11-04-2025 Q&A: Roughing Pass Depth, Vector Validator, Bitmap Cleanup, and AI Modeling in Vectric

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In this final Q&A session with Michael before his transition, the group explored several advanced Vectric topics — from troubleshooting roughing pass depth errors to efficiently cleaning up bitmap vectors and using the Vector Validator tool effectively. Michael also demonstrated the new Vectric AI modeling beta, comparing its results with manual modeling in Aspire.

Key Tips Learned in this Q&A:

• Z-Level vs 3D Raster Strategies: Z-Level roughing stops at each pass depth without cutting remaining material, while 3D Raster cuts to the machining allowance. Choose Raster for complete clearing, even if it’s slower.

• Avoiding Burn Marks: Burn marks often come from high spindle RPMs or slow retract speeds. Try reducing spindle speed (~13,000 RPM), sharpening bits, or adjusting retract/rapid rates.

• Vector Validator Usage: Intersections and overlaps are not always errors — they can be intentional design overlaps. Always verify using toolpath previews before making changes.

• Editing Bitmaps: Use the Crop Bitmap feature with closed vectors to remove unwanted areas or switch to high-quality formats like PNG or 16/32-bit BMP for cleaner trace results.

• Recovering Lost Vectors: You can sometimes recreate vectors from G-code using a program like G-Code Ripper, exporting toolpaths as DXF for re-import into VCarve or Aspire.

Questions Answered in this Q&A:

• 00:03:03 – Why does my finish pass plunge too deep when carving a 2-inch dish?

• 00:12:58 – When should I use Z-Level versus 3D Raster roughing strategies?

• 00:19:10 – How can I prevent vertical burn lines where the bit retracts during carving?

• 00:32:24 – Why is my Vector Validator showing multiple intersections on my pilgrim hat design?

• 00:38:07 – How can I remove or edit details from a bitmap without leaving messy vectors?

• 00:48:14 – How can I create single-line (centerline) drawings from clip art?

• 00:51:40 – What should I do if a saved toolpath disappears in VCarve?

• 00:59:48 – What’s the difference between grayscale, height maps, and TIF files for 3D carves?

• 01:01:22 – Why don’t I see sliders for shape height, tilt, and fade in my newer Aspire version?

• 01:06:44 – Discussion and demo of the Vectric AI modeling beta and its creative potential.

Keywords:

vectric, aspire, vcarve, z-level, 3d raster, machining allowance, burn marks, retract speed, vector validator, bitmap cleanup, crop bitmap, g-code ripper, toolpath recovery, grayscale, ai modeling, michael q&a, roughing pass