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General Discussion / Re: From Moi to Nvil and back how to stay accurate
« Last post by Noobnvil on January 08, 2026, 02:28:34 am »I use the import obj script then subd in Moi. so I can boolean fast and accurate.
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92
General Discussion / Re: From Moi to Nvil and back how to stay accurate
« Last post by kevjon on January 08, 2026, 02:22:20 am »You cannot import mesh data from NVil into MoI v4 (except when using the subd tool in MoI)
If use MoI > subd > create tool to import the obj data it will convert it to a subd nurbs surface which will change its size slightly as the subd algorithm tries to round off all the edges of the cylinder.
If use MoI > subd > create tool to import the obj data it will convert it to a subd nurbs surface which will change its size slightly as the subd algorithm tries to round off all the edges of the cylinder.
93
General Discussion / Re: From Moi to Nvil and back how to stay accurate
« Last post by Noobnvil on January 08, 2026, 02:08:28 am »Can you test this 50cm cyl. Moi Nvil and back to Moi?
Tnx!
Tnx!
94
General Discussion / Re: From Moi to Nvil and back how to stay accurate
« Last post by kevjon on January 08, 2026, 01:46:35 am »I just did another test.
I set MoI to meters
I created a 0.1m x 0.1m x 0.1m cube in MoI.
Exported the cube from MoI to obj
I set NVil to meters in preferences
Merge Scene > obj
I set import scale to 1
I used the measure tool > measure between snap points
It comes into NVil perfectly to size at 0.1m
If you set NVil preferences to cm and import scale to 1 it comes in perfectly to size also.
I tested your wheels 1302.obj file
When NVil is set to meters and they are imported at 1 scale
Each wheel is 43.7721m diameter x 26.9996m high
I set MoI to meters
I created a 0.1m x 0.1m x 0.1m cube in MoI.
Exported the cube from MoI to obj
I set NVil to meters in preferences
Merge Scene > obj
I set import scale to 1
I used the measure tool > measure between snap points
It comes into NVil perfectly to size at 0.1m
If you set NVil preferences to cm and import scale to 1 it comes in perfectly to size also.
I tested your wheels 1302.obj file
When NVil is set to meters and they are imported at 1 scale
Each wheel is 43.7721m diameter x 26.9996m high
95
General Discussion / Re: From Moi to Nvil and back how to stay accurate
« Last post by Noobnvil on January 08, 2026, 01:38:51 am »Ok I think I got it.
In Nvil import scaling is set at 0.01 but no matter what I did on the export side it will not come correct in Moi3d.
But I found a setting in obj import and changed to 0.909 instead of 1 and now it seems correct.
but there is something weird I made a cylinder 50cm diameter send to Nvil...it seems in Nvil it is 46cm
save open in Moi it is 14cm :/
Now it would not matter whatever the size I have in Nvil...but what matter is from Moi to Nvil and back it should be the correct size. anyone knows if https://www.youtube.com/watch?v=vMFqGodNlno
Luka Mivsek is a member of this forum...he might be able to help out..since he is going Nvil, Moi and back
I use these to make stuff on cnc machines so I need the dimensions to be right.
I am using open scene and save scene as.
Is this the correct way to deal with obj files?
Tnx!
In Nvil import scaling is set at 0.01 but no matter what I did on the export side it will not come correct in Moi3d.
But I found a setting in obj import and changed to 0.909 instead of 1 and now it seems correct.
but there is something weird I made a cylinder 50cm diameter send to Nvil...it seems in Nvil it is 46cm
save open in Moi it is 14cm :/
Now it would not matter whatever the size I have in Nvil...but what matter is from Moi to Nvil and back it should be the correct size. anyone knows if https://www.youtube.com/watch?v=vMFqGodNlno
Luka Mivsek is a member of this forum...he might be able to help out..since he is going Nvil, Moi and back
I use these to make stuff on cnc machines so I need the dimensions to be right.
I am using open scene and save scene as.
Is this the correct way to deal with obj files?
Tnx!
96
General Discussion / Re: From Moi to Nvil and back how to stay accurate
« Last post by IStonia on January 08, 2026, 12:54:23 am »I don't have Moi, so can't answer that.
Are there scaling options in Moi's import/export?
Are there scaling options in Moi's import/export?
97
General Discussion / Re: From Moi to Nvil and back how to stay accurate
« Last post by Noobnvil on January 07, 2026, 11:35:23 pm »Ok so I made a cube 10x10x10cm In Moi export as obj re import in Moi and the dimensions are right.
I imported it in Nvil in the file import options I set the import to scale at 0.1 import /export is set at 1.0 the cube and export open with Moi
and the cube is now 11x11x11cm.
So it is close but is this the way to do it?
I have seen the video of the design rage robot where he imports back and forward and seems to go 1on1 scale.
Am I missing something?
Tnx!
I imported it in Nvil in the file import options I set the import to scale at 0.1 import /export is set at 1.0 the cube and export open with Moi
and the cube is now 11x11x11cm.
So it is close but is this the way to do it?
I have seen the video of the design rage robot where he imports back and forward and seems to go 1on1 scale.
Am I missing something?
Tnx!
98
General Discussion / Re: From Moi to Nvil and back how to stay accurate
« Last post by IStonia on January 07, 2026, 08:12:26 pm »There are obj import/export scale options, Edit > Options > File Format Options > ...
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General Discussion / Re: From Moi to Nvil and back how to stay accurate
« Last post by Noobnvil on January 07, 2026, 01:21:20 pm »Attached obj
100
General Discussion / Re: From Moi to Nvil and back how to stay accurate
« Last post by Noobnvil on January 07, 2026, 01:20:24 pm »Ok I am getting somewhere.
In Moi I am drawing in cm. In Nvil I set it in cm.
When I do the viewport fit I can see it ...but I am confused if it is way too big or way to small as I cannot see the grid.
so I send it back to Moi and it is 10 times smaller.
so I either have an export or import problem.
Attached is the object at size in obj.
Tnx!
In Moi I am drawing in cm. In Nvil I set it in cm.
When I do the viewport fit I can see it ...but I am confused if it is way too big or way to small as I cannot see the grid.
so I send it back to Moi and it is 10 times smaller.
so I either have an export or import problem.
Attached is the object at size in obj.
Tnx!