The 1990's saw developments in Wales with the Inversion project working with Tim Collier in Cardiff, the exhibition of the “RS Thomas Triptych” at the Welsh National Academy, inclusion in the Welsh National collection and other works shown in The National Eisteddfod.

After 2000 the abstracts began to deconstruct boundaries still further. Inspired by the dynamics of the RS Thomas Triptych and Boscawen-un in Cornwall he began to create the “Standing Stones” which developed nationally and internationally and by 2003-4 had become the “MONUMENTS or self delusion” project. This project inspired the film/DVD of the same name and launched in late 2006 as an artwork in itself providing insight into the artists working methods and the project but also as an added dimension to the developing exhibition of this work.

Duffy's work inspired several other dimensions during this period, in 2005 was used in the movie “Basic Instinct 2” and in 2006 the Triptych was used for the album cover of a new rock band the “Cardinals”.

Duffy has a history of assisting and encouraging other artists as with Artgames in the 70's, Arena Studios in the 80's, at the RAW gallery project Whitechapel London in the late 90's and at 340 Old Street, Shoreditch London from 2002, and in 2005 with the British Art Salon in Berlin and URBAN CINEMA in Liverpool.