THE SHOP LORE: THE FRANKENSTEIN LAPIDARY LINE

When Bob and Janyce first started bringing home hundreds of pounds of river rock, they needed machines that could actually handle shaping hard jasper and agate. Factory-made lapidary equipment costs thousands of dollars. The easy route would have been to say "we can't afford it" and walk away. Instead, they took the "T" off of "Can't," threw it on the workbench, and decided to build their own manufacturing line through pure trial, error, and scrounged parts. We don't buy cookie-cutter machines any more than we cut cookie-cutter shapes for traditional "ewlery" stores.

The 3450 RPM Cabber

If you look at our cabbing machine from the front, you might think it's just an old Columbia bench grinder held together by Lowe's tape. But the machine in the front isn't actually a grinder anymore—it doesn't even have a working motor. We gutted it and use it strictly as an arbor.

The real power comes from a massive, separate secondary motor bolted to the table right behind it. We rigged the two together with a custom drive belt that came straight off the generator of a 1964 International Scout 80. To keep the stone cool, we built custom splash guards out of repurposed Tupperware bowls, using Lowe's tape to create water flaps. Because of that massive rear motor, our Frankenstein cabber spins at a blistering 3450 RPMs. It is an absolute beast, and it is exactly what gave birth to our Freeform Revolution. You cannot cut factory-stamped shapes at 3450 RPMs—the speed forces your hands to listen to the stone.

🪨 The Rescue Loop: See the exact stones born from the 3,450 RPM friction of the Frankenstein Cabber. No factory shapes. Just pure, rescued Relics ready for a home.

The Banshee Flat Lap

About two months after we built the cabber, we needed a way to polish flat faces. I won't lie—I got the initial idea from a YouTube video, but our actual machine was born entirely from the scrap pile. Back in 1996, the same buddy who owned the '64 Scout gave me the original grinder for our cabber. Because it didn't have a power cord, he threw in a second backup motor just in case the first one was dead. That backup motor sat around for years until we needed a flat lap. We wired a cord to it, plugged it in, and realized we had another absolute beast on our hands.

The housing and water catch are a masterclass in scrounging: a white plastic bucket, a giant Tupperware bowl, and a red funnel, all glued together with "The Right Stuff" silicone. For the water feed, we took a 2 GPM sprinkler dripper, removed the valve to make a 90-degree elbow, and ran fish tank tubing to it, holding it exactly in place with an adjustable bailing-wire bracket. Today, it features a custom splash guard made out of a plastic walkway protector. We eventually wired it to a router controller just so we would have an on/off switch, but there is a catch: if you touch the variable speed dial at startup, the motor pulls so much power it instantly pops the fuse.

It cuts dead-true flats and polishes like a banshee, but it demands your respect. If you stand around and take a nap while grinding, it will eat right through the stone and leave you holding a much shorter wooden dop stick.

The Evolution of the Cooling System

Running two beast machines requires a massive amount of water to keep the stones from cracking and the diamond wheels from stripping. Getting that water right took a lot of trial and error. When we first built the cabber, our cooling system was literally a small pump "borrowed" from Janyce's decorative dolphin fountain sitting in a bucket on the table, catching the runoff in a baking cookie sheet underneath the machine.

When we built the flat lap two months later, things got complicated. A single bucket of water only lasted about 30 minutes, and we had to manually switch the water feed back and forth between the cabber and the lap. We upgraded the pump so we could recirculate the water, but we underestimated the heavy rock mud. That second pump quickly died from a complete "slurry overdose."

That failure led to our current masterpiece: Pump #3 and the Tidy Cats Triple-Settling System. We plumbed a massive pump into a tower of stacked Purina Tidy Cats litter buckets that now feeds both machines simultaneously. As the recirculating water cycles through the stacked buckets, the heavy rock mud naturally settles to the bottom. To catch the finer particles before they hit the pump, we use the ultimate piece of precision engineering: green kitchen scrubbies held in place by wooden clothespins.

Because the wheels spin so fast, we also add Dawn dish soap to the water supply to break the surface tension, helping the water cling tight to the diamond wheels. It runs incredibly well, and we only have to change the water every couple of months.

The Window Blind Dop Sticks & The Car Detailer's Secret

For the first year and a half of the Freeform Revolution, we didn't even use dop sticks. We were holding every single stone by hand against those 3450 RPM wheels. It was tough work, and the only reason Janyce wasn't cutting as many stones back then is that she was trying to protect her manicured fingernails by wearing oversized latex gloves while she worked!

Eventually, she decided to shorten her nails, and we finally bought our first dop station so we could mount the stones to sticks. But of course, we needed actual dop sticks. Instead of buying them, I looked around the shop, found some old plastic window blind adjuster wands, and chopped them up into perfect lengths.

But getting the stones mounted was another story. We kept hearing people complain that they couldn't keep their stones adhered to the wax while cutting. Even the folks at the local rock shop were telling people to just use superglue to force it to stick. But I used to detail cars, and I knew a secret. When you apply double-sided tape to car door trim, if the door and the trim aren't the exact same temperature, that trim is going to fall right off. I figured lapidary wax had to work the exact same way.

Instead of messing with superglue, I started setting the rough stone on the edge of the dop heater. I let the stone warm up until it was the exact same temperature as the melting dop wax. I stuck them together, and guess what? I haven't lost a single stone on the wheel since.

Our Pro-Tip for getting them off: Don't pry it. When you are done polishing, pop the whole dop stick in the freezer for 15 minutes. The extreme cold makes the wax brittle. Half the time, the stone will just fall right off in the freezer. If it doesn't, it pops off with a light tap. And while the wax is still frozen, you can just snap it right off the window blind wand, drop it back into the heater, and reuse it for the next rock.

The Universal Rescue

This entire lapidary line is a testament to the Universal Rescue. It is a collection of forgotten parts, old car engines, discarded litter buckets, window blind wands, and Tupperware that we pulled out of the scrap and gave a new purpose. That is the exact same energy we bring to every single stone we touch.

When you bypass the standard "ewlery" stores and adopt one of the Relics off our site, you aren't just making a purchase. You are taking home a piece of a 33-year partnership. You are wearing a stone that survived the 3450 RPMs of the Frankenstein Cabber and the Banshee Flat Lap. You are the final step in the rescue. Everything needs a home, and everything can be rescued if you care enough to put in the work.

Keep Exploring

🪨 Adopt a Rescue: Our lapidary line was built from scrap to rescue leftover stones. Browse All Collections →

📖 Read the Logbook: From blown motors to 58-pound boulders, read the raw history behind the Rockhound Studio bench. Read the Logbook →

Handcrafted by Bob and Janyce — Inspired by the "leftover can'ts".