You have 2 options now:
- calculate the cone data yourself using the following formula.
The black cone is what we want to get.
small diameter = smaller desired diameter
large diameter = larger desired diameter
height = desired height
QT = small diameter / 2
RS = large diameter / 2
PQ = QT * height / (RS – QT)
PR = PQ + height
PT = √((PQ * PQ) + (QT * QT));
angle to cut away =
inner circle diameter = 2 * PT;
And now proceed:
Draw two centered circles with the inner and outer diameter, draw the calculated angle and cut it away.
The result should be a template for a cone with the specified measurements ;-)
If you don’t have a protractor you can print and cut the degrees disk from the entry ‘Constructing a Cone’.
If you want to know more exactly what you’re doing here, check the entry ‘Constructing a Cone’ after all ;-)
Here at unikatissima: ‘Constructing a Cone’