Wanhao i3 Z-axis bearing block

Since extending the Z-axis on my wanhao i3 printer I discovered that there was a small amount of ringing toward the middle of the axis when printing at high speeds. To alleviate this I decided to use the feed screw to provide extra support.

I did this by putting a small bearing block at the top of the axis. However for this to work you will want to check that your feed screws are perfectly straight, this is easily done by putting it against the straight edge of a ruler or on a piece of glass.