[johnnycab]

If I remember correctly, the three machines were sold off to different buyers. Regardless, it is probably far too early to be revived, even under the guise of nostalgia and perhaps too niche a product, say, compared to the Impossible project. Although not the same, there are alternatives available:

https://www.jetpens.com/Rikagaku-Dustless-Chalk-Accessories/...