![]() The block definition will retain the information about the original layer, colour, and line type properties of the entities that are contained within your block. You can move your block to any layer you wish. Your block will always be inserted on the current layer. Attribute information can be extracted to a table or excel spreadsheet to form a schedule or a bill of materials. The Attribute definition is contained within each block, but the information that the attribute holds can be different for each instance of that block. ![]() An attribute is a label or tag that contains information. Block Attributesīlocks can also contain Attributes. Each entity could be on any layer and could have different colour, line weight and line type properties. Lines, arcs, circles, text or even other blocks. If you edit a block you are editing the block definition and all instances of that block will change.Ī block definition can contain any number and any kind of entities i.e. You can access the block definition via any instance of that block. The block definition is stored in the magical ether of your drawing file. A copy of a block is know as an ‘instance’ of a block definition. A block ‘ Definition’ and a block ‘ Instance’. ![]() Unlike groups you cannot change the geometry in one block without changing all the copies of that block.* Block Definitions and InstancesĪutoCAD Blocks have two parts. Unlike AutoCAD’s Groups If you change the geometry that is contained within a block all copies of that block will also update. AutoCAD blocks are a way of collecting geometry together into one object which you can use repeatedly in your drawings. ![]()
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