Bronco78th Posted November 3, 2021 Report Share Posted November 3, 2021 Hi All. There is mathematical equation apparently which can be used to dictate how much you need to stretch a circle to make it look round on a cylindrical item. Anyone know what that is? Kind Regards, John Quote Link to comment Share on other sites More sharing options...
petercoulson Posted November 3, 2021 Report Share Posted November 3, 2021 If you use the correct diameter for the item and the machine then circles should be circular it's when you don't they look wrong assuming you are using a computer machine with rotary attachment Quote Link to comment Share on other sites More sharing options...
Trev Posted November 3, 2021 Report Share Posted November 3, 2021 Hi Assuming I haven't made a mistake with the maths, then: x = ((Pi * D)/180)* arcsin(d/D) where d = circle diameter D = Diameter of cylinder x = diameter of circle if projected onto a cylinder Best Regards Trev Quote Link to comment Share on other sites More sharing options...
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