Ok, we sorted that out - it's that somehow Depth on those series was set to 0 .

Our version is 7.07 (VCL, used with Delphi 7).

The gallery allows to select a 3D style for the bar series, but it is not really shown 3D in the chart (even though the chart itself shows as 3D)

So how about some help and advice?

Yes. This is currently the full source. What I need is: 1. Attach a custom editor. 2. Make these series types appear as separate types in the Gallery, so the users know what they are selecting. Both of these things work fine, and incomplete 3D rendering is the only problem. BTW, we have similar cust...

I derive my own series classes from some standard Teechart series classes (such as TBarSeries, TLineSeries, and TPieSeries), and register them, using the RegisterTeeSeries procedure. The classes appear fine in the Gallery, and series are created OK. The one problem I have is that when I create (usin...