Help using the "-DWG" command & converting a file from Imperial to Metric.

[UNKNOWN.DESIGN.LAB]

Hi guys, 

I have an imperial template file that i want to use for a metric project. for the units conversion i am using [-DWG] command.

1/ Trying to understand the "Scale objects from other drawings upon insert" prompt. If i select yes and import an object that is 1' from an imperial drawing will it be scaled to the metric drawing as 0.304M?

2/ Trying to understand the "Scale in current drawing to reflect change in units" prompt. If i select yes and will an object that is 1' become 0.304M in my new metric drawing?

3/ How do i make the hatches reflect the new Metric standards ? 

4/ I there anything other than the:

-DWG command prompts

INSUNITS

Sheet to Metric standard sizes

Scale Paper space template to match new metric sheet

Viewport scales to metric 

Dimension style

Anything else i need to change for a proper conversion ? 

[maxim_k]

Hi Solomon,

I think you meant "-DWGUNITS" command, but not "-DWG".

I so, then:

>>>>Trying to understand the "Scale objects from other drawings upon insert" prompt. If i select yes and import an

>>>>object that is 1' from an imperial drawing will it be scaled to the metric drawing as 0.304M?

Yes, if you will select 6 (meters) in the first prompt "Unit for length" of -DWGUNITS command.

>>>>Trying to understand the "Scale in current drawing to reflect change in units" prompt. If i select yes and will

>>>>an object that is 1' become 0.304M in my new metric drawing?

Again - Yes, if you will select 6 (meters) in the first prompt "Unit for length" of -DWGUNITS command.

>>>>How do i make the hatches reflect the new Metric standards ?

All newly created hatches will reflect Metric standards (keep in mind that hatch pattern definitions in acadiso.pat file reflect metric standards if one drawing unit equal 1 mm, but not 1 meter). You need to update all existing hatches in the drawing.

>>>>>I there anything other than the:

INSUNITS - will be changed during -DWGUNITS command if you will answer "Yes" to all additional prompts:

Scale objects from other drawings upon insert? [Yes/No] :
Match INSUNITS to drawing units? [Yes/No] :

Scale objects in current drawing to reflect change in units? [Yes/No] :
Include objects in Paper Space? [Yes/No] :

Sheet to Metric standard sizes and Scale Paper space template to match new metric sheet - -DWGUNITS will scale paper size if you will answer Yes to "Include objects in Paper Space? [Yes/No] :" question

Viewport scales to metric - you need to adjust viewport scales

Dimension style - you need to create new dimension style

[UNKNOWN.DESIGN.LAB]

Hello @maxim_k , 

Thank you for continuous support.

I have created a new acadiso file for the new metric file & sheet. Settings are behaving as they should with the exception of hatches. Model space is 1:1, INSU set to meters [6].  Could you advise on the following:

1/ To your response "In acadiso.pat file reflect metric standards if one drawing unit equal 1 mm, but not 1 meter": Does that mean that on a setting of 1 drawing unit = 1 Meter [INSU set to 6] and not 1 mm i will have to be setting my hatch scale to 0.01 with each new hatch? 

2/ I am seeing ANSI layers and ISO layers as i have copy/pasted drawings i had in my Imperial file's model space to this metric file's model space. Can i purge all layers in the newly created metric file and reload only ISO layers ?

3/ How can i update all existing hatches in the drawing in response your comment below? 

All newly created hatches will reflect Metric standards (keep in mind that hatch pattern definitions in acadiso.pat file reflect metric standards if one drawing unit equal 1 mm, but not 1 meter). You need to update all existing hatches in the drawing.

 In good health. 

[maxim_k · Accepted solution]

I newer use drawing setup when 1 AutoCAD unit = 1 meter, but always use 1 unit=1 mm. And this is common practice for architectural drawings.

1/ Actually - yes, but I in fact hatch scale depends on your standards (or standards of your company)
2/ Yes, you can purge all ISO layers, if they are not used in the drawing. But again - it all depends on your standards.
3/ See #1

[UNKNOWN.DESIGN.LAB]

Got it. Appreciated @maxim_k