It is. you can print with infill making it lighter but with internal hex pattern. I print solid. thick wall, thick base layer, and 0 % infill. I can press plenty hard on that scraper and no problem with give or cracking.
It does seem though, that it peels shards off rather than sparking with heavy pressure. I can almost make a magnesium like pile and light it. That HSS is the best stuff ever.
That weighs almost 1 pound. 1/2"x6" ferro rod, antler, HSS, and sleeve with lanyard. This rod can almost light car tires. I usually scrape about a 1/2" at the tip. Should last for years.