I bought some emery grit from eBay. The bag ripped somehow and it’s all over the drawer it’s in. Supposed to sharpen the pins and needles. Hate it. Have also used the walnut shells ground up. Also didn’t like it. I collect antique metal pincushions and most of them need a new top. I used velvet. What I want are those raw wool fibers that shrink in warm water. They would have the lanolin they were talking about. My question is how long is the lanolin good for before it goes bad? And won’t the lanolin gum up my pins and needles?