![Rolling Eyes :roll:](./images/smilies/icon_rolleyes.gif)
The pitch of the cone is 1:20 (on each side). A reamer is then referred to as a taper as 1:10.
Sketch:
In my search I came across a huge number of reamers with a 1:50 taper.
But I could only find 1:10 from a diameter of 3mm (which is too big).
So I need a taper reamer with a pitch of 1:20 with a diameter of 0.8mm (0.0315inch) to at least 1.4mm (0.0552inch).
My inquiry to a tool manufacturer was answered with a cost of EUR 600 and a delivery time of 12 weeks.
![Evil or Very Mad :evil:](./images/smilies/icon_evil.gif)
Since I'm poor and impatient, I needed my own solution.
![Embarassed :oops:](./images/smilies/icon_redface.gif)
After all, all I need to do is drill into soft aluminum and it only needs to be 1.2mm to 1.35mm accurate for the stylus to stick.
![Idea :idea:](./images/smilies/icon_idea.gif)
I built this construction accordingly. So I firmly mounted a Dremel in a bracket that I can adjust at an angle. An angle can easily be set: a deviation of one cm must be set at 20cm. (or 30cm with 1.5cm deviation or 40cm with 2cm deviation ...). I mounted this construction on a simple 3D milling machine from Proxxon. The Dremel rotates the 2mm drill at about 10.000 rpm. The cutter rotates the grindstone at around 20.000 rpm.
The drill (Dremel) is moved back and forth along the X-axis. Only a small amount of material is removed due to the low feed rate in the Y direction. After five back and forth movements, everything is ready.
The 3D (manual) milling cutter costs about 230 euros
The Dremel costs 50 euros
The 2mm drill costs 1 euro.
I have saved EUR 319
![Very Happy :D](./images/smilies/icon_biggrin.gif)
P.S .: It works Nice
greetings from Vienna
Thomas