Welcome to Gemini Group’s Resource Library!

We’re glad to share what we’ve learned over the past 50+ years. In fact, we encourage you to ask questions – we’re here to help you succeed! That’s why we’ve created the following resources.

If you have any questions or need more information about a particular process, our technical sales specialists are standing by to help! Give us a call at 248-435-7271 or shoot us an email at plasticsales@geminigroup.net.

Two-Shot Injection Molding

Two-Shot Injection Molding Design Guide

Two-shot injection molding delivers a high level of accuracy and repeatability and reduces production steps, cycle times, and overall costs compared to traditional molding methods. Learn how to optimize your design for this process with our new design guide. Download your copy today!

Technical Blow Molding

Blow Molding Design Guideline

This guide contains information and diagrams specific to the Blow Molding process that will help you develop a solid understanding of several important design and material property factors to consider when developing a blow molded part. Click the button below to get started. We would also be happy to discuss any comments or questions you have pertaining to the information it contains.

Technical Blow Molding Look Book

Blow molding produces hollow plastic parts with speed and repeatability. It’s best for difficult dimensions and high volumes. See what can be accomplished with technical blow molding in our new look book of blow molded parts. Download your copy today!

Profile Extrusion

Plastic Extrusion Design Guide

This guide covers general information related to the plastic extrusion process and introduces some important design, material, and cost considerations. In addition, this guide also contains information and diagrams specific to the thermoplastic extrusion process that will help you develop a solid understanding of several important design and material property factors to consider when developing an extruded part. Click the button below to get started. We would also be happy to discuss any comments or questions you have pertaining to the information it contains.

Extruded Seal Design Guide

You want to design your seal right the first time. Minimal changes, minimal headache. We’re right there with you. This guide provides the basic guidelines for designing extruded seals and weather stripping – from the perspective of an experienced extruder. Get your copy and dive into the extrusion design process today!

Selecting an Extruded Seal Material

Selecting the right material for your extruded or co‐extruded plastic seal applications can be a daunting task. You need confidence that you’re choosing the right material for the job. This resource will guide you through the most critical considerations so you can make the best choice possible.

Converting Rubber Seals to TPE

If your still thinking rubber when it comes to seals, now’s the time to re-consider and we are here to help. This guide provides the basic guidelines for converting rubber seals and weather stripping to TPE – all from the perspective of an experienced seal engineer. Get started today!

Forge Tooling

Reducing the Cost of Your Forging Process

This e-book was developed to spur conversations around tool and die design and how choices of material, setup, heat treatment, coatings, tolerances, and many other factors will alter the overall cost and efficiency of your operation. Use this book to help your company eliminate wasted time, money, and other precious resources. Download your copy today!

Tooling Selection For Forging Hammers

This whitepaper takes the guesswork out of forging hammer die design and refurbishment choices. We’ve included a flowchart which leads you to the design that offers the longest die life while lending itself to the most cost-effective refurbishment option, based on the requirements of your impression. Download your copy today!

Material Selection

Avoiding the Undisclosed Pitfalls of Plastic Process & Material Selection

This report contains important questions and detailed information to carefully consider in order to select the ideal manufacturing process for your custom engineered plastic components. Click the button below to get started. We would also be happy to discuss any comments or questions you have pertaining to the information it contains.

Plastic Material Selection Questionnaire

Regardless of the manufacturing process, there are dozens of factors to consider when selecting the material for your engineered plastic part. This questionnaire contains several questions you need to answer in order to identify the best resin for your application – and we are always here to help you with any additional questions you may have.