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...work since tooling is easily modified. Male forming allows multiple parts to be formed in one cycle, but this technique needs careful design and control of production parameters. Re-entrant parts produced using split tooling and sliding surfaces, but with increase in die cost and cycle times. Pressures depend on material and component size and geometry: 350–1500 kPa is...

...works for ours and is a far neater approach than including every Kuiper belt object as a planet – thousands of them, which would be ridiculous. The alternative of defining a size or mass minimum at which an object ceases to be a planet would suffer from our variable and imperfect ability to measure their size or mass remotely. [Image of the Kuiper Belt. The background...