Get a cheap carborundum axe stone, a brass bristle BBQ brush and a liter of 5-30 motor oil. The oil will be the swarf carrier as you grind off the clogged whetstone surface of metal and smashed abrasive particles. Flush it well, flood it to get it clean. (I've crapped up my share of stones.) The stone is buggered up now anyway, you might as well try to get it cleaned up. Something new to learn to do well.
Some people try to avoid paying attention to bevel angles. In my mechanic's handbook, I see (and use) 5 different tip angles for HSS drill bits.
For wood carving tools, 30, 28, 25, 20, 15, 12 degrees are the total included bevel angles that I need to use. From a Stanley Bailey #5 plane to my 2-handed planer knives for smoothing split wood surfaces.
For all of my non- carving edges knives, I have elected to keep every one of them at 25 degrees.
3 of my 5 cleavers, the little 15cm ones, tarnish really badly. I could waste days trying to clean them off only to make a mess tomorrow. Sharp? Clean? Slice and dice.
I was taught freehand sharpening. All the unwritten tricks. I decided that I was going to get to be really good at it. It took a lot of practice to gain a skill that I never dwell on. I make it look simple, sharpening a crooked knife over my knee or an elbow adze with silicon carbide sandpaper wrapped around a tennis ball.