I was looking at the dimples on the wing access covers made by the pneumatic squeezer. Totally under dimpled. On both pictures the dimple on the left is with the pneumatic and the dimple on the right is re dimpled using the DRDT-2. Can you see the difference.
If I can help it, I will never use the pneumatic squeezer for dimples on the outside of any skin. Pneumatic is OK for dimples under skins like rib flanges.