Incredibly useful little things; I use mine (I have the LN set) all the time. The big danger with them is localised scraping which can, if you’re not careful, result in a ‘dip’ in the surface being attacked. I’ve tried a number of different burnishers but the best one I’ve come across is the carbide one sold by Workshop Heaven. Also dead easy to sharpen once you know how; the Veritas Jointer & Edger (603044) is great for ensuring the edge is square when it’s filed.
Also worth looking at scraper planes; the LN 112 is good but a ‘learning curve’ to set up and use. The little LN 212 is an absolute gem as is the Veritas Cabinet Scraper (474843). The difficulty there is that the blade is too small to hold effectively when sharpening so I’ve just replaced it with a larger cabinet scraper blade. Simples!
