Hi Ingo

> the most important thing is not to use unattenuated
> waveforms from a vco.

and the second most important thing (for most waveshapers):
Its usually not interesting to modify timebased (=LFO/Env) the
waveshaper itself, but to use a signal that comes already with
modifications. Example:

Do NOT use this:
Env------+
| |
VCO->Waveshaper->VCA

Simply use instead:
Env
|
VCO->VCA->Waveshaper

third most important rule:
For waveshapers use dark sounds, bright sounds do not win that much buy
a waveshaper.
Classic is either a triangle VCO through a VCA or a "dark" lowpassfilter
with very high resonance

Env
|
VCO->VCF->Waveshaper->VCA

or

Env
|
VCO->VCF->VCA->Waveshaper


best regards, Florian