My block will not close

A block must be a single closed polyline before it can be inserted cleanly. If the closure check fails, the gap is almost always one of three things.

1. The tolerance is too tight for the source

A photograph has soft edges. If the closure tolerance is set below the pixel noise of the image, the tracer stops short of the first vertex. Raise the tolerance one step and regenerate.

2. The source has a genuine break

A mark-up drawn with a gap, or a photo where a shadow cuts the outline, produces a genuine break. Use the vertex readout to find the open end, then close it in the source or add the closing segment in the editor.

3. The outline was traced as two loops

If the shape has an inner void, the tracer may produce two loops. A block with a void needs the outer loop closed and the inner loop as a separate closed polyline on the same layer.

Still stuck

Raise a ticket with the source image and the exported DXF attached. We can usually tell you which of the three it is from the vertex count alone.