I'm using a tube object. I'm trying to understand and have the correct wall thickness. I'd like it to be 2mm. I have the wall thickness set to .25, but I don't really understand what that means in terms of millimeters.
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7 comments
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Wayne Losey Snaga,
The wall thickness is a measured in the same increments as listed in your grid properties panel on the bottom right of your editor window.
Setting the wall thickness at 2 will give you a 2mm wall thickness. Setting it to .25 make it 1/4 of a mm.
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Cleared Actually, that isn't exactly how it works. If you start with the default tube, occupying a 20x20mm square, and size it using the shape properties dialog, then yes, the wall thickness will be correct. However, if you scale the object's diameter using the bounding box drag points, then the wall thickness won't be meaningful anymore.
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Cleared Thanks A Matulich.
I suppose it is the same with the torre shape?
Frederic
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Cleared Yes, pretty much any shape that has a dialog box, once you resize the shape using the bounding box drag points, the units in the shape properties dialog no longer apply. You can still set these properties, but they will change the shape proportionally by the amount previously resized, not exactly millimeters anymore.
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Gerard Pineau Its an old thread but pertinent to my question. If i increase the thickness it the increase toward the id or to the od? sometimes when I change the thickness it changes the diameter.
Is it true what you said that if you resize the tube the information in the shapes dialog box no longer applies.?
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Cleared Well, the information still applies, but not the units. Whatever you set in the box ends up getting scaled by how you resized things using the drag points.
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autodsk user Tube Radius size and how it relates to Wall Thickness caused me a lot of grief, aggravation and wasted time. I was finally able to figure out that Radius is the Radius of the circle PLUS the Wall Thickness. For example, a Radius of 14 indicates a Tube circle Radius of 10, plus a Wall Thickness of 4.
The Radius value MUST include enough space for the Wall Thickness value, otherwise, the resulting Tube Wall Thickness dimensions will be inaccurate. For example, Radius 3 and Wall Thickness 2 results in a accurate Tube 6mm wide and a Wall 2mm thick. But, Radius 2 and Wall Thickness 2 results in a Tube 4mm wide and a 1mm thick Wall, which is smaller than the specified 2mm Wall Thickness. Tinkercad reduced the size of the Wall because there wasn't enough room in 4mm to accommodate 4mm of Wall.
As others have indicated, if a Tube size is changed by using the boundary handles (the dashed outline of the object that indicates measurements), the connection to the Tube's Shape properties will break. Re-entering Radius and Wall Thickness values in the Tube's Shape properties will not re-connect rendering the properties values meaningless.
Hopefully this information will help you avoid lots of frustration!
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