Hi Craig, Yes It was a tip I posted, and it works great, Paraffin Wax (the wax used to make candles). You can buy it in bar form real cheap at any craft store. Its great ! If you use a candle make it a clear one. Here is the original post : https://discuss.inventables.com/t/make-your-dust-shoe-glide-up-and-down-when-adjusting/59646