Get a list of svg files and convert them to prepared scad designs. You'l than have to modify only the size.

svgto3d

#!/usr/bin/env bash
# Public domain

if [ $# -lt 1 ]; then
	echo "Give me some file(s), dude!" 1>&2
	exit 1
fi

for svg in $@; do
	shortname="$(basename "$svg")"
	extension="${svg##*.}"
	filename="${svg%.*}"
	if [ "x${extension,,}" != "xsvg" ]; then
		echo "$svg has no .svg extension, I won't use it." 1>&2
		continue
	fi
	inkscape -E "${filename}".{eps,svg} || exit 1
	pstoedit -dt -f dxf:-polyaslines "${filename}".{eps,dxf} || exit 1
	if [ -f "${filename}.scad" ]; then
		echo "Not going to overwrite ${filename}.scad, sorry." 1>&2
		continue
	fi
	echo "scale(1) linear_extrude(height=1) import(\"${shortname%.*}.dxf\");" > "${filename}.scad"
done