science

RepRap Snappy

RepRap Snappy is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand RepRap Snappy rather than just read about it. In short: The RepRap Snappy is an open-source fused deposition modeling 3D printer, part of the RepRap project, it is the most self replicating 3D printer in the world. The RepRap Snappy is designed to address the core goal of the RepRap project of creating a 'general-purpose self-replicating manufacturing machine'.

Key takeaways

RepRap Snappy belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect RepRap Snappy to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of RepRap Snappy from memory before moving on to harder problems.

Reference excerpt

The RepRap Snappy is an open-source fused deposition modeling 3D printer, part of the RepRap project, it is the most self replicating 3D printer in the world. The RepRap Snappy is designed to address the core goal of the RepRap project of creating a 'general-purpose self-replicating manufacturing machine'. The RepRap Snappy is able to create 73% of its own parts by volume with a design that eliminates as many of the non 3D printed parts as possible including belts and bearings which are replaced with a rack and pinion system. The name Snappy comes from the use of snap fit connectors used on the small printed parts to construct larger pieces, this both cuts down on the use of non 3D printed parts and means a smaller build volume is needed on the machine producing the parts. The only non self replicating parts on the printer are the motors, electronics, a glass build plate and one 686 bearing, the 3D printed parts take around 150 hours to create. The RepRap Snappy received an honourable mention in the Uplift Prize Grand Personal Manufacturing Prize.

External links RepRap Snappy page on RepRap.org RepRap Snappy repository on Github

References

Illustrations

Worked examples

Example 1 — a first encounter with RepRap Snappy

Start with the simplest possible case. Write down what RepRap Snappy claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to RepRap Snappy before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about RepRap Snappy ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of RepRap Snappy

In research: RepRap Snappy appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses RepRap Snappy in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: RepRap Snappy is common in secondary-school and first-year university syllabi. It links to neighbouring topics 3D printers, Open hardware electronic devices, RepRap project, so understanding it makes those chapters shorter.
In everyday life: Look for RepRap Snappy outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study RepRap Snappy in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what RepRap Snappy means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain RepRap Snappy out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is RepRap Snappy in simple terms?

Why does RepRap Snappy matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study RepRap Snappy?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on RepRap Snappy.