Drawing of Different Scales.

I've never understood why there is any need to scale CAD drawings.
Surely the whole point of a computer is that it can crunch the numbers regardless of the physical size they represent.
There should only ever be a need to scale it for printing off a hard copy (you can zoom in or out on a display).
Or am I thinking too far out of the box?
Del

That maybe just what he got. Sent to him so that he could print it out.

What you think modify both to 1:1 make the combination. And work with that.

Big Questions for ya: #1. Are these AutoCAD drawings hard copies? #2. Also, are these drawings in your computer, and are they in either PAPER SPACE or MODEL SPACE?

You do know that the "scale" command exists, do you? Do a search in the AutoCAD "Help" section.....

If you scale your CAD drawing and look at it on a large screen will it be the same as on a small screen? Also if you then print it off on A4 paper is it the same as A3? Surely if you have a CAD drawing the actual dimensions should be there and no scaling is required.

How have you come to be in this situation ?

Does the resulting morph need to be something that you can work on further with the software that you have ?

Are the drawings going to be overlays, or adjacent ?

Have you searched whatever help fascility exists in AUTOCAD ?

Explain this a little more. I can't help you, but others may take the time to do so with a little more detail. When explaining a problem, it's very easy to leave out detail that is 'obvious' to yourself but not to others. 'If you can't find the solution, it's because you don't understand the problem'. That is a bit cliched, but worth bearing in mind.

As with many threads on CR4, my interest here is to see if a solution can be found. One day I might find myself pondering a similar problem. Somebody will 'fixya' (play on language and name of a popular website).

All I can offer is to look right of screen for "Search all of CR4", enter a parameter such as AUTOCAD and see what you find.

AutoDesk has excellent on-line help.

Services & Support - Autodesk

Wow, I'm really surprised at some of the comments. It's like you don't understand the reason for having different scales. It has to do with sheet size for printing. A standard A0 drawing format is roughly 48" x 33". If you're designing a toaster, you can fit the various views of that toaster inside the format at full scale 1:1. If your designing a bridge well then...you need to scale your views to fit inside the format!! Get it?

Mr. Ravi you need to first change the scale of one drawing to match the other one. You can then copy the view from one drawing to the other. This way your geometry will be correct. I'm assuming this was your issue and not how to change the scale of a view.

"Wow, I'm really surprised at some of the comments. It's like you don't understand the reason for having different scales."

In CAD programs, the usual convention is that you draw any object as 1:1 Full Scale. i.e. if something is 1 meter then you draw an object that is 1000mm (1M).

Scales are then used to (as you stated) to "Print" the drawing or to create a "Layout", where you may want to display a large object (say a car), as well as having an inset of a small pert (a door handle). To be able see the detail of both you would set each part of the layout at different scales to achieve this.

To answer the original question...

You could open one drawing, then insert a "block" (i.e. the other .dwg file). When you insert a block you get to specify the scale at which to insert. you would need to work out the fractoin of the original to the 2nd dwg..

"In CAD programs, the usual convention is that you draw any object as 1:1 Full Scale. i.e. if something is 1 meter then you draw an object that is 1000mm (1M)."

I'm somewhat familiar with CAD programs. I was refering to "VIEW" scaling and not "GEOMETRY" scaling. There's a big difference. I can't imagine anyone drawing or modeling a 1000mm part at 500mm just because they want to show it half scale (1:2) on a drawing. That's insane. Nobody does that..or at least nobody should! All CAD packages have view scaling capability to allow the user to fit their views inside the sheet format borders. The "GEOMETRY" in those scaled views is always 1:1.