Construction Lines is a tool for accurate CAD style modelling. Build snappable guide points and edges, draw lines and primitive shapes in place, automatically create faces in closed geometry, precisely move, duplicate and rotate geometry around a scene and cut-through meshes with extrude.
Guide edges and points allow for a construction workflow where guides are set and models are then constructed within these guides. The guides won’t interfere with model geometry and can be toggled off and on when required. Guides edges will disappear when working outside of Construction Lines and neither Guide Edges nor Guide Points will be rendered.
Construction Lines allows for rectangles, circles, and arcs to be drawn in place from precise snap points on existing geometry or guides. These can be drawn from anywhere on a 3D model without the need for Blender’s 3D cursor to define an Add location. Drawing shapes onto existing faces will automatically cut into the existing face.
Feature List
Create snappable guide edges and points
Precisely measure distances
Build rectangles, circles and arcs anywhere in your scene
Draw lines simply by clicking and dragging in the 3D viewport
Lines will automatically fill in faces where geometry is closed
Use lines or shapes to cut into or divide existing geometry
Build lines, shapes and guides to exact size with numeric input (including mathematical operators * / + -)
Limit drawing and movement to the X, Y or Z axes
Auto snap to Perpendicular edge direction and edge extensions
Accurate object movement with snap points or numeric input
Cut into existing geometry by drawing onto existing faces (Construction Lines will automatically create the extra required geometry), allowing shapes to be extruded in and out of existing meshes.
Extrude and cut-through meshes, object rotations, horizontal guides and direction locks.
**New features – Grid snapping, automatic duplication and arrays of objects and geometry, box selection, Edit mode move and delete, persistent dimensions on guides and new face creation.
Version 0.9.8
Released: 20/07/2026
Release Notes:
New Features & Bug Fixes:
Note: Construction Lines can now be installed as a Blender extension (allows for automatic update notifications). Use the .zip with the name ending “_extension.zip” if you are installing on Blender 4.2 or above; otherwise, for Blender 3.6-4.1, use the .zip with the name ending “_legacy.zip”
Supports Blender 5.2
Construction Lines is now an Extension (Blender 4.5 onwards). If it was purchased through Superhive, new updates can be installed with a single click, from within Blender (please see Superhive’s documentation). Note: Please be sure to uninstall the previous version of Construction Lines, which is registered as an add-on rather than an extension.
Feature: The extrude tool now includes repeat functionality. Double-clicking a face after an initial extrude will extrude the face by the same distance as before
Feature: Dimension length can be edited by clicking the dimension label and entering a new value. Included are options to affect either the start, end or both.
Feature: Added Fillet and Bevel functionality. These are passthroughs to Blender’s own bevel operator and are a quality-of-life feature, so that they both can be achieved whilst CL is running
Feature: Input navigation settings are now taken from Blender’s settings, so for users using non-default navigation methods for Viewport rotating, panning, etc. these are now passed into Construction Lines. Note: If you are using the right mouse button, the context menu will need to be reassigned in Construction Lines preferences
Improvement: Snapping is now a lot more responsive and locks onto vertices and edges more positively
Improvement: The Extrude tool now starts automatically when activated, if faces are already selected
Improvement: Better Edit mode selection handoff between CL and Blender. This is especially useful if you have geometry selected and then start CL; the geometry remains selected
Fix: Issues with drawing multiple rectangles on an existing face. After a few rectangles, the following ones would stop cutting into the mesh and sometimes orient incorrectly
Downloads Section Below:
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