Hi,
V5
my object of dia 36mm and plate thickness 1mm,
I export it as .stl
the recipient’s slicer for 3D printing says its very small.
he says:- I’ve measured the sliced image and I have the following dimensions. The outer flange is 1 pixel thick or about 0.035mm The diameter is 1.45mm (41 pixels) with a maximum thickness of 0.175mm (5 pixels)
do maths
and deducting 9.29134 from 10.7087 gives 1.41736 which is the inch diameter so that makes sense,
unless everything is 1:10 scale as Rhino V5 can be, but that’s still 3.6mm if at 1:10 scale, and not 1.45mm
So whats gone wrong, I selected 0.001inch from the 0.01inch in the options box as I have fillets 0.003inch.
went with default settings apart from that.
STL is a “unitless” file format.
Industry standard practice is to assume millimeters.
If you have modeled in Inches, export to STL with a scale factor of 25.4 to get mm.
Hi, V5
attached this test disc, same 36mm x 1mm as the project.
drawn in the same project file, 36mm dia circle solid extrude 1mm.
export as stl. 0.001 in box, rest as default
attached the settings.
have sent to the 3D print company. asking for feedback on size.
Hi,
V5
Methinks simply tell recipient to enter inches as units.
If he/she enters units inches in their slicer then that should work, should it ?
else I have to go to properties and alter units to mm and hit ok.
Then how do I go about resscaling everything , and is that 25.4 x100 = scale factor 2540 ?
where do I do this rescaling of the entire project and what tool and what value to enter ?
Finding rescaling everything a bit scary, I might forget to undo it before saving file.
It does not. STL is a “unitless” file format. Industry practice assumes is it millimeters for convenience.
Madness…
I like to model in Inches as well.
When I send out a file for STL printing, I make a duplicate of the 3DM, open it, change to millimeters and scale it, then export as STL.
Hi,
I have asked company if they can enter inches into their slicer but it has no provision for such.
Hard headed assumption that we all work in inches by slicer company.
Like you I have made a version copy of the 3D file and suffixed it ‘a’. made it mm and ok to 25.4
more duplicates to cope with !
Lets see what happens with that.
stl sending needs this flagging up and advice to say diimension in email sent, else some expensive mistakes could occur.