Frequently Asked Questions

A 3D printer reads a design file containing information about the object's shape and dimensions. Common file types include .STL and .OBJ files. The printer then lays down successive layers of liquid, powder, sheet material, or other material to build the object. The layers fuse together to create a solid 3D object. Popular methods of 3D printing are Fused Deposition Modeling (FDM), Stereolithography (SLA), and Selective Laser Sintering (SLS).

Some common materials used for 3D printing include:

• PLA – Made from corn starch, PLA is durable and biodegradable. It comes in various colors.

• ABS – ABS plastic is tough and impact-resistant. It is commonly used to make Lego bricks and other toys.

• Resin – Photopolymer resin is used in stereolithography 3D printers. It produces smooth, detailed prints.

• Nylon – Nylon powder is used in selective laser sintering printers. It's flexible and durable.

• Metal – Selective laser melting printers can print objects in metals like titanium, steel, nickel and aluminum.

Some major benefits of 3D printing in schools and classrooms include:

• Engages students in hands-on learning and problem-solving

• Allows quick design, prototyping, and product iteration

• Lets students create objects based on their own ideas

• Visualizes concepts that are hard to understand in textbooks

• Allows customization and personalization

• Develops crucial STEM skills such as design thinking

• Prepares students for future careers utilizing 3D printing

3D printing can be integrated into various subjects:

• Science – Create molecules, organs, geological formations

• Math – Print 3D shapes, polygons, symmetrical objects

• History – Reconstruct artifacts, design period costumes

• Art – Make sculptures, clay models, customized gifts

• Technology/Engineering – Design robots, machines, spare parts

When selecting a 3D printer for educational use, key factors teachers should consider include:

• Reliability and durability

• Ease of use

• Enclosed build area for safety

• HEPA filter for clean operation

• Variety of material capabilities

• Wifi connectivity and monitoring app

• Large print bed size (at least 6 inches cubed)

• Reasonable speed (4-5 inches/hour)

• Good technical support and warranty

To safely operate 3D printers in a classroom, educators should:

• Set up printers in a well-ventilated room

• Supervise students during printer operation

• Learn how to unclog and change filament/resin

• Keep long hair and loose clothing away from the printer

• Allow prints and build plate to fully cool before handling

• Wear gloves when removing prints with sharp points or edges

• Ensure students don't touch hot extruder nozzle or build plate

• Follow manufacturer guidelines for resin handling and disposal