whats the deal with the Ztool shrinking on OBJ export?
this is killing our entire production.
is there a way to fix this that doesnt require a “workaround”
but a solid dependable procedure?
Tool > Export > Scale
is this set to 1?
if not, set it to 1
if that isn’t the case, the only other thing i can think of is that when you first exported the .obj from the initial application you scaled down your object with the other application’s exporter without knowing it before importing into ZBrush.
If i had a dollar for every time i have successfully exported obj files from and to zbrush I no lie would buy out the earth cash and have everyone wear ballerina dresses.
the scale changes on its own. even if i set it to 1 it does its own thing.
hmm… i import and export from blender to zbrush all of the time with no issues. i think it’s your other app…
for instance, i’ve gotten scale issues with importing .obj’s into Poser that were exported from both blender and zbrush, so the scale issue would seem to exist within the Poser .obj importer. Poser does some crazy things with mesh scale anyway…
one thing that might suggest this as user error is that this topic is in the wrong thread…
You’re not alone man. We’ve run into this gem of a bug more than once during production, and it’s not pretty. The cause is still an unknown as far as I know, it’s not something that happens at export, but rather your entire ztool has now been rescaled by zbrush. Did you group split any of your subtools? Cesar’s been troubleshooting it and that was one suspect operation that may cause zbrush to rescale everything
this is terrible we have to go back to an older version or use another application.
I am having scaling issues as well, throwing a wrench in my conversion process from ZBrush to Second Life. My workflow does usually involve group splitting subtools. I’ll do a bit of tinkering and see if that command triggers my scale problem.
anyone?
seriously no one has a real answer to this question?
:td:
I would suggest a working example to recreate the issue may be helpful. Otherwise, as pointed out, we can’t tell if it is Zbrush or other tools
this is something that has been mentioned before by MANY other people, alot of those people I would trust know what they are doing enough to know that they have traced the error to zbrush, as mentioned above. im just surprised this has not been on the top priority list for pixologic, releasing a patch asap… as cool as uvmaster is , not having uvmaster is not the showstopper that
the scaling issue has become for our entire studio.
Ya I just started a new thread about this issue, didnt catch this thread first time threw when I was looking for a fix.
At any rate, our studio is having the same problem, it’s really starting to tick me off. Like why would you mess with the import and export features anyway, they were fine the way they were. Like they say, “Don’t fix it, if it’s not broken”.
Oh ya and one more thing. This is a Zbrush problem not a external app problem, I’ve been using Zbrush for a long time now, with the same work flow, and nvr had I come across this problem. It’s weird too, because it only does it on certain sub tools that I export, not all of them.
Hope you guys get this fixed soon, like Miguel said, it should be priority number one. Importing and Exporting is super important, our production depends on it alot.
This is absolutely a zbrush problem. From my understanding, it was introduced with the GoZ code and Pixologic themselves are having trouble repeating it and developing a fix. I think it’s kinda astounding that they would release their program with such a showstopping bug. The whole point of these sculpting programs is that obj goes in, obj comes out, with the same point order and same scale and topology.
It’s enough of a headache when it changes the scale AND pivot of your non-animated models, but it’s truly a monstrosity when you are working on a character that’s been rigged. You have to rescale and realign your model trying to match its vertex positions EXACTLY, its no easy feat and can require a butt load of tinkering and frustration, and can create a snowballing effect of problems when you have to propogate changes through blendshapes and such. Not to mention you’ve gotta fix the scale of your ztool as well, which is a lot of fun if you have many subtools as well.
Sorry, I just ran into this bug AGAIN and it’s getting annoying
im not sure if this is the same problem or not but if i export an ma file from maya and take it to zbrush and then back again the model gets huge and moves a bit ans rotates 90 degress?
as i say dont know if this is the same problem but i could really do with some sort solution.
I continue to have this issue. I imported about 15 objs as subtools from maya. Each one placed in the appropriate location in zbrush. I worked each subtool and saved about 7 ztools. The I decided to bring in one of the original objs from before I had done any sculpting on it and found that it was huge compared to my ztool. My ztool had shrunk by 900%. I had exported nothing. I’ve only been working on the ztool. It shrank on its own. I never saw these scale issues before 3.5.
More often than not zbrush applies some obscure scale values to imported objs. Like 1.35 or 9.0053535. Also random values to the x,y,z offset.
I’m sure we all would love to see less gimmicks like uvmaster and more solid operation.
Yeah this is a horrible bug… has anyone heard from pixologic regarding this? it would be nice to know if they are on top of this or if they are even aware of the problem.
it has been addressed but never solved…basically “deal with it”
Hey pooch,
one thing that has worked for me in the past, although not with 100% success rates every time, is to open up the earliest version of the .ztl you have. Append the newest version of the ztl to that original one with the original subtool at the top of the subtool palette selected.
The newly appended subtool should inherit the correct scale/offset etc.
OR
If you just change the numbers down in the Export tab back to the correct numbers that are found on the original tool then export and re-import the correct scale and offset will be set.
Believe me, this is basically a show stopping bug that will destroy your production and has bitten me in the @ss on SEVERAL occasions now. Sometimes the aforementioned fix does NOT work. I would much rather NOT have GoZ than deal with this honestly.
I’m actually dealing with this BS right now, hence the reason I stumbled across your thread man. Apparently, this mind blowing bug is STILL an issue, even in v4. 
Wayniac!!! Thats genius dude!!! I can’t thank you enought for this tip!!
I think along with this tip, i have finally conquered all of Zbrush’s import/export issues!
Thanks again!