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<blockquote data-quote="OnOff" data-source="post: 499762" data-attributes="member: 16173"><p>Not a bad analogy to think of wood grain equating to layers. Layer orientation is important but it's a bit more complicated than that. Each successive layer in effect bonds into the last. In fact there's a technique called "ironing" for smoothing the last/top layer whereby the hot end is "pushed" into the proceeding layer and sort of remelts the lot.</p><p></p><p>The <strong>in</strong><strong>fill </strong>ratio is interesting. Think 100% infill is 100% solid plastic. 50% infill is half the weight. You can have two pieces that look identical but one is a tenth of the weight. There's a skin around the infill that provides a tough outer shell. </p><p></p><p>This is a failed fridge handle in PLA that went haywire. Good for seeing the thick outer skin and the structure of the infill:</p><p></p><p>[ATTACH]10805[/ATTACH]</p><p></p><p>I can't break this btw and I'm a big lad.</p></blockquote><p></p>
[QUOTE="OnOff, post: 499762, member: 16173"] Not a bad analogy to think of wood grain equating to layers. Layer orientation is important but it's a bit more complicated than that. Each successive layer in effect bonds into the last. In fact there's a technique called "ironing" for smoothing the last/top layer whereby the hot end is "pushed" into the proceeding layer and sort of remelts the lot. The [B]in[/B][B]fill [/B]ratio is interesting. Think 100% infill is 100% solid plastic. 50% infill is half the weight. You can have two pieces that look identical but one is a tenth of the weight. There's a skin around the infill that provides a tough outer shell. This is a failed fridge handle in PLA that went haywire. Good for seeing the thick outer skin and the structure of the infill: [ATTACH]10805._xfImport[/ATTACH] I can't break this btw and I'm a big lad. [/QUOTE]
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