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+====== Strong 3D prints ======
+Notes on making mechanical parts stronger.
+  * Orientation of layers probably most important factor. They pull apart much more easily than lines break.
+  * ePLA / matt: some websites say it is weaker, some say stronger, than normal PLA.
+  * Layer height: Most people seem to say thicker is stronger.
+  * Heat: hotter, and with part fan low / off should give better adhesion.
+  * Extrusion: overextruding might help.
+Much of this is the same as trying to make prints [[watertight_3d_prints|watertight]].