Wow, thanks! I read to do very hallow angles, is that true? Have you ever used 3m Trizact? 5000 to strop
For reasons I've never truly understood, stropping seems to be one of the most controversial and debated topics in sharpening. So, you're going to get a lot of differing inputs. Because of that, this is one of those things where you really do need to do some experimenting to find what you like.
On leather, I try to strop at the angle I sharpened or maybe a titch higher and my pressure can range from light to moderate. I've done higher pressure and higher angles and it ain't for me. If you're too shallow though, you won't really be doing much.
These days I use a strop primarily only for edge maintenance or
maybe a nice finish to sharpening but not burr removal. I started sharpening 40+ years ago and let's say I started to figure it out eight or ten years ago.
In those 8-10 years I've played around quite a bit with stropping but there is always new experiences to ponder. Case in point, I recently found myself needing some new green compound.
Wanted some good stuff this time and bought some from Bernal Cutlery. In his video demo, Josh discusses how to coat the entire strop with it. I've normally just sort of haphazardly applied it and rather lightly. So, my little bottle comes and I follow Josh's direction. Then I strop some shirogami on it.
Whoa!
First, the paste is indeed much better quality and far more consistent than what I'd used in the past. So it works much better. Then having that amount on my strop changed the results as well. What I got was a HIGHLY polished edge bevel that was too slick for my liking. Now, that is a positive reflection of Josh's product, and certainly not a negative one. It means, that if/when I use that strop, I need to limit my passes to a couple of very light strokes.
Also, to
@cotedupy's point, with leather, it is pretty hard to round the apex to the point of poor performance. As I said, many people like that bit of convexity it can provide.
I haven't tried the product you mentioned. For the most part, my stropping tools are simple. Cardboard does a lot or a two-sided leather strop with some compound on one side. I do have high-vanadium steels in pocket knives and for those I use diamond lapping film on a piece of poly.