So I decided to fill this gap with my instructable from Italy.
In the pictures:
1) Rugby Player(Gerard Fraser) kicking a penalty.
2-5) Some examples of different brands commercial kicking-tees
Step 1: Needed Material and Tools
- 1,5 litre Cola Plastic Bottle
- Pattern( in the pictures)
- A little of isulating tape is needed (more is optional and useful)
- Permanent marker pen(fine-small tip is better)
- Shim (1 inch or better 3 cm)
Step 2: First Step
Trace a vertical line(representing the forward of the tee) with the marker availing the chamfer.
This line is useful as reference.
Step 3: Second Step - Lower Part
the tip-point of the marker should be about 3,5cm high from the desk surface, but choosing the shim remember that you must consider the radius of the marker too.
Remove the bottom of the bottle cutting not too close to the traced circle.
Cut following the circle with precision.
Step 4: Third Step - the Pattern
or print it, but pay attenction that it's in the right scale!!)
on a sheet of paper or something flexible.
DIMENSIONS IN CENTIMETRES!!
OPTION: If you want a taller/smaller version of the kicking tee you can:
A) add/subtract a constant C to the vertical dimensions and draw the pattern with those dimensions
for example add C=2,5cm,
dimensions become: 11,3 - 11,3 - 11,5 - 11,3 - 10,8 - 10,3 - 9,2 - 8,4 - 8,2
B) draw the pattern with the original dimensions and then draw a rectangular shape of the desired height just under the pattern
the result is the same
In both cases I would not exceed 5 cm or 2 inches):
Then cut out following the edges.
Step 5: Fourth Step - Upper Part 1
The longer vertical edge of the pattern should be on the vertical reference line.
Convolve the pattern around the bottle, the pattern is half of the bottle circumference
With the marker trace the upper edge shape on the bottle surface.
Step 6: Fifth Step - Upper Part 2
The upper part removed
Cut following the line traced
Step 7: Finish and Optional "final Touch"
(I lost the first i made, completely transparent , during a windy and quite dark evening, the wind moved it and I wasn't able to view it on the field)
The tee can hold the ball at different angles; axis from about 85 degrees to about 30 degrees from horizontal.
MODIFICATION: For Other kinds of balls for example American Football the patter would probably need to be modified.