Hey
None yet. But I am talking with Sharebot about developing one for the Materia.
If it's possible we will try and do it without changing the PSU (powersupply).
Thank you for posting this. Now we know that people want this.
ps. Have you tried blue painters tape instead of hairspray? If you keep it clean the PLA really sticks to it. Also keep the first layer hotter than the rest. maybe 5 c higher.