Which type of Chamfer Drill should I use to drill plastic enclosure bottom holes?

[HKPhysicist]

Hello Friends and Experts,
I have bought a Bosch Dremel 3000.

I want to use it to try to drill chamfer holes on the bottom of a plastic enclosure (wall is 1.6mm thick).
Then, I will programme it to a CNC from within FreeCAD.

Would you recommend a suitable Chamfer drill for my intended task? I have no idea what to choose.

Thanks for your attention. ^^

Yours faithfully.

[Harvie]

Probably some kind of "chamfer drill". Dremel is probably not very good choice for working with plastics, since it cannot provide torque under low RPMs. high RPMs in plastics often lead to melting and quite uggly gum up of the bit.

[HKPhysicist]

I have found this type of counter-sink drill on aliexpress. It seems to be a good candidate for my purpose.