Filligree, Hollow Ground, and Angle Blades

[leahlowe]

What is the difference in all of these swivel knife blades? What is the use for each type? Looking to buy replacement blades for mine to do some basic floral tooling patters. 

[cradom]

Filligree blade is used to cut completely through the leather so the piece under it can show through. https://www.google.com/search?q=filigree+leather&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjEvL_5qMbXAhXGxlQKHc74Dv8QsAQIMQ&biw=1920&bih=919

Hollow ground is pretty much a normal blade. Hollow ground refers to the way it's ground into it's final shape. (scroll down)  http://www.raphaelstoday.com/Pages/RightToolsForTheJob.aspx

Angle blade is used for fine detail work. It's usually smaller and ground to a sharper angle than a regular blade, which is flat.  https://www.google.com/search?biw=1920&bih=919&tbm=isch&sa=1&ei=2jUPWu3CBuvBjwTa4KmQBQ&q=angle+blade+swivel+knife+blade&oq=angle+blade+swivel+knife+blade&gs_l=psy-ab.3...11700.22025.0.22528.13.13.0.0.0.0.135.1452.1j12.13.0....0...1.1.64.psy-ab..0.1.134...0i30k1j0i8i30k1.0.J28siySFPFM

There used to be what I called a hair blade, which was wide and made little lines in a row so it looked like hair. Don't know if they still make this. (I guess they do) http://goodsjapan.com/leather-craft-slanted-22mm-filigree-hair-blade-for-tandy-swivel-knife-narrow-450-p.asp