Hi. To model some pipework, I scaled up a section of the model and then scaled back down again. Strangely some of the scaled up pipework remains when I open an exported dwg in Rhino. These parts of the pipe slow Rhino down and refuse to be deleted.
The scaled up pipework can be seen on the left of the attached image. Imagine parts of a zig zagging pipe. Is this a common issue? Is there a remedy? Many thanks!
It’s not a common thing but I’ve seen it before in other user’s models. Usually it can be tied back to mismanagement of scaled objects.
Share the ,skp file so we can see what you have modeled exactly.
FWIW, you could simplify things and avoid the need to scale up and back down by making a copy of the component off to one side and scaling it up to make edits. When finished, close the large copy of the component and delete it. This leaves the original in place where you need it to be. Faster and less prone to inducing errors in your model.
Thanks DaveR. This is the model. It is a simple steeldeck platform.
Steel Deck 002.skp (4.0 MB)
OK. So it is indeed what I’ve seen before. The group’s definition scale doesn’t match the size at which its displayed in the model. Notice that Reset Scale is available in the context menu.
Probably the simplest way to fix it in this model would be to explode each group one at a time and remake it. I did that for the selected group. Notice Reset Scale is now grayed out because the scale is set correctly for the size of the object in the model.
If you are going to continue using same process in the future, open the group for editing and scale the geometry up before making the edits. Then scale the geometry back down when you are finished. Don’t scale the closed group.
Much appreciated. Very good to know. So scaling needs to be done to a basic geometry - not groups?
If you need to keep the scale correct.
Thanks
Hi DaveR. I tried the component method and I still get the issue when exporting the dwg file. Do you think it is to do with the pipe along path extension? Is there perhaps a better way of creating the pipe? I couldn’t get follow me to work. Thanks again.
After going back to the original component, right click on it and choose Scale Definition. That will update it.
Not specifically.
What happened when you used Follow Me? My guess is that you’ve been using too many segments for the arcs and circles. Do you really need a tube with such a small lumen?
This does seem like an excessive number of segments in the arcs for these bends.
The default 12 sided arcs ought to be just fine for this.
Ah. I’ve been using the fredospline tool which has a lot of of segments. I’ll give follow me another go with a better curve in place.
This just uses a default 12-sided arc for the bends and the native Follow Me.
Thanks DaveR. I have just done the smae and it has worked. I think that a combination of Fredospline and pipe along path may have led to the problem.
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