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Export STL default tolerances

Gears Honored Contributor Gears Honored Contributor
Gears Honored Contributor

I'm looking for a way to change the default tolerances when exporting an STL file (triangle tolerance and adjacency tolerance). I looked through the customer defaults and part preferences, but didn't find anything obvious. Is there a setting that controls these tolerance values? If so, where is it?

6 REPLIES

Re: Export STL default tolerances

Solution Partner Phenom Solution Partner Phenom
Solution Partner Phenom

@cowski1 Check this article on the Knowledge Bases that i have made.

 

https://community.plm.automation.siemens.com/t5/NX-Design-Knowledge-Base/3D-Printing-NX-11-STL-Expor...

 

The only thing that i experience is that you can set the defaults but the export still comes op with the ootb default of the angular Tolerance.

 

Also i don't know why siemens has the 18 degree angulare tolerence default on because you can see it in your print that the round shape is facetted.


Ruud van den Brand
Pre-sales NX CAD
cards PLM Solutions

Re: Export STL default tolerances

Phenom
Phenom

As well as @cowski1 I cannot modify the STL tolerance default values in customer defaults, also I don't understand the corrispondence-matching between the 'old' and the 'new' tolerance values.

 

Cesare

 

stl75.jpg

Re: Export STL default tolerances

Solution Partner Phenom Solution Partner Phenom
Solution Partner Phenom

I have just test some things.

The angular tolerance looks that it doesn't do much.

 

When changing the chordal tolerenance you see the same thing changing in your export as by using the traingle tolerance in the NX10 export dialog.


Ruud van den Brand
Pre-sales NX CAD
cards PLM Solutions

Re: Export STL default tolerances

Gears Honored Contributor Gears Honored Contributor
Gears Honored Contributor

I should mention that I'm still currently using NX 9, so I'm looking at the "old tolerances" as mentioned by @Cesare. The tolerances seem to be part specific; if I change the value and perform an export, the same values will be used for the next export. I can't find a setting to control the initial default value. I guess that I'll need to update the template files to use the new value and hope the users make the proper change when exporting out an exisiting model.

Re: Export STL default tolerances

Siemens Experimenter Siemens Experimenter
Siemens Experimenter

looks like there is an PR for this behaviour:9047785

 

GTAC: Siemens PLM Software

Re: Export STL default tolerances

Solution Partner Phenom Solution Partner Phenom
Solution Partner Phenom

There is also an setting issue when uniting Solid bodies with convergent bodies.

If you have a cylindrical face it gets a very big angular tolerance when uniting to a convergent body.


Ruud van den Brand
Pre-sales NX CAD
cards PLM Solutions