-KNIFEBLOCK_LAYERS=1 2 3 4 5 6
-KNIFEBLOCK_LAYER_FILES=$(foreach l,$(KNIFEBLOCK_LAYERS), \
- knifeblock-knives-l$l.dxf)
+KNIFEBLOCK_TEMPLATES=$(foreach k, 0 1 2, h$k a$k)
+KNIFEBLOCK_TEMPLATE_FILES=$(foreach t,$(KNIFEBLOCK_TEMPLATES), \
+ knifeblock-knives-t$t.dxf)