Saturday, September 18, 2010

BLOCK

BLOCK
Draw menu – Block – Make
Command line: block
Defines and names a block.

Name – Names the block. The name can have up to 255 characters and can include letters, numbers, blank spaces, and any special character not used by Microsoft® Windows® and the program for other purposes, if the system variable EXTNAMES is set to 1.

Note – The block name and definition are saved in the current drawing. You cannot use DIRECT, LIGHT, AVE_RENDER, RM_SDB, SH_SPOT, and OVERHEAD as valid block names.

Base Point – Specifies an insertion base point for the block. The default value is 0,0,0.

X – Specifies the X coordinate value.
Y – Specifies the Y coordinate value.
Z – Specifies the Z coordinate value.

Pick Insertion Base Point – Temporarily closes the dialog box so that you can specify an insertion base point in the current drawing.

Objects – Specifies the objects to include in the new block and whether to retain or delete the selected objects or convert them to a block instance after you create the block.

Select Objects – Closes the Block Definition dialog box temporarily while you select the objects for the block. When you finish selecting objects, press ENTER to redisplay the Block Definition dialog box.

Quick Select – Displays the Quick Select dialog box, which defines a selection set.

Retain – Retains the selected objects as distinct objects in the drawing after you create the block.

Convert to Block – Converts the selected objects to a block instance in the drawing after you create the block.

Delete – Deletes the selected objects from the drawing after you create the block.

Objects Selected – Displays the number of selected objects.

Settings – Specifies settings for the block.

Block Unit – Specifies the insertion units for the block reference.

Scale Uniformly – Specifies whether or not the block reference is prevented from being non-uniformly scaled.

Allow Exploding – Specifies whether or not the block reference can be exploded.

Description – Specifies the text description of the block.

Hyperlink – Opens the Insert Hyperlink dialog box, which you can use to associate a hyperlink with the block definition.

Open in Block Editor – Opens the current block definition in the Block Editor when you click OK.

Exercise – We will create our First block for Door in our drawing Assignment3.dwg. Using the Block Definition Dialogue put the name Door1, select the lower corner of the rectangle that is attached to the wall center as the Insertion Point, and select the Arc and the Rectangle we have drawn to denote the door opening. Select the appropriate options to finish our Block Definition.

Congratulations! You have just created your first AutoCAD Block Definition. We will learn more about Block Definitions and Attributes. Stay tuned…!

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