Graco: Nylon 3D Printed Pressure Check Hand Tool

   By TriMech Marketing on August 31, 2023

Graco Inc. supplies technology and expertise for the management of fluids and coatings in both industrial and commercial applications. It designs, manufactures and markets systems and equipment to move, measure, control, dispense and spray fluid and powder materials.

Watch the video to learn more about Graco’s 3D printed pressure check hand tool. 

Challenge

Paint sprayers on Graco’s assembly line require pressure control checks. The hand tool to adjust the pressure incorporates splines to engage and turn the control knob. However, the splines on the existing ABS plastic tool typically wear out after repeated use. This requires the manufacture of new tools regularly. The desired solution was an easily fabricated new tool with extended life that did not have to be machined.

Graco 3D Printed Tool

Solution

With the acquisition of a new F370 CR composite 3D printer, Graco
engineers opted to print the tool using FDM Nylon-CF10 thermoplastic. This material is filled 10% by weight with chopped carbon fiber, providing it with greater strength and toughness than ABS. An added benefit of Nylon-CF10 is its fine surface finish on printed parts. This characteristic resulted in better-defined splines, resulting in a more positive engagement with the pressure control knob.

Impact

Graco SavingsAfter several months of typical use, a review of the tool showed no signs of wear or indications of a compromise in functionality. Graco engineers expect at least a 10X life improvement of the tool over the previous ABS version. Additionally, the 3D printed tool was a less costly solution and offered the design freedom to make an ergonomic handle faster and easier than a machined alternative.

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TriMech provides thousands of engineering teams with 3D design and rapid prototyping solutions that work hand-in-hand, from sketch to manufacturing. InterPro became a part of TriMech Solutions LLC in 2021.

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