Loads up quickly, but is easy to clean with some Barkeeper's friend and a scotchbrite. Which would have worked slower but I would have more material left on the stone. Find helpful customer reviews and review ratings for Spyderco - White Ceramic Sharpening File Set with Suede Snap-Close Pouch - Ceramic Stone - 400F at Amazon.com. As mentioned, the sintered stones are essentially non-porous, especially the white ceramic Fine/UF stones. It only … The white alumna ceramic sharpeners from Spyderco are designed for people who take knives out into the field that are already sharp. One quibble though. Spyderco has been in the ceramic stone business for awhile, they've had good reviews from professional knife guys, but never seem to have caught on. When I leveled the Spyderco ceramic stone using my DMT coarse stone it rendered my diamond stone useless. The Spyderco stones don't hold onto the oil like other so-called 'oil stones'. Seems like it's worth a try to me especially if it's your money and not mine. Spyderco Ceramic Bench Stone, Medium Not enough left to use it in sharpening. I should have used my SiC stones for this leveling. If you want to take serious amounts of metal off at once, I would suggest a file, then using one of Spyderco’s brown stones … My fine diamond stone still has some left to be able to use it. Read honest and unbiased product reviews … This is a good stone for refining an edge after sharpening with a coarse stone. Grit comparisons involving an Arkansas stone …