--- /dev/null
+#openscad -o output/bushing.stl bushing.scad
+
+INCLUDES = $(wildcard inc/*.scad)
+
+MODELS = $(filter-out configuration.scad, $(wildcard *.scad))
+
+STL_FILES_1 = $(foreach src, $(MODELS),output/$(src))
+STL_FILES = $(STL_FILES_1:%.scad=%.stl)
+
+all: $(STL_FILES)
+
+output/%.stl: %.scad $(INCLUDES) configuration.scad
+ mkdir -p output
+ openscad -o $@ $<