Plastic Machining:Design Considerations For Plastic Prototypes

What design considerations are necessary when purchasing plastic prototypes with full function?

In order to get to market fast, plastic prototypes should be fully functional. Plastic prototypes with full function of course offer the same tight tolerances and high precision as do plastic machined components, as they are one in the same. Simply fast, fully functional plastic prototypes are made in order to meet stricter deadlines, and are often ordered in smaller quantities. When ordering plastic machined prototypes, the considerations are the same as when ordering production plastic machined parts. The design specifications for production plastic machining and fast plastic prototypes are as follows:

Design Considerations For Plastic Prototypes and Plastic Machining

-Thermosensitivity – tolerance can change in different temperature conditions
-Sensitivity to humidity and hygroscopic absorption affects tolerance
-Sensitivity to chemicals and oils
-Notch sensitive corners and square ID’s
-Tolerances
-High loads
-High impact
-Fatigue loading or cycle loading requires consideration of flexing, deflecting, and compression
-Temperature – max/min extent of time
-Electrical considerations such as insulating properties
-Wear resistance or abrasion resistance
-Dimensional shape retention (load, cold flow, temperature)
-Regulatory requirements (FDA, UL, etc.)
-Appearance (color, texture)
-Optical requirements
-Outdoor use

Now that you’ve identified the important factors in your application, evaluate material specs in the Free Plastic Properties Handbook and select your material!

Plastic Machining and Plastic Prototypes With Engineering Assistance From Experts-The Solution

Machining Plastic is the perfect solution for many varied component needs in numerous critical industries however, most engineers may not have the necessary knowledge.

Many of the brightest, most talented engineers do not have the knowledge required in order to know what material is best for a component or plastic prototype need. Simply the reason being that until recently, plastic machining was not taught in engineering schools. Currently the presence of plastic machining courses is limited to only a small number of schools. In order to select the proper material, contact a plastic machining expert for design application assistance.

Design considerations when machining plastic are unique to plastic.  One with experience machining metal for example, would not be aware of these specifications.  When ordering plastic machined components or plastic prototypes, the following considerations are evaluated:

  • Thermosensitivity
  • Sensitivity to humidity and hygroscopic absorption
  • Sensitivity to chemicals and oils
  • Notch sensitive corners and square ID’s
  • Tolerances
  • High loads
  • High impact
  • Fatigue loading or cycle loading
  • Temperature
  • Electrical considerations
  • Wear resistance or abrasion resistance
  • Dimensional shape retention
  • Regulatory requirements (such as FDA or UL)
  • Appearance
  • Optical requirements
  • Whether or not part is for outdoor use

A plastic machining expert has the knowledge and expertise to help you select the best material for plastic machined parts and plastic prototypes according to the necessary specifications and considerations.

At EPP Corporation we provide design application, engineering, and purchasing assistant to all customers for both plastic machining production and fast plastic prototypes.

We also have an online plastic design as a free, excellent resource that compares different materials based on above criteria, as well as comparing the plastic materials side by side

To download our FREE Plastic Properties Handbook and Design Guide CLICK HERE

Plastic Machining: Selecting The Right Material-Water Absorbtion

Not all plastic materials are suitable for every application. Properties such as temperature, impact strength, and wear resistance must be evaluated, in order to select the perfect material for a the specific plastic machined part’s application.

When selecting the proper material for any specific plastic application, the choice should be made given with an emphasis on the most crucial properties for the part’s specific use. Impact strength is often a critical property that must be considered.

Water absorption refers to a material’s ability to soak water and moisture, measured at a rate of percentage per 24 hours. This particular specification is crucial to analyze when a custom plastic machined part will be utilized in a high humidity application. The higher a plastic materials water absorption rate, the greater a parts dimensions will increase.  Such an increase in size will also change tolerances if a material with a high absorption rate is selected for humid applications.

If your plastic machining needs require a low water absorption rate or a rate of zero, the following materials should be considered as possible solutions:

In order to select the correct material, download the Plastic Properties Handbook
Materials are compared to one another among a wide range of design considerations, leading to a very efficient selection process.

Plastic materials vary vastly and selecting the right one for your application is crucial for a plastic machined parts’ success.

custom plastic machining

Plastic Machining:Plastic Prototypes Vendors, How To Select The Best

Guidelines For Selecting The Perfect Plastic Machining Vendor For Custom Prototypes

When selecting the right vendor for plastic prototypes, the process is similar to selecting the right plastic machining production vendor.  However, a greater emphasis on speed while maintaining the same quality of a production plastic machined component.  Of course, a great advantage is present for companies that get innovations to market fastest.  The goals of new product development are to create a revolutionary product, improve upon an existing product, or often to stay ahead of the competition.  Receiving FULLY FUNCTIONAL plastic prototypes fast will allow a company to reach and exceed those goals.

The following guidelines can help you locate a fully-qualified, cost effective plastic machining vendor for all your plastic machined components:

  1. Material Knowledge
  2. Purchasing Practices
  3. Equipment
  4. Quality and Price
  5. Looking For the Best

Focusing on plastic prototypes, here are the guidelines to follow to select the best plastic machining vendor for the job:

  1. Plastic prototypes produced and delivered in under a week
  2. Plastic prototypes are fully functional
  3. Highest quality for the tightest tolerances  (up to +/- .001″)
  4. Vendor capable of simple and complex designs
  5. Free application engineering

Not all plastic machining vendors are created equal, and capabilities may very depending on vendor.  Few plastic machining vendors are capable of turning around FULLY FUNCTIONAL plastic prototypes in under a week.  Plastic machining vendors should also provide contaminant free plastic machined components and plastic prototypes.  Speed, the highest quality, and full functionality are key in plastic prototyping for new products.  R&D budgets may have taken months to be approved, don’t delay production.

Contaminant free plastic prototypes is under a week, produced on plastic only equipment.  FULLY FUNCTIONAL from plastic machining experts EPP Corporation.  The ISO Certified experts in plastic machining to the critical instrumentation, medical, aerospace, fluid power, and medical industries at EPP are here for your plastic machining and fast plastic prototype needs.

For more details on selecting a plastic machining vendor CLICK HERE

For more information about our fast plastic prototypes service CLICK HERE

For more details about contaminant free plastic machined parts CLICK HERE

Plastic Machining:Selecting The Right Plastic Material-Thermal Expansion

Not all plastic materials are suitable for every application. Properties such as temperature, water absorption, and wear resistance must be evaluated, in order to select the perfect material for a the specific part’s application.

When selecting the proper material for any specific plastic application, the choice should be made with an emphasis on the most crucial properties for the part’s specific use. Thermal expansion is often a critical property that must be considered.

Thermal Expansion refers to a material’s ability to expand do to changes in it’s environment’s temperature. Specifically in applications in which a component is to experience varying temperatures, it is crucial to analyze the plastic material’s coefficient of thermal expansion.

If your parts require minimal thermal expansion, the following materials should be considered as possible solutions:

In order to select the correct material, download the Plastic Properties Handbook
Materials are compared to one another among a wide range of design considerations, leading to a very efficient selection process.

Materials vary vastly and selecting the right one for your application is crucial to a plastic machined part’s success.