Posted: 7/16/2026 7:36:13 AM EDT
[Last Edit: Striker][Edited]
 <- rookieWhen I export a model in the dimensions I want and import it in to my bambu slicer the size is huge compared to what I exported if it's a big model. It doesn't seem to do this with smaller files. This is what I exported. correct dimensions  This is what I get when I import it. I'm guessing it's something I'm not doing or doing wrong.  |
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  Change units to MM, then at the top right click and save as mesh is what I always do. |
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tks guys. just down loaded files for dimple dies and when I imported one for a test print it's huge and they have to be exact in size. |
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Originally Posted By Blob: CAD and slicer units do not match. You can scale the model down by 25.4 in the slicer, re export it with the correct units, change the units in the slicer preferences, or skip all that and export as 3mf or stp instead of stl. what else do I need to mess with? :) |
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Originally Posted By Striker: I did export it in 3mf and it was in mesh format and my slicer is set to mm's not inches. what else do I need to mess with? :) Hm I could've sworn Fusion was able to export as .3mf, guess not. When you save as mesh, just make sure this unit matches whatever unit your slicer is set to. Attached File When you save the file from the slicer then it will be a .3mf which is a format that contains more information than just the mesh model. |
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I can export in 3mf. I always do. When I imported it into my slicer it was in mesh format. My slicer is set tm mm. |
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Originally Posted By Rat_Patrol: Slicer should open 3mf and import the units just fine. It's the die part of a dimple die set and it's suppose to be a 1" hole. I got the dimensions for the center hole by drawing a line edge to edge. It won't let me use the dimension tool and it comes out to 10"  So I'm off to contact the folks that modeled it. One thing I noticed is it's a hybrid design that I can switch to either a part or assembly. I tried both and again it won't let me use the dimension tool in either format. |
To say that you are on thin ice would be a vastly optimistic view of your current situation. The ice has melted. You are being supported by the surface tension of water.
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Originally Posted By nikdfish: If it is off by a factor of 10, tell the slicer to scale it down to 1/10. That really sounds like it was built with mm dimensions in mind but actually had cm as the unit of measurement when originally drawn up. Stand by. |
To say that you are on thin ice would be a vastly optimistic view of your current situation. The ice has melted. You are being supported by the surface tension of water.
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Originally Posted By Blob: If you know what a certain feature size is supposed to be, you can use the measure tool and click the edit button to scale the model to exactly the size you need. Now to print the other half and see if it actually works |
To say that you are on thin ice would be a vastly optimistic view of your current situation. The ice has melted. You are being supported by the surface tension of water.
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Originally Posted By Striker: it measured out to the right size. Now to print the other half and see if it actually works No, what I mean is When you import a model and it comes in way off scale, let's say it's supposed to have a 12mm hole in it, use the measure tool in the slicer to check the diameter of the hole. It might pop up as 304.8mm for example. Insted of doing math to figure out the correct scaling factor, just click the button next to the measurement that says "edit to scale" and then just type in 12mm and the whole model will automatically scale to the appropriate size. |
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Originally Posted By Blob: No, what I mean is When you import a model and it comes in way off scale, let's say it's supposed to have a 12mm hole in it, use the measure tool in the slicer to check the diameter of the hole. It might pop up as 304.8mm for example. Insted of doing math to figure out the correct scaling factor, just click the button next to the measurement that says "edit to scale" and then just type in 12mm and the whole model will automatically scale to the appropriate size. I'll try it again when I import another one. |
To say that you are on thin ice would be a vastly optimistic view of your current situation. The ice has melted. You are being supported by the surface tension of water.