RePliKote Applications
Mechanical
Reinforcement
Sealing Barriers
Electromagnetic Shielding
Digital Sculptures
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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.
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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. |
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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.
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Photos
Courtesy of General Pattern |
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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. |
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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 |
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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.
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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. |
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Electroformed
Coatings on
Digital
Sculptures
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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. |
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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”). |
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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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