5 Things to Consider When Choosing Between Large 3D Printing Services Online

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5 Things to Consider When Choosing Between Large
3D Printing Services Online
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Not all 3D printing services are the same,
especially when it comes to creating large sized
prototypes. This is where you separate the boys
from the men.   3D printing is
essentially simple. A thin layer of liquid or
melted polymer or powder is deposited by a nozzle
onto a substrate where it cools and solidifies or
is cured by UV. A part is built up layer by layer
by interpreting a 3d CAD design through software.
 Printers range in size from small desktop models
to create small objects to large engineering
models to create complex prototypes.
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• Large 3D printing service bureaus use the finest,
  high-end equipments to manufacture complex
  profiled prototypes with relative ease. The
  printers are coupled with high end software and
  handled by engineer specialists that are well
  trained in the areas of the printer and software.
  
• A CAD design for a large prototype exceeding the
  capabilities of a printer is split into various
  sections. Each section is printed on a fused
  deposition modeling 3D printer using ABS or PC
  material in filament form. Expertise is required
  to slice the design into parts and then assemble
  them together using a unique welding process with
  liquid plastic to create a seamless, monolithic,
  structurally sound large part. The finished part
  looks like it emerged from a large 3D printer.

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• A complex profile prototype may have holes,
  overhangs, recesses, bridges and even threaded
  screw holes that must maintain dimensional
  tolerance after the printing is complete. ABS or
  any plastic tends to shrink on cooling and
  require precise calculations to ensure the
  finished prototype has holes or extrusions or
  recesses that are dimensionally accurate.
  Experience, skills and knowledge of the staff
  handling the equipment at a large 3D printing
  service bureau means a lot.

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• Inexperienced printers may waste a lot of
  materials before they can come up with a 3D
  printed prototype. Even then it may not have the
  required wall thickness, rigidity, strength or
  dimensional accuracy.  These issues do not exist
  when one outsources work to professionals in 3D
  printing. Even orientation of build plate and
  placement affect the final outcome as regards
  accuracy along all three axes. And post
  processing is just as important as the printing
  process.
• Where time is of the essence, an experienced
  printing service with its team of specialists and
  the best equipment always takes care of
  deadlines.
• While 3D printers are highly sophisticated and
  versatile, they too have their limitations.
  Experienced machine operators know these
  limitations and develop key solutions.

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