Inking Corners are great, they help you get excellent prints first time because they push the ink into the line and tones of Etchings and Dry-points. Use in conjunction with scrim and paper wiping and you will get excellent prints.
Use Inking corners to apply the ink- then scrim in circular motion to remove excess ink – and last the wiping paper to polish those whites and tones up. Leave the ink glistening on the plate, don’t over or under wipe and you will get consistent excellent prints. Learn to feel the plate under the paper and it will tell you where it wants to be wiped with just how if feels!