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jinghui
29th Feb 2008, 09:59 am
Hi guys!
I need some help on a scale problem. I did read many of the past posts, but still have problem. so... Well, i will describe what is going on.

I got a drawing with scale information 1:500. What I did it to scale it with a scale factor 0.002. The distance of 31490 then changes into 62,98. This is obvious wrong.

What should I do to change this into 1:! milimeters?

I am hoping for quick answers as i need to fix this very soon. Thank you!

Dipali
29th Feb 2008, 10:06 am
Hi guys!
I need some help on a scale problem. I did read many of the past posts, but still have problem. so... Well, i will describe what is going on.

I got a drawing with scale information 1:500. What I did it to scale it with a scale factor 0.002. The distance of 31490 then changes into 62,98. This is obvious wrong.

What should I do to change this into 1:! milimeters?

I am hoping for quick answers as i need to fix this very soon. Thank you!

Can u clarify a bit more.
1. R u doing this in papaercsapce? -(normally we do 1: 1 drawing in model space & set up the scale in viewport in paper sapce.)
2. the distance change from 31490 to 6,98 is appering in distance command or is it the dimension. :?
3. also check the units

Hedgehog
29th Feb 2008, 10:16 am
OK... 31490 * .002 = 62.98 therefore what you have done is take your model from 1:1, which is what it should be, down to 1:500... not really what you want to do as a model should always be represented 1:1 usually using mm as the base unit.

To view/present/print this model you should go into paperspace & create a viewport (like a window onto the model) to the correct scale (eg. 1:500) & print this off (again at 1:1)... sounds a bit confusing but it's very logical once you get used to it.

Dipali
29th Feb 2008, 10:25 am
OK... 31490 * .002 = 62.98 therefore what you have done is take your model from 1:1, which is what it should be, down to 1:500... not really what you want to do as a model should always be represented 1:1 usually using mm as the base unit.

To view/present/print this model you should go into paperspace & create a viewport (like a window onto the model) to the correct scale (eg. 1:500) & print this off (again at 1:1)... sounds a bit confusing but it's very logical once you get used to it.

For how to set up viewport in papersapce, refer to my reply yesturday in this thread
:)

jinghui
29th Feb 2008, 10:43 am
Can u clarify a bit more.
1. R u doing this in papaercsapce? -(normally we do 1: 1 drawing in model space & set up the scale in viewport in paper sapce.)
2. the distance change from 31490 to 6,98 is appering in distance command or is it the dimension. :?
3. also check the units

Hi,

1. No, I am in model. I got this drawing from our customer which is notified as 1:500 in the model space. I want to draw 1:1 in model space, so I guess i have to rescale the original drawing to 1:1 some how. What i did is to scale it with scale factor 0.002.
2. that is the dimension. sorry for the cofusion.
3. what do you mean by check the units?

P.S. Does this has anything to do with Measurement Units? As I checked it is 500 on measurement units.

Tiger
29th Feb 2008, 10:48 am
if it's drawn in 1:500 in Model Space - shouldn't you just scale it UP with a factor of 500 to get it to 1:1?

Hedgehog
29th Feb 2008, 10:55 am
You shouldn't have scaled it by 0.002!... either undo your scale or re-scale the whole model up by 500 as Tiger says... then you'll be drawing at 1:1

OK... 31490 * .002 = 62.98 therefore what you have done is take your model from 1:1, which is what it should be, down to 1:500... not really what you want to do as a model should always be represented 1:1 usually using mm as the base unit.

Dipali
29th Feb 2008, 10:56 am
Hi,

1. No, I am in model. I got this drawing from our customer which is notified as 1:500 in the model space. I want to draw 1:1 in model space, so I guess i have to rescale the original drawing to 1:1 some how. What i did is to scale it with scale factor 0.002.
2. that is the dimension. sorry for the cofusion.
3. what do you mean by check the units?

P.S. Does this has anything to do with Measurement Units? As I checked it is 500 on measurement units.

Your mesurment unit appers to be ok(mm)

you should never scale in model space.

Ok so first thing u need to do this is scale it to make it 1:1 in model space in mm.
than u go to layout & set the viewport as mentioned in other thread.

to dimension in paper space, u need to specify relative scale factor under mesurement units under primary units in your dimension style. also tick apply to layout dim only. that way it iwll dimension correctly in model space also.

jinghui
29th Feb 2008, 11:05 am
Hi again,

If i do scale it UP with 500, i.e 31490 *500= 15745000. This cant be right. As we are talking about a warehouse, which should be maybe 15 meters...( I dont have the real world measurement...) but i guess anyway it should not be 15745 meters.

Alan Cullen
29th Feb 2008, 11:13 am
Should you scale the original 1:500 by a factor of 0.5 to get to the units (m) you want?

jinghui
29th Feb 2008, 11:16 am
Should you scale the original 1:500 by a factor of 0.5 to get to the units (m) you want?

Doesnt seem right either. How do you come to 0.5?

Alan Cullen
29th Feb 2008, 11:27 am
500/1000 = 0.5 That's if its in metres. If it's millimetres, then rescale again by 1000. (I think. Brain is a bit numbed at the moment....rum night). :lol:

Dipali
29th Feb 2008, 11:28 am
I think u should start over from begining.
If you know any of the actual size on the drawing. you can use reference option for scale
for example if you know any particular line should be say 600 mm draw line of 600 mm over it & scale relatively.

Hedgehog
29th Feb 2008, 11:28 am
Don't scale it by anything... 31490 should equal 31490 real world units in the model... or am I going mad!

Dipali
29th Feb 2008, 11:32 am
no hedge.
his original drawing seems in actual size to me also.

& btw i am a senior member now :wink:

Dipali
29th Feb 2008, 11:36 am
(I think. Brain is a bit numbed at the moment....rum night). :lol:

ok I read this today in one of the article.
:lol:
The researchers have recommended that readers should seek a concept known as BLISS -- Body-based pleasure, Laughter, Involvement, Satisfaction and Sex -- which all enable the mind to perform well. :wink:

I think i should take this to chat forum now if u have any comments.

Tiger
29th Feb 2008, 12:15 pm
Hi again,

If i do scale it UP with 500, i.e 31490 *500= 15745000. This cant be right. As we are talking about a warehouse, which should be maybe 15 meters...( I dont have the real world measurement...) but i guess anyway it should not be 15745 meters.

i would say that is right! it all depends on what unit you want to draw in - 15 745 000 mikrometers is 15,745 meters right? and that's close to the 15meters that you guesstimated.

So if you want to draw in millimeters, scale the whole thing down with 1/1000 and you will end up with a warehouse in millimeters.

jinghui
29th Feb 2008, 12:37 pm
Hi,

i think i finally got it correct now. but not sure how i made it....i will come back with a summerize if i find out what is the problem. Thanks for everyone! have a nice weekend :)