FarmersFightAg said:
I struggled for years with this. Have finally found more consistency with turning the ball over left. My miss hit is now on the left side of the fairway, but it's added distance rather than a high flying weak slice.
Ball placement further up your stance (at or past your left heel, assuming you are a righty), and try for a stronger grip where it feels like your thumbs are a little behind the club shaft pointing right. The grip will allow your wrists to have more freedom with turning through, rather than laid off with an open club. Both of these should allow for a more closed face at impact, and can even get you a little draw!
A little draw? That's a recipe for pure duck hook.
To the OP. Listen, there isn't a ton of stuff that causes the slice.
However, there are a TON of ways to "fix" (really just masks the poor swing mechanic) the slice. Over-strengthening grip, drastic ball placement in stance, closing feet of stance.
Start thinking more cerebral about how the ball flight works in relation to your club face at impact. Slice is caused by 2 things: 1) coming across ball (outside/in swing path), or more commonly referred to as "coming over the top". When the club face strikes the ball from this angle it causes the ball to spin right to left, or clockwise. This right spin creates the slices and takes off massive distance. And 2) club face is open at impact. This will lead to pushing the ball right, as well as creating right spin.
Sometimes these are paired together for a mega slice. Over the top and open club face. Ball is OB within 50 yards.
I struggled (and on bad days still do) with the open club face. This can be fixed by making sure you're in a good position at the top of your back swing with a flat or flexed wrist (DJs wrist is super flexed). From there, keep the club handle moving with a good follow-through.
The tips to strengthen grip to allow for wrist movement (I cringe at promoting wrist movement) are there to allow you to slam the face shut at impact. This is because you're way open until the very last second.
Sudden shutting of the club face may work on some holes or days, but adding that much inconsistency will not improve your game. Just think, you're having to readjust poor mechanics in the last .05 seconds the swing - not a recipe for consistent success.
NOW, if your problem is swing path (outside/in), go get some lessons and get on a camera.
It took me 4 months of lessons at Golftec to fix mine (swing way too inside/out). Some pros still tinker with theirs all the time (justin rose recently re-did his).
Swing path takes a change in muscle memory but can be done.
Lots of drills but mine was always the swing thought of "swing left" to create less hook (inside out) path on my balls.
Hope this helps.