Allen was renowned for his skill at scratch-building and creating scenery, and he pioneered the technique of weathering his models to make them look old and more realistic.
 Weathring a technique pioneered by the brother of Allen was used to make the models to make them look old and more realistic.
( z1 use :ARG1 ( z2 weld :ARG1 ( z3 technique :ARG1-of ( z4 pioneer :ARG0 ( z5 person :ARG0-of ( z6 have-rel-role :ARG1 ( z7 person :name ( z8 name :op "Allen" ) ) :ARG2 ( z9 brother ) ) ) ) ) ) :ARG2 ( z10 make :ARG0 z2 :ARG1 ( z11 look :ARG0 ( z12 model ) :ARG1 ( z13 and :op ( z14 old ) :op ( z15 realistic :ARG1 z12 :ARG2-of ( z16 have-degree :ARG1 z12 :ARG3 ( z17 more ) ) ) ) ) ) )