Slice

Technical
BH Slice: The non-dominant hand is on the throat of the racquet prior to ball contact.
FH Slice: The non-dominant hand is active, even across your body; it’s not in your pocket or hanging like a Christmas stocking.

Lumber Slide
One end of a 5ft 2×4 leans on the net.
The other end is held high by the Coach.
P slides his slightly open racquet down the 2×4.

Railing Slide
P slides his slightly open racquet down the railing.

Self Slice Slide (BH example)
Hold your non-dominant arm straight out to side at shoulder height.
Bend at elbow, still at shoulder height.
Slant forearm down a bit, creating a slope.
Move shoulder forward a tad.
Slide the throat of the racquet along the slope you’ve created 10x

Alternatively, a 2nd racquet could be held by the non-dominant arm to create an easier and more out-front slope.
This exercise reinforces the stability of the arm/elbow as you slice.
The racquet should be only a little bit open, not so open as to serve pancakes.
The FH version of this is a little awkward, but works.
The non-dominant slope has the hand at the top of the slope, and the elbow at the bottom.

Flick + Slice (BH example)
Balance the ball on the racquet.
Knuckles up, ie. BH orientation.
Gently “flick” ball up and let it bounce.
Then Slice it towards the net/wall.

Volley-Up + Slice (BH example)
Balance the ball on the racquet.
Knuckles up, ie. BH orientation.
Gently volley the ball upwards k times.
Let the ball bounce.
Then Slice it towards the net.

Bump-Up + Slice (BH example)
Balance the ball on the racquet.
Knuckles up, ie. BH orientation.
Gently flick the ball upwards and let it bounce.
Get under the ball and Bump it up, and then let it bounce.
Repeat k times.
Then Slice it towards the net.

2HBH Slice
Sometimes it’s difficult to keep the arm stable on the BH Slice.
This progression has the non-dominant hand stay on the throat of the
racquet thru and past ball contact.