Well, I made one.
I used a piece of plastic template and my iron like this...
https://www.google.ca/search?q=paper+piecing+iron&rls=com.microsoft:en-US:%7Breferrer:source%3F%7D&rlz=1I7GGHP_enCA464&biw=1680&bih=925&source=lnms&tbm=isch&sa=X&ved
=0ahUKEwi516Sj-dLLAhVqsoMKHeVjB6oQ_AUIBigB#imgrc=3xmcBWkD6UzCUM%3 A
I drew the pattern on the template, then inserted the tip of the hot iron into the plastic until it melted and drew it along the pattern. The iron is wide enough that it left a channel that I can (mostly) get the tip of my fabric marker in to mark my quilt. Doesn't look pretty, but it works quite well!
Watson