Use a spade handle drill which works like a giant hand mixer.
How to make a shower floor for tile.
Add only enough water to the dry mix to make a dry pack.
Here it is best to use premixed deck mud if it is available at your local home improvement store or tile shop.
Properly built shower there are a couple of options to create a shower floor for tile using deck mud.
Slip a flatbar into that hole and under the mortar.
Use a 3 pound sledgehammer to hammer the tile until it s dislodged.
Continue chiseling down to the waterproofing.
If not you can make your own mix with 4 parts sand to 1 part portland cement.
The first is a single layer shower floor which can then be coated with redgard or a similar product or covered with kerdi to waterproof it.
Make the smooth surface of the tiles rougher to create more traction usually done by using an anti slip solution add anti slip treads or stickers cover the tile floor with non slip rugs switch to non slip floor tiles only recommended if you re planning a full renovation.
Mix in water and more concrete mix following the manufacturer s instructions until the result is the consistency of a milkshake.