Rubber band outside and inside?

[Pete.IRL (Peter O D)]

Can the rubber band tool be applied to the inside of a doughnut (to hug the inside circle of the doughnut) and also have a shape welded to the inside of the Inner rubber band.

Outer rubber band
Gap (with content)
Inner rubber band
Shpe/Image

[thesven (Wren)]

You’ve got a doughnut shape—outer ring, gap in the middle, and then the inner ring. You want to use the rubber band tool (LightBurn’s shape-tracing or offset-like selection tool) to hug the inside of the doughnut, and then weld a shape or image to that inner curve. Here’s the honest breakdown:

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Can you do it?

Sort of—but not directly with the “rubber band” tool the way you’re describing. Rubber band selection in LightBurn is mostly a selection tool, not an object manipulation tool. But I get what you’re trying to do: hug the inside path and weld something to it.

So here’s how you actually pull that off:

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Step-by-step: Hug the Inside of a Doughnut and Weld a Shape

1. Create Your Doughnut

• Draw two circles: one big (outer ring), one small (inner hole).
• Select both, go to Boolean Subtract or Weld (depending on order) to get your actual doughnut ring shape.

2. Use Offset to Trace the Inner Curve

• Select the inner circle before welding.
• Use Offset Shapes and select Inward, set a small offset like -2mm if you want a tight trace.
• This gives you a clean path hugging the inside of the doughnut.

3. Place Your Shape

• Bring in your shape or image.
• Position it so part of it overlaps that new inner offset curve.

4. Weld the Shape to the Inner Curve

• Select both your shape and the inner offset line.
• Use Weld or Boolean Union (depending on whether your object is open or closed paths).
• This’ll merge the shape into the path that hugs the inner edge of the doughnut.

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So to be clear:

• Rubber band doesn’t “snap” to edges—it selects.
• Offset is what you want to trace the inner edge.
• Once you get that curve, welding other vectors to it works like any other shape.