Sawtooth Wasters
blackfencer.com makes sawtooth nylon wasters to simulate sharp swords. At Berlin Buckler Bouts X, Rasmus, Per and I (Mikkel) had a go with a pair of them. 

They are quite useful for getting a sense of how sharp swords bind or stick to each other, but as a much safer and cheaper alternativ to the real thing.

We found that they stick more than sharp swords, but they are a nice supplement for training and sparring.

Followers on Patreon get an earlier release, and a voice over version will be added, for patrons only.