It is completely down to the drafter to decide what the units will represent.
Just redefining the blocks origin won’t do – this will move your blocks all over the place (don’t even mention blocks that have been rotated or mirrored).
To rescue an Auto CAD block with an undefined Insert point I use the following steps: Occasionally you’ll need to edit the location of Attributes to make your blocks look super tidy and neat.
Draw order is one of those weird things in Auto CAD that doesn’t always work as you expect.
DRAWORDER is really useful when building Wipeouts into your block definitions to mask Auto CAD geometry.
To get around this, Autodesk introduced the INSUNITS setting (INSert UNITS).
You set this when you create your block definition. Every Auto CAD DWG has a UNITS value – you can see what your units are set too in your drawing by typing ‘UNITS’ at the command line.What could be quicker than copying and pasting a detail you already did right?Design and Motion’s own Mike Thomas has written an excellent series on creating blocks with Auto CAD. For those of you who are already creating Auto CAD blocks, you’ll know that there is a journey between creating Auto CAD blocks, and creating Did your Parametric or Dynamic blocks go a little kooky when you added just that one more parameter/action set?The value codes will be a combination of the following: 0 Not updated 1 Updated on open 2 Updated on save 4 Updated on plot 8 Updated on use of ETRANSMIT 16 Updated on regeneration 3 = Update on Open and Save 9 = Update on Open and ETRANSMIT 31 = Everything After you’ve been creating and using blocks for a while, you’ll realise how important it is to set an Insert point when you define your block.However, we all have off days – and it’s easy to forget this step.Did you ever create a block only to realise later that you couldn’t explode it?