M1 Modelspace / Paperspace

Once an understanding of the benefits of using paper space are understood it would be very hard to go back to using only model space (which is usually the beginners starting point).

The combination of having viewports that have their layer settings pre-determined by freezing undesired layers, (for a particular printed output view i.e. site plan, electrical plan etc.) along with the ability to save these in a template file (.dwt) makes for rapid drawing creation. Changing of layer settings is very much reduced.

Specific views along with their layer settings which can be saved in a template file might for example be site plan, demolition plan etc. etc. all the way through your usual set including any usual isometric or perspective views.

A lot of work can then be done from paper space by activating the viewports to floating model space mode.

Instead of having viewports on a separate layer and turning that layer off when you go to print, you may wish to have the viewports on the defpoints layer with has the effect of rendering them invisible to the printer.

As in model space, named views can be saved so they can be quickly viewed.

Remember when opening a drawing to tick the little box "select initial view" to quickly navigate to the part of the drawing you would like displayed first.

Instead of risking slowing the computer down by having to many viewports active you may wish to change the "maxactvp" number to vary the amount of viewports able to be seen and re-generated.

Line types can be made to "look right" that is scaled in proportion to the viewport scale, with the "psltscale" command.

Besides making a back-up of the model space objects it is good practice to

make a block (.dwg) every so often, of all of paper space. Should you have an inaccessible file, model space can often be recovered by inserting the problem file (as a block) into a new (blank) drawing. Problem is that model space can insert properly but paper space is lost. Therefore make a (.dwg) block of paper space.

What to put where?


It is possible to dimension a model space (full scale) object from paper space but this is not recommended as the dimensions are not associative.

To dimension in model space and have the dimension appearing correctly in paper space separate dimension styles are created. Layers would also need to be provided that relate to differently dimensioned parts of the structure so that the y can be selected.

Text etc.

1. Text that relates to the drawing sheet only.

Title block, client, drawing number, view headings, legends, some tables

can all go onto paperspace (1:1)

North arrows are best here too (but you may need another north reference in model space).

2. All other text.

Separate by layers as appropriate and keep these in model space.

Text heights are scaled relative to the viewport scale, i.e. If you want

text to appear 2 mm high in a 1:100 scaled paperspace viewport then the

text should be created in model space at 200 mm high.

(Refer also to separate hints document T1)


1998 Copyright Allan E Johanson