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RePliKote Applications

Mechanical Reinforcement

Sealing Barriers

Electromagnetic Shielding

Digital Sculptures

 

MECHANICAL REINFORCEMENT

Mechanical Reinforcement Applications

Coating RP models makes them more robust for handling or functional testing.  Below are several examples of how RePliForm’s customers use our coating to get more performance from their models.

Pitney Bowes Reversing

 Arm Assembly

Uncoated SL models typically failed at 5% of the cycles needed for complete testing but there was concern about part tolerances if a coating was added.  High precision coated model was made by first displacing surfaces inward by 0.05 mm then applying 0.05 mm coating of copper + nickel.  Coated models withstood 400,000 cycles without failure.

Multiple Design Iterations

The coated models to the right are two candidate designs for the same part. Uncoated SL models broke when thick envelopes went through the machine but the reinforcement provided by the coating allows part designs to be subjected to the complete range of testing without having to build prototype tooling.

Photo courtesy of Boeing Corp.

Boeing Aircraft Fairing Mock Up

The coated SL models to the left are some of the biggest done in one piece by RePliForm. The larges parts are 1375 mm (54”) in length.  The customer needed to prevent sagging of the models when they were used in fit checking on an aircraft.  The coating performed so well that after the engineering checks were completed, the parts were used for marketing purposes and taken to customer locations to show off new hardware.

Cross Car Beam Mockup

Sheet metal fabrication of a cross car beam was not fast or accurate enough to test component assembly and plastic RP models were not rigid enough on their own.  By coating RP models with 0.15 mm of copper + nickel, the customer was able to take advantage of the accuracy of the SLA and SLS models and provide enough rigidity to support a variety of instrument panel components..  This cross car beam mock up is more than 1500 mm in length, was coated in pieces and assembled (see photo upper right).  It was used confirm the fit of instrument panel components and helped identify more than 80 design issues.

 

Photos Courtesy of General Pattern

Coated Medical Device

The parts on the left are Objet models ~40 mm long.  They were built with working threads directly in the machine.  Application of 0.025 mm of copper + nickel dramatically increased the strength of the parts yet still permit the threads to function.
 

 SEALING BARRIERS

Sealing and Barrier Applications

 

Photo-cured SL resins are known to be sensitive to heat and      humidity.  A 0.05 mm thick metal coating allows even very thin walled parts to be used under water.  The barrier properties also allow SL models to be used in applications where out-gassing of the SL resin causes interference.

Sensor Manifold

Manifolds made from SL resins out-gassed to such an extent that they interfered with sensor readings.  The thin metal coating applied to the models proved to be an effective barrier while also making the parts mechanically more robust

Water Tank Component

The use of a thin walled (1.5 mm) SL part in a water tank resulted in system malfunctions within 2 days due to excessive swelling. The metal-coated SL component met functional requirement during the entire testing phase.

 

 

 

 ELECTROMAGNETIC SHIELDING

Electromagnetic Shielding Applications

Copper and nickel-plating on plastic parts is a common method used to control electromagnetic interference, radio frequency interference and static discharge problems with plastic components.  The thick (by normal plating standards) metal coatings RePliForm typically applies are more than up this task. Below is an application that takes advantage of the high electrical conductivity or our coatings.

Radar Reflector

A customer wanted to use an SL model as a radar reflector.  In the past, Sensor Technologies, Inc. (STI) – a firm specializing in advanced radar systems, machined their reflectors as a matter of convenience, precision, and low-volume.  Setup time in machining always proved to be a major portion of the cost simply due to the shape of their reflectors.  Sometimes this led to compromises in size, shape, eye-appeal, etc..  But, with recent RF testing of a metal coated SLA reflector, STI realized they can have the same performance and delivery without the high cost of machining.  With volumes as low as quantity 5, a cost savings of 70% was realized.

 
 DIGITAL SCULPTURES

Electroformed Coatings on 

Digital Sculptures

 

Antipot by Bathsheba Grossman

This 4” Antipot digital sculpture by Bathsheba Grossman was designed in digital format and built as an SLA model.  The model was then coated with more than 0.25 mm (0.010”) of copper returned to the sculptor who applied a patina finish and polished the edges to highlight them.

Noom by Bathsheba Grossman

This 4" sculpture, also built using Sterolithography, was first coated with a base of copper followed by a top coat of nickel.  Total coating thickness 0.08 mm (~0.003”).

Coated Z-Corp Model

The model to the left was built using the Z-Corp starch based material, sealed with cyano-acrylate then coated with ~0.1mm nickel.  Customer then sanded and polished the model to produce the finish part shown on the left.

 

 

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