Though it might be tempting, drawing on the defpoints layer might not be the best idea. Since the layer doesn’t plot, many designers like to use the defpoints layer to add construction lines, notes to other team members, and other information. In this post, I’ll explain why the downsides of using a defpoint layer can outweigh its advantages.

WHAT IS THE DEFPOINTS LAYER?

The defpoints layer is created automatically by AutoCAD when you create dimensions and contains the definition points of these dimensions. I’m not sure exactly what these definition points are but I know from experience that drawing on the defpoints layer can be bad news.

WHAT IS THE PROBLEM WITH DRAWING ON THE DEFPOINTS LAYER?

There are two main reasons why using the defpoints layer is a bad idea:

PROBLEM 1.

If layer zero gets frozen then everything that is on the defpoints layer is unable to be selected. This might not seem like much but if you’re not aware of it you can waste lots of time trying to work out why you can’t select anything on the defpoints layer. Not to mention if you are working in a team and someone else will be using your drawing it can be even more confusing for them.

PROBLEM 2.

If you run the AUDIT command this will create a new layer called $AUDIT-BAD-LAYER and put everything that was on the defpoints layer onto this new layer. The previously non-plotting objects will now plot as they are not on a no-plot layer anymore – see this link for more information.

SO…WHAT IS THE BEST WAY TO HANDLE THIS?

The best practise is to create your own no plot layer, or series of no plot layers, and this will ensure that you don’t have to worry about this happening. It will also make your other team members happy.

ANY QUESTIONS?

That’s all for this tip. How does your office treat the defpoints layer? Leave a comment below and let us know how your office treats the defpoints layer.

Paul Stafford

http://cadsmarter.com

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