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CAD tip CAD tip # 6119:

Question CAD 
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Q - question

Lost dynamic properties (grips) of dynamic blocks.

A - answer Some dynamic blocks inserted in a drawing may be displayed without their manipulators - grips - so you cannot use their dynamic properties (parameters, behavior, visibility states).

This problem is usually caused by:

  1. Inserting the dynamic block with non-uniform scale X-Y-Z (different scales in the individual axes) -- such blocks cannot make use of the dynamic functions
  2. Non-standard edit or transform operation on the block - e.g. with an add-on application (which does not count with "dynamic" versions of blocks)
  3. Nesting dynamic block inside another block or xref
  4. Processing DWG files in a non-Autodesk application -- applications like IntelliCAD, ZwCAD, ProgeCAD, Microstation, DWG Editor, etc. do not work with the official (genuine) DWG format and they may damage the drawing contents
  5. Saving the drawing to a too old DWG or DXF format (e.g. R14) and reading it back
  6. Rotate/align - rotation (or other transformation) of a dynamic block located on very large coordinates may cause rounding errors which result in temporary loss of its dynamic functions
In cases 2. and 6. you can solve the problem with the CADstudio DynReset utility - see www.cadstudio.cz/download. This utility restores the dynamic grips in most situations caused by internal settings of a dynamic block.

The LISP application DynReset also checks system variables which may suppress grip display.

ACAD2009ACAD2008ACAD2007ADTCivil
100% *  CAD 
30.4.2008    15645×  
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See also:
Tip 11497:Automatic grouping of drawing objects.
Tip 11439:Replace block instances (incl. dynamic) with another block.
Tip 11404:Operations with attributes inside a block - fields.
Tip 11354:Animate dyn.block parameters and dim.constraints in AutoCAD DWGs.
Tip 11198:Justified attribute text in mirrored blocks (AutoCAD)


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