TPM Metalcraft Minute

Your Source for Investment Casting Knowledge

April 16, 2015, Volume 6

Contact Antonio Garcia for any casting questions.

The 4 Main Departments in Investment Casting

An Investment Casting Facility can be broken into 4 major departments:


  • Wax
  • Shell
  • Foundry
  • Finishing

Why is the shell building so important?

The shell building process is one of the most important processes in the production of an investment casting. The ceramic shell will be the mold for the molten metal later in the process and is responsible for maintaining the intricate details and surface finish of the casting. The ceramic shell is also responsible for maintaining dimensions through its engineered thermal properties and careful application.


A good shell is strong and permeable (air and gasses can pass through) but weak enough after casting for easy removal from the metal parts. A good shell is also consistent in that the slurry is applied and drained in such a manner to deliver even coats. Much of the successes and failures in making investment castings is due to the shell building process.

Steps In Creating The Investment Casting Shell

Technical Sales Manager

Antonio joined TPM in August 2014 and has been in the investment casting industry since 2010. He has expert knowledge in the shell process as well as a strong general knowledge of foundry processes. He has extensive sales and management experience in various industries spanning 11 years. As a Sales Engineer, Antonio successfully grew business by taking a truly consultative sales approach. He used his technical knowledge and ability to build lasting relationships with customers to truly address their corporate goals and objectives. He has used these strong business partnerships to offer and implement products and solutions, positively impacting the customer's bottom line. As Technical Sales Manager (and author of this newsletter) at TPM he is continuing this tradition of delivering products and solutions to address customer's business needs. His goal at TPM is to achieve and maintain Trusted Adviser status with customers resulting is strong business partnerships. Contact Antonio if you have any questions regarding any Investment Casting needs.

Next Issue

  • Shell Dipping Process- Materials and their importance
  • Meet our Project Engineer

What Our Customers Say...

"With TPM, it's correct, it's well packaged, it's efficient. It's always a time savings!" - Kevin Campisi, Cam-Tech Products, Inc.


"TPM provides great quality parts and outstanding communication. With TPM parts I have no concerns about rework or scrap." - Larry Murray, SMC, Inc.