Cutting Obsidian, tons of fun...not lol

Okay, so you've got some raw obsidian and you're thinking about putting it in your rock tumbler. My first thought was, "Can you cut obsidian easily?" The answer is yes, but it's definitely an experience, and not always the "tons of fun" kind, as I quickly found out! If you're wondering how to cut obsidian safely and effectively for tumbling, let me share what I learned from my own messy journey. First off, cutting obsidian is a job for a proper lapidary saw – preferably one with a diamond blade and a water cooling system. Trust me, you don't want to try this with just any old saw. Obsidian is essentially volcanic glass, and when you cut it, it behaves like glass. This means those sharp, tiny glass shards going all over the place are a real thing. Eye protection is non-negotiable; safety glasses or, even better, a full face shield. I also wore sturdy gloves and a long-sleeved shirt because those little fragments can fly surprisingly far and sting a bit! The main reason I decided to cut my obsidian was to break down larger pieces into smaller, more manageable sizes for the tumbler and to remove any obvious cracks or undesirable sections. This way, the tumbler can work its magic more efficiently, and you end up with better-shaped, polished stones. I wanted to get rid of some rough edges and create a smoother starting point for the tumbling process. When I first started, I thought, "Cutting Obsidian, so fun!" It felt exciting to shape the raw stone. But then, as the blade bit into the obsidian, the reality hit. The spray from the saw wasn't just water; it was water mixed with abrasive obsidian dust and tiny, razor-sharp shards. It really felt like *glass shards going all over the place lol*, even with precautions! Keeping the workspace clean and well-ventilated is super important. I quickly learned to take my time, let the saw do the work, and not force the stone through the blade. Rushing leads to more chipping and more dangerous fragments. After successfully cutting my obsidian into smaller pieces, the next step is crucial for how to tumble obsidian effectively. You want your pieces to be relatively similar in size and free of any super sharp edges that could damage other stones in the tumbler. I usually give them a quick inspection and sometimes a little pre-tumble in coarser grit to smooth out the fresh cut edges before going into the main tumbling stages. The goal is to get nicely rounded shapes that will polish up beautifully. It's a lot of work from start to finish, but seeing those shiny, polished obsidian pieces come out of the tumbler makes all the safety gear, the messy cleanup, and the careful obsidian cutting totally worth it. It's a true labor of love for any rock hounding enthusiast!