Hello
I need to make about 32 identical, small pieces of rectangular mild steel plate with dimensions: c.16 x 13 x 1mm.
The tricky bit is that I need to put a chamfer on one edge of the steel that is EXACTLY 45°.


Background
It is just for a novel product idea that I am working on.
I am thinking that in principle I just just cut a long strip of steel that is 13.1mm wide, and put a 45° chamfer on it and then cut it up into 16mm lengths.
My first problem would be cutting a long strip of steel by hand (using a hacksaw) reasonably accurately, before I file it flat.
But even more difficult would be putting an ACCURATE 45° chamfer onto one edge. With enough time and very careful filing and sanding I suppose this is would be possible, but not easy!
So was thinking that maybe I should buy a small desktop milling machine.
Any suggestions?
With thanks
J
PS FWIW, I do own a small Proxxon drill, with a small Proxxon Micromot 50/E rotary drill with possibly I could use a small grinding wheel. However although it seems very well made, and spins at up to 20,000 RPM, it's only 40watts. And in any case I fear that there might a bit of chatter, no?

So do you think I should add to what I have got…?
e.g. Possibly I could add a Proxxon "MICRO compound table KT 70"
https://www.proxxon.com/en/micromot/27100.php
Possibly with some sort of vice(??)

However according to this youtube video this table suffers quite badly from wobble !
https://www.youtube.com/watch?v=Ws6UwE1qB2I
OR should I just start again from scratch and buy a different system?
NOTE: I have never used a milling machine before, so although I am keen to buy something that is well made with good quality, I am needing to be cautious. Also I just have a very small home workshop so whatever I buy needs to be pretty compact!
Any advice?
J