelry
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Jewelry Injection Wax Guidelines

To make the most of the inherent features and benefits in your jewelry injection wax, R&R recommends following these simple guidelines

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Cracking and Flashing in Jewelry Molds

Understanding the science behind jewelry investments and the process can help you to overcome these defects

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Jewelry Injection Wax Troubleshooting

Problems and remedies to guide you through any difficulties you may encounter with your jewelry injection waxes

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Potential Causes of Jewelry Casting Defects

Potential causes of common jewelry casting defects

Tips Equipment
Equipment
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Vulcan® Burnout Furnace Thermocouple Replacement

Refer to the following steps to replace the thermocouple your Vulcan burnout furnace.

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Vulcan® Burnout Furnace Power Cord Safety

When installing your Vulcan burnout furnace, it is important to know what kind of electrical you need to stay safe.

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Vulcan® Single-Stage Burnout Furnace Quick Guide

For Vulcan single-stage burnout furnaces, R&R recommends following steps 1-3 to program new values for each action.

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Vulcan® Three-Stage Burnout Furnace Quick Guide

For Vulcan three-stage burnout furnaces, R&R recommends following steps 1-3 to program new values for each action.

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Vulcan® Three-Stage Firmware Update

Refer to the following steps to update the firmware on your Vulcan three-stage burnout furnace.

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Neycraft™ Duplicating Unit Quick Guide

For Neycraft duplicating unit, R&R offers this quick guide, intended to be used a simple overview.

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