How to scale in autoCAD

[Anonymous]

Hi There,

I have been using CAD for 7 months now and I cannot work out how to scale my drawings! 

I have watched multiple videos and looked on the knowledge network for answers but nothing works for me.

I would like to know how to scale my drawing to a specific scale. For example, how would i make it so layout 1 is on an A1 page and at a scale of 1:500 then layout 2 is on an A3 page but still to a 1:500 scale. 

Even just knowing how to scale my drawing in general would be amazing.

Thank you,

Aaron

[imadHabash]

Hi,

• your layout VP rectangle size must be at the same units of your model units . 
• your paper sheet will be known depending on your model drawing size . 

[Kent1Cooper]

You need not only Layouts, but Viewports within them, through which to look into Model space.  Viewports are where scaling is set.  Select a Viewport perimeter, and in Properties, pull down the list of scales under Standard scale and pick one.

[Moshe-A]

@Anonymous  hi,

1:500 scale, i assume you are working in metric units?! 

A1 sheet size is 840mm X 594mm

A3 sheet size is 420mm x 297mm

lets say your drawing in model space is in meters:

draw a rectangle from 0,0 to 420,297 + zoom all (this is for the A1 for 500 scale)

and another rectangle from 0,0 to 210,148.5 (this for the A3 for 500 scale)

set them to green color.

the equation here is:  xxx/1000 * 500  (in this case turn 1/2 of xxx)

switch to layout1 delete the existing viewport and draw a rectangle from 0,0 to 0.840,0.594  + zoom all

the measures here is in meters 1:1. invoke pagesetup and select A1 sheet and specify a plot scale ratio 1000=1

(meaning 1000mm = 1meter and this is 1:1 in meters)

set it to red color.

create a new viewport inside shorter by 0.01 (which is 10mm less) set it to blue color.

enter inside the viewport (double click), invoke zoom and key-in 1/500xp

switch to layout2 and draw a rectangle from 0,0 to 0.420,0.297   + zoom all

and do similar procedure.

a correct drawing sheet require a synchronized units between model space and paper space (layout)

Moshe