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3D file import question

Posted: Fri Jan 24, 2014 1:03 am
by mnuser
I'm using the software Inventor 14 Auto Desk

When we export the file as a .stl file and then load the file into the printer it comes in but it is not the size we designed it while in the CAD software. We print it and it is really small. We can not figure out what we are doing wrong. We have it just like we need it in the CAD software.

Make sense? If so, any ideas?

Re: 3D file import question

Posted: Fri Jan 24, 2014 5:14 am
by doraemon
The software autoscales if it detects the model is too big (or too small). Try scaling the part up by 25.4 (should be an option in the drop-down list for Scale).

Re: 3D file import question

Posted: Fri Jan 24, 2014 6:12 am
by roller
Yes, to expand on that it thinks your inches are millimeters. If you export your models in mm this is the most reliable with 3D printer slicers and lets face it, you need to get used to what the rest of the world uses as some point ;) Now usually the software will scale down if the model is very big and it might be that you left an outlier point of line in the model when you exported making it look a lot bigger than it should ... or it could the scaling units in the STL is wrong ... or it could be the Up software just being dumb.

The Up software also makes a simialr assumption for very small STLs and scales them up 25.4 times thinking your mm are actually inches.

Re: 3D file import question

Posted: Fri Jan 24, 2014 9:01 pm
by mnuser
Hey thanks for the info. That worked perfectly. When exporting it I converted it to MM and it came in spot on!

Re: 3D file import question

Posted: Sat Jan 25, 2014 1:25 am
by DrewPetitclerc
mnuser wrote:Hey thanks for the info. That worked perfectly. When exporting it I converted it to MM and it came in spot on!
1 is not always one that you meant. :ugeek: