I have a Bosch strimmer and I go through blades quickly. When I need a new blade I have to spend ages digging around to find where I've left the pack and, usually, I end up going to to buy another pack of blades. For what they are, they're really expensive..

So, instead, I started playing around with printing my own. I'm printing them in TPU because they're much more long-lasting. They can bounce against brick or metal and keep on going. And, best of all, they take almost no material and print in 10 minutes. I can make one when I want one and they're cheap.

Don't go down the “stronger filament is better” path.  I started printing these in ABS and, when they hit brick or metal they shattered :-)

I hope you find them useful too