Yes. We're talking about 3D printed things - and that's very much ON topic. The point is that keen new 3D printer owners rush around, 3D printing EVERYTHING. In the case of a feather board, you need to step back and ask, "Is this a good way to make a feather board?"
It is not a matter just of how - or what filament. It involves engaging brain and asking, "Is this the best way to make, basically, a flat sheet of material with diagonal cuts in it?
You can see that the printer is 6.5 hours into a print and has used (wild guess) £5-£10 worth of filament. Again, my guess is that the design is one downloaded - so not a lot of time there. You can buy an ABS (stronger) featherboard for around £13 or, as Jacob says, make one in 5 minutes from scrap.
So, the point is... lovely and clever it may be; but is this the most appropriate technology?
Yes, I do have a 3D printer. Yes, I do use it for jobs where a 3D printer is appropriate. Yes, I do have several extractor hose adaptors. (And yes, Inspector, my cones are longer!!) In the same way, yes, I do have a small laser engraver - but I DON'T use it for printing rubbishy "etchings" of photos on wood or canvas just because it can. There are more appropriate ways to put a photo onto an item that will look better.
In a similar vein; my teacher used to say, "You can,, indeed, cross the Sahara in a Mini. It has been done. If you are considering crossing the Sahara though, you need also to consider whether a Mini is the most appropriate means of doing so. Or whether, perhaps, a camel might be better."