Reconstruction examples

Input and output

Scanned drawings rebuilt as editable CAD with Astra.

The first two come from the matrix experiment, where the drafter edited its own saved candidate; the overlay shows the result over the scan. The others show the latest saved QCAD version. Download the native file to inspect its objects and layers. Physical dimensions still require confirmation.

Gear housing section, edited in place

A sectioned right-angle gear assembly: two shafts, ball bearings, gear webs and native QCAD section hatches. QCAD / Astra, edit-capable strategy. Drafter decisions: edit (candidate 1; replaced 7, preserved 10); edit (candidate 2; replaced 6, added 1, preserved 11).

Original scan of drawing 03 — Input: original scan

Native QCAD reconstruction of drawing 03 — Output: editable CADRendered from the saved, reopened file.

Reconstruction drawn over the original scan of drawing 03 — Overlay on the scanInternal score 91, judge adherence 87/91 coverage, ink precision 78%.

Download DXF Compare all versions in the overlay viewer

Motor and screw jack, edited in place

Front and side views of a geared motor driving a lead screw, rebuilt as FreeCAD sketches without hatching. FreeCAD / Astra, edit-capable strategy. Drafter decisions: edit (candidate 1; replaced 6, preserved 14).

Original scan of drawing 06 — Input: original scan

Native FreeCAD reconstruction of drawing 06 — Output: editable CADRendered from the saved, reopened file.

Reconstruction drawn over the original scan of drawing 06 — Overlay on the scanInternal score 88, judge adherence 90/89 coverage, ink precision 82%.

Download FreeCAD document Compare all versions in the overlay viewer

Mechanical assembly

Three views, a longitudinal section, native hatches and union fittings. QCAD / Astra.

Original degraded scan for drawing 05 — Input: original scan

Actual native QCAD reconstruction of drawing 05 — Output: editable CADGenerated geometry, rendered from the saved DXF.

Download DXF

Section and plan

Sectioned housing, internal passages, concentric details and mounting holes. QCAD / Astra.

Original degraded scan for drawing 01 — Input: original scan

Actual native QCAD reconstruction of drawing 01 — Output: editable CADGenerated geometry, rendered from the saved DXF.

Download DXF

Turned component

Stepped profile, rounded transitions and a knurled band. QCAD / Astra.

Original degraded scan for drawing 07 — Input: original scan

Actual native QCAD reconstruction of drawing 07 — Output: editable CADGenerated geometry, rendered from the saved DXF.

Download DXF

What is included

Downloads contain native DXF or FreeCAD entities, not embedded scans. The ten supplied PDF and TIFF inputs are available in the drawings folder.

Selected inputs and outputs were cleared for publication by the user. This permission does not change ownership of the original drawings or license them under MIT.

How the system is built Test measurements