Corrections! I just noticed that I did not list DMC 80 wt tatting thread as an option for use with size 12 needles. You can use this thread with size 12 or size 14 needles, at 12 stitches per inch.
Personally, I rarely use tatting thread for machine embroidery, but many of my students love the way the thicker threads look, they feel it looks more like "hand-made" stitches, so I do feature it in the tutorial.
Also, if you have an "industrial" Willcox & Gibbs chain stitch sewing machine you may be able to do even less than 12 stitches per inch, and experiment with thicker threads and bigger needles. If you do try thicker threads, you may need to also use thicker fabrics and/or heavy stabilizers.
If you choose to use a stabilizer, use either a water soluble, or a leave in stabilizer. Many people who have tried tear aways, have found that the tearing process sometimes pulls the stitches out.