# Layers vs. Blocks

**URL:** http://forum.qcad.org/t/layers-vs-blocks/2310
**Category:** QCAD Tips and Tutorials
**Created:** [October 2, 2015, 7:42am UTC](http://forum.qcad.org/t/layers-vs-blocks/2310 "2015-10-02T07:42:22Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![andrew](http://forum.qcad.org/user_avatar/forum.qcad.org/andrew/32/7_2.png) [@andrew](http://forum.qcad.org/u/andrew)
#### Post date: [October 2, 2015, 7:42am UTC](http://forum.qcad.org/t/layers-vs-blocks/2310/1 "2015-10-02T07:42:22Z")

</div>

**Blocks**  
Blocks (in the context of CAD) are reusable groups with a name. A block might for example represent a piece of furniture in a floor plan or a screw, bolt or washer in a mechanical drawing.

Entities can be part of a block or part of the main drawing (in which case they are on the ‘\*Model\_Space’ block, the main block which represents the entire drawing).

**Layers**  
Layers are used to organize drawings in a different way. Layers assign meaning and attributes to entities. For example all lines on layer ‘wall’ might represent walls on a floorplan. All lines on layer ‘center’ might represent center lines in a mechanical drawing and are shown in red with a dash dot pattern. All dimensions and text labels are typically also placed on separate layers.

Every entity in a drawing is placed on a layer, depending on its meaning.

 ![Screen Shot 2015-10-02 at 09.35.32.png](https://cdn.qcad.org/original/2X/3/359584015af3664f14178edd99238df743c9c523.png)