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	* Design in 45-degree maximum overhangs in horizontal holes using tear-drop and truncated tear-drop shapes.		* Design in 45-degree maximum overhangs in horizontal holes using tear-drop and truncated tear-drop shapes.
-	=== Diamonds at Any Angle ===	+	=== Polar Diamonds ===
		+	* Think polar coordinates to create diamond-shaped tunnels at any elevation.

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Revision as of 02:12, 11 May 2011

Contents 1 Model Design for Re-Use 1.1 Positive and Negative Space 1.1.1 Keep 'em Separated 2 Model Design for 3D Printing 2.1 Orient for Your Strengths 2.2 Over Hangover 2.2.1 Teardrop Tunnels 2.2.2 Polar Diamonds

Model Design for Re-Use

This chapter's purpose is designed to get you thinking in terms of model re-use.

Positive and Negative Space

Keep 'em Separated

• Design your object body parts separate from your object holes

Model Design for 3D Printing

Orient for Your Strengths

• Many 3D printing processes are strong in two of three dimensions. In fused deposition modeling (FDM) techniques like those used in MakerBot and RepRap printers, the Z-axis is weakest to shearing forces.
  • Design long, thin parts in the XY plane.
  • Consider orienting irregular shapes at a diagonal X-Z or Y-Z angle for compromise.

Over Hangover

Teardrop Tunnels

• Design in 45-degree maximum overhangs in horizontal holes using tear-drop and truncated tear-drop shapes.

Polar Diamonds

• Think polar coordinates to create diamond-shaped tunnels at any elevation.