How to make circle cuts and hard cuts in tile yourself

What people tried

Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.

1. 1
   Using an angle grinder with a tile blade
2. 2
   Hiring a contractor to finish the job
3. 3
   Using suction cup tools or electric suction devices for better grip and handling
4. 4
   Back buttering tiles
5. 5
   Making multiple attempts before getting the cut right
6. 6
   Ensure tiles are clean of thinset, replace the scoring wheel if the line is faint, and position the feet about 3 inches to one-third of the tile's length before pressing down smoothly.
7. 7
   Using wainscoting to cover up cut errors
8. 8
   Using caulking to cover up non-straight lines against the bathtub
9. 9
   Leaving existing caulking and reapplying on top

In their words

Unedited, most upvoted first, each linked to the thread it came from.