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Make sure the “Uniform Scale” function at the bottom of the dialog is locked, then enter “25.4” in the “Scale X” box and hit enter. dimensions in STL files to be given in mm. After importing the object to CURA and seeing that it is very small, click the object and choose the “Scale” option in Cura.When Cura (or something else which expects the STL units to be mm) reads the file, it will then be correctly interpreted as 254mm in height. In the example above, if you export a 10" high object and tell the CAD program performing the export to us millimeters, then it will contain references saying the object is “254 units” high, because 10in is 254mm. If you are doing the export, it is best (at least for the 3D printing world) to tell the CAD program to base the STL file on millimeters, because this is the measurement most often expected.Yes, that’s the correct conversion factor (1 inch 24.5 mm).
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also you need to check your LTSCALE for hidden lines. Pretty sure if you scale the part 2540.00 it will be freedom units to metric. Since there are 25.4 millimeters in one inch then you can also use SCALE command with needed value. standard SolidWorks measurement units, specifically from inches to millimeters. then insert your drawing ( Inch ) to the new drawing ( mm ). Then I went to scale, and scaled the entire doc using the mm to in unit. Tell us about your attempts try to open a new dwg then change your Insertion Scale from UNITS command. So there are two common “fixes” to this problem. Hi, > Can I get help with this dwg file has tried but fails. It will see the 10 units, assume they are millimeters, and – viola – you have a 10mm object on screen instead of a 10" object. To do this, type Scale at the Command Window or select it from the Modify menu. Now let’s say you import that STL into a program, like CURA, that assumes STL files to be based on millimeters. As we all know, 1 Inch is equal to 25.4mm, so to get the square to the correct size, all we do is use the Scale command to scale the entities by 25.4. The STL will contain references saying the object is “10 units” tall. So let’s say you create an object that is 10" high, then export it to STL and tell the program to use inches as the STL unit. The actual size of your object is then expressed as the appropriate number of units in the STL. When exporting an STL, most CAD programs ask (or it is buried in options somewhere) what unit value the STL should be based upon. When creating a STL file, the CAD program typically knows the actual size of your object because you have designed with absolute measurements. There is no specification within the STL that says whether each unit is an inch, a millimeter, a meter, or a mile. The dimensions inside STL files are expressed in “units”.
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Cura assumes 1unit=1mm, so between the export/import process your object is effectively scaled down by a factor of 1/25.4, making it appear really small. Most likely the STL file was exported using 1unit=1inch.