Vibe question

here is video where the motion looks right. the grit coating is a little heavy because this is the finer 600g stage and it has already formed some mud.



I think this bowl has too much water. The polish slurry is supposed to be thin, and recipie for obsidian tears are ofetn special, but it looks too thin and foam is forming.



here is damp rock w/o grit. I think there are almost too many flats and preforms in this batch. In a smaller bowl this would not work so well because flats get stuck together. But in a bowl this size, it might work OK



this one has way too much water:


this one is too slow in my opinion, but you do see polish being added while moving:


I would say too much standing water in bottom, but maybe this model had enough energy to move grit up out of water. movement looks good:


this looks too slow too, and there appears to be too much mud on the barrel, but I can see rock so not too much mud on the rock. Not sure exactly what is wrong with this barrel:

If you get it right from the start, pay attention to the motion. As a slurry forms and motion slows add drops of water or spritz of water until initial motion is restored. This can be tricky sometimes. If you ran for 20 hours you must have it right. Remember grit will be broken down in a vibe in 24 hours or so.

One thing I've discovered that helps in the coarse and fine grit stages is to rotate the bowl 180 degrees every few hours or so. Because the movement of the rocks tends to be in a single direction, there tends to be a buildup of slurry and grit on one side of the bottom of the bowl, especially in the coarse stage. Rotating the bowl re-introduces this slurry/grit mix back up into the rocks. It speeds up the process and I get more complete breakdown of my grit.