After using the grinding pads, I can’t believe I used to sand bottoms by hand! So far they work great for what I need, a quick smoothing after glazing. I use speckled clay so a final sanding for a smooth bottom is needed.
I ordered the 50 and 80 pad but was shipped two of the 50, emailed customer service of the mistake included pictures and they responded quickly and shipped the 80, no questions asked.
I have ordered tools from Diamondcore before and I will continue to purchase from them primarily based on their quality.