diff --git a/scripts/cpu.sh b/scripts/cpu.sh
index 5fb9b3d..0ed51e4 100644
--- a/scripts/cpu.sh
+++ b/scripts/cpu.sh
@@ -8,5 +8,4 @@ else
 	CPU=-1
 fi
 
-
 echo $CPU
\ No newline at end of file
diff --git a/scripts/v3.sh b/scripts/v3.sh
index e09c100..cc1fa58 100644
--- a/scripts/v3.sh
+++ b/scripts/v3.sh
@@ -3,89 +3,153 @@ V="v3"
 
 echo "Rendering GNAL ${V}"
 
-sh ./scripts/license.sh
+bash ./scripts/deps.sh
+bash ./scripts/license.sh
 
 VERSION=`bash ./scripts/version.sh`
 CPU=`bash ./scripts/cpu.sh`
 DIST=./stl
+CSG=./csg
 IMG=./img
 NOTES=./notes/${V}.csv
+STEP=true
+LOGGING=true
 
 #"quarter_a" "quarter_b" "quarter_c" "quarter_d"
 #quarter pieces not rendering properly
 
-FILES=( "spindle_bottom" "spindle_top" "spindle_single" "spacer" "top" "spiral" "insert_s8" "insert_16" "spacer_16" "insert_single" )
+FILES=( 
+	"spindle_bottom" 
+	"spindle_top" 
+	"spindle_single"  
+	"insert_s8" 
+	"insert_16" 
+	"spacer_16" 
+	"insert_single"
+	"top" 
+	"spiral" 
+)
 SIZES=( "50ft" "100ft" ) 
 
 mkdir -p $DIST
+if [ $STEP = true ]; then
+	mkdir -p $CSG
+fi
+
+render_part () {
+	scad="${1}"
+	SIZE="${2}"
+	FILE="${3}"
+	stl="${DIST}/${SIZE}_${V}/gnal_${SIZE}_${FILE}.stl"
+	csg="${CSG}/${SIZE}_${V}/gnal_${SIZE}_${FILE}.csg"
+	png="${IMG}/gnal_${SIZE}_${V}_${FILE}.png"
+
+	echo "${scad} - ${FILE}"
+
+	start=`date +%s`
+	if [[ "${SIZE}" == "100ft" ]]; then
+		openscad --csglimit=2000000 -o "$stl" -D "PART=\"${FILE}\"" -D "FN=800" "${scad}"
+	else
+		openscad --csglimit=1000000 -o "$stl" -D "PART=\"${FILE}\"" -D "FN=600" "${scad}"
+	fi
+	
+	end=`date +%s`
+	runtime=$((end-start))
+
+	fileSize=`wc -c < "$stl"`
+	fileSize=`echo $fileSize | xargs`
+
+	if ! [ -x "$(command -v admesh)" ]; then
+		facets="N/A"
+		volume="N/A"
+	else
+		firstline=`head -n 1 "$stl"`
+		if [[ $firstline == solid* ]]; then
+			#convert from ascii to binary
+			tmpBinary=`mktemp`
+			admesh -c -b "$stl" "$tmpBinary"
+			newSize=`wc -c < "$tmpBinary"`
+			newSize=`echo $newSize | xargs`
+
+			if [ $newSize -lt $fileSize ]; then
+				cp "$tmpBinary" "$stl"
+				percent=`echo "scale=1;($newSize/$fileSize)*100" | bc`
+				fileSize="${newSize}"
+				echo "Binary conversion created STL file ${percent}% of original"
+			else
+				echo "Binary STL is larger than ASCII original, skipping conversion..."
+			fi
+			rm "$tmpBinary"
+		fi
+		ao=`admesh -c "$stl"`
+		facets=`echo "$ao" | grep "Number of facets" | awk '{print $5}'`
+		volume=`echo "$ao" | grep "Number of parts"  | awk '{print $8}'`
+	fi
+
+	hash=`sha256sum "$stl" | awk '{ print $1 }'`
+
+	if [ ${LOGGING} = true ]; then
+		line="${VERSION},${CPU},$stl,$hash,$fileSize,$srchash,$srcsize,$facets,$volume,$runtime"
+		echo "$line" >> $NOTES
+		echo "$line"
+	fi
+
+	start=`date +%s`
+	if [[ "${SIZE}" == "100ft" ]]; then
+		openscad --csglimit=20000000 -o "$csg" -D "PART=\"${FILE}\"" -D "FN=800" "${scad}"
+	else
+		openscad --csglimit=10000000 -o "$csg" -D "PART=\"${FILE}\"" -D "FN=600" "${scad}"
+	fi
+	
+	end=`date +%s`
+	runtime=$((end-start))
+
+	echo "Rendering image of ${stl}..."
+
+	if [[ "${FILE}" == "spiral" ]]; then
+		tmp=`mktemp`
+		fullPath=`realpath "${stl}"`
+		data="import(\"${fullPath}\");"
+		echo data > "${tmp}.scad"
+		openscad -o "$png" --imgsize=2048,2048 --colorscheme=DeepOcean "${tmp}.scad"
+	else
+		openscad -o "$png" --imgsize=2048,2048 --colorscheme=DeepOcean -D "PART=\"${FILE}\"" "${scad}"
+	fi
+}
+
+if [[ "${1}" != "" ]]; then
+	LOGGING=false
+	SIZE="${1}"
+	scad="./scad/${SIZE}_${V}/gnal_${SIZE}.scad"
+
+	mkdir -p "${DIST}/${SIZE}_${V}"
+	if [[ "${2}" != "" ]]; then
+		FILE="${2}"
+		render_part "${scad}" "${SIZE}" "${FILE}"
+	else 
+		for FILE in "${FILES[@]}"; do
+			render_part "${scad}" "${SIZE}" "${FILE}"
+		done
+	fi
+	exit 0
+fi
 
 echo "version,cpu,file,file_hash,file_size,source_hash,source_size,facets,volume,render_time" > $NOTES
 
 for SIZE in "${SIZES[@]}"
 do
 	:
-	mkdir -p "${DIST}/${SIZE}_${V}"
 	scad="./scad/${SIZE}_${V}/gnal_${SIZE}.scad"
 	srchash=`sha256sum "${scad}" | awk '{ print $1 }'`
 	srcsize=`wc -c < "${scad}"`
 	srcsize=`echo $srcsize | xargs`
+	
+	mkdir -p "${DIST}/${SIZE}_${V}"
 
-	for FILE in "${FILES[@]}"
-	do
-	   : 
-	    stl="${DIST}/${SIZE}_${V}/gnal_${SIZE}_${FILE}.stl"
-	    png="${IMG}/gnal_${SIZE}_${V}_${FILE}.png"
-	    echo "${scad} - ${FILE}"
-	    start=`date +%s`
-	    if [[ "${SIZE}" == "100ft" ]]; then
-	    	openscad -o "$stl" -D "PART=\"${FILE}\"" -D "FN=800" "${scad}"
-	    else
-	    	openscad -o "$stl" -D "PART=\"${FILE}\"" -D "FN=600" "${scad}"
-	    fi
-		
-		end=`date +%s`
-		runtime=$((end-start))
-
-		fileSize=`wc -c < "$stl"`
-		fileSize=`echo $fileSize | xargs`
-
-		if ! [ -x "$(command -v admesh)" ]; then
-			facets="N/A"
-			volume="N/A"
-		else
-			firstline=`head -n 1 "$stl"`
-			if [[ $firstline == solid* ]]; then
-				#convert from ascii to binary
-				admesh -c -b "$stl" "$stl"
-				newSize=`wc -c < "$stl"`
-				newSize=`echo $newSize | xargs`
-				percent=`echo "scale=1;($newSize/$fileSize)*100" | bc`
-				fileSize="${newSize}"
-				echo "Binary conversion created STL file ${percent}% of original"
-			fi
-			ao=`admesh -c "$stl"`
-			facets=`echo "$ao" | grep "Number of facets" | awk '{print $5}'`
-			volume=`echo "$ao" | grep "Number of parts"  | awk '{print $8}'`
-		fi
-
-		hash=`sha256sum "$stl" | awk '{ print $1 }'`
-
-		line="${VERSION},${CPU},$stl,$hash,$fileSize,$srchash,$srcsize,$facets,$volume,$runtime"
-		echo "$line" >> $NOTES
-		echo "$line"
-
-		echo "Rendering image of ${stl}..."
-
-		if [[ "${FILE}" == "spiral" ]]; then
-			tmp=`mktemp`
-			fullPath=`realpath "${stl}"`
-			data="import(\"${fullPath}\");"
-			echo data > "${tmp}.scad"
-			openscad -o "$png" --imgsize=1920,1080 --colorscheme=DeepOcean "${tmp}.scad"
-		else
-			openscad -o "$png" --imgsize=1920,1080 --colorscheme=DeepOcean -D "PART=\"${FILE}\"" "${scad}"
-		fi
+	for FILE in "${FILES[@]}"; do
+		render_part "${scad}" "${SIZE}" "${FILE}"
 	done
+
 	# add license to directories for zip
 	cp ./LICENSE.txt "./stl/${SIZE}_v3/"
 	# zip all