But Really don't be dismayed by this alphabet soup. Just a few varieties are in everyday use. Also, companies are likely to stay away from these overly geeky monikers in favor of much more descriptive names alluding to A necessary top quality from the filament, such as flexibility (NinjaTek's Ninjaflex https://checks-design67889.ssnblog.com/32259480/abs-for-dummies