We’ve used wood filament before, and we hazily remember a Cura plugin that changed temperatures to create wood grain. But unlike [Patrick Gibney], we never thought of printing a faux wood log coaster that looks like it has rings. Check out the video below to see how it works.
The filament is not really wood, of course, but a polymer — usually PLA — mixed with wood particles. Changing the temperature does a nice job of darkening the wood. However, it also changes the properties of the carrier polymer, and that’s not always a good thing.
[Patrick] is manually adjusting the temperature and only using the wood filament for a layer or two, which is smart — there’s no reason to have wood-grained patterns inside your print. There have been scripts for this technique, although some are too outdated to work with modern slicers.
While we aren’t a fan of printing the dark areas at nearly 300C, it seems to work, and the rough appearance helps in this particular case.