We have the privilege of viewing many action-packed videos from innovators showing what their new creations are all about, while in the moment. Seeing technique mixed with the drama and excitement of what these artists love to do is certainly refreshing, whether they are coming from snowy peaks, crashing ocean waves, or even fire, which Jeshua Lacock seems to be quite fond of using in his endeavors.

When we last caught up with the founder of 3DTOPO, based in Boise, he was still refining his Lost PLA Casting process and working on his giant glass 3D printer. More than your average DIYer or handy-around-the-house kind of guy, if something breaks on a machine, he just makes a new part—even if it’s metal. But when you watch the processes involved, you can see why not everybody is doing this in their workshop.

Being self-sustainable can be some complex business, but it’s obvious that this comes quite easily to someone like Lacock, and thankfully he shares his techniques with anyone else who is interested in such processes. Recently, Lacock took some time out to share his newest method with us—and it’s probably unlike anything you’ve ever seen. He’s named it the 3D Printed Lost Shell Sand Casting technique, and I can’t figure out if the process or the results are more exciting, but if you’re interested in casting in metal, this is definitely worth having a look at.

“As far as I know, the technique is new to the world,” Lacock recently told 3DPrint.com.

Stating he received numerous comments that his Lost PLA Casting technique looked ‘like too much work,’ Lacock decided to try something different with his new technique, casting in copper. (Note: There is brief shop talk/profanity in the video.)

Read more: New 3D Printed Lost Shell Sand Casting Technique Offers Fine Detail in Metal