+1 ... this advice holds true for any wet-shaving tool, but even more so with a Slant.
Originally Posted by JPM
I have found that my Slant (39C) works best with a Feather blade, but YMMV. Also, it gives its best results with a 3-day or more growth of whiskers, so I can't use it as an every day razor.
The Slant gives me the closest, easiest shave of any razor in my rotation, assuming proper prep-steps and good technique.
See the Balance Point Method (BPM) in the ShaveWiki for a good way to hold this (or any) razor.
In any case, keep a styptic pencil or alum block handy for your first few shaves. Its not unusual to experience a few nicks and weepers until you get your technique down pat.
I Came. I Shaved. I Conquered.