10-20-2026 Q&A: 3D Toolpath Optimization, Custom Clipart, and Double-Sided Alignment

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In this Q&A session, we covered troubleshooting 3D model heights and the differences between modeling planes and zero planes. We discussed strategies for drastically reducing 3D carve times by optimizing toolpaths and raster angles. The session also addressed how to properly save custom clipart, methods for aligning double-sided carves on live edge slabs without drilling into the final piece, and using multiply combine modes to blend 3D components into recessed dishes. Additionally, we touched on building safety enclosures for CNC machines to reduce noise and prevent accidents.

Key Tips Learned in this Q&A:

• 3D Toolpath Optimization: You can reduce cut times from hours to minutes by using a pocket toolpath with a larger bit for flat areas and restricting the detailed 3D finish toolpath strictly to the 3D model boundary.

• Changing Raster Starting Points: If your 3D or pocket toolpath is starting on the deep end and risking tool damage, add 180 degrees to your raster angle setting. This forces the machine to start on the shallow side and gradually work its way into deeper cuts.

• Saving Custom Clipart: When creating and saving custom clipart, ensure no stray vectors are hiding outside your main workspace and delete any empty layers. Using the "zoom to active drawing limits" tool helps ensure you are only saving the intended artwork.

• Double-Sided Alignment on Live Edge Wood: To align a double-sided carve without drilling dowel holes into a pristine surface, attach a sacrificial piece of MDF to the machined side using strong double-sided tape. You can then drill your alignment holes into the MDF and the spoilboard.

• Using the Multiply Combine Mode: When placing a 3D object inside a dish, duplicate the dish, change its combine mode to "Multiply," and place it above the object in the component tree. This creates a dome effect that smoothly tapers the edges of the model into the recessed dish without losing center detail.

Questions Answered in this Q&A:

• 00:04:01 - Chuck: Fixing an unwanted offset and flat spot on a 3D EasyCreate model.

• 00:15:02 - Would there ever be a reason to set a base height below zero?

• 00:15:23 - Is there a way to set the zero plane at an exact position?

• 00:16:38 - Is there a checklist for 3D optimization?

• 00:17:31 - Tim: What is the difference between a modeling plane and a zero plane?

• 00:21:32 - Can you tilt a 3D model without using a zero plane?

• 00:21:56 - Scott: Can you limit a zero plane to a specific vector shape?

• 00:27:51 - Dave: Will changing the cut direction (raster angle) make deep cuts easier on the bit?

• 00:45:14 - Peter W: Troubleshooting unexpected gaps and ridges in V-carve inlays.

• 00:54:26 - Matt: Why is VCarve importing unselected layers alongside custom clipart?

• 01:06:49 - Mac Woodworks: How do you align a two-sided live edge carve without drilling holes into the piece?

• 01:16:36 - Alan: How do you properly level a 3D dog image inside a recessed dish?

Keywords:

3d toolpaths, zero plane, modeling plane, raster angle, safety enclosure, v-carve inlays, custom clipart, double-sided carve, live edge alignment, multiply combine mode