I used to be a purist and do all the work with an 8"+ file. But I have found that if I'm careful, I can do most of the grunt work with a cheap, 4-amp angle grinder. I use very light pressure and many fast passes to avoid ruining the temper of the shovel. When I have established a rough 45-degree bevel, a few last quick passes with essentially no pressure will take off the 1/2-mm of steel on the bevel that has been hardened. If I don't do this, the file will bounce right off in places. If the file bites into the metal, all along the bevel, I've got it right. I always finish with a file. I can easily put on an edge that will cut rope, roots, veggies, or leather work boots (!).

Once you have put an edge on your shovel, how do you keep it from cutting your backpack, or other stuff if you do not use a carrier. I don't want to use a carrier because of the added weight. My ILBE backpack has a pocket and sleeve which is ideal to carry an etool and while the pocket seems sturdy I think over time a sharp edge to cause unacceptable wear.

I think I am going to try the stripping they make to go on the edge of car doors, but i am wondering if anyone has any better ideas.

I typically fold a piece of duct tape over the sharpened edge. It will stay put, and comes off easily. After any significant use you need not worry about the edge cutting any more; it will be quite dull.

I am a lazy guy.
when winter comes, I always use a folding shovel.
Maybe you would think that it's not convenient to clean the snow.
But it is easy to carry .
It’s from URL removed.