The story starts with a frustrated engineering team. They were designing a magnetic assembly that required arc-shaped pieces—but their supplier said, “It’ll take 6 weeks and cost 3 times more than regular blocks.”
They didn’t have 6 weeks. They had two. And that’s how they ended up calling us.
Why Custom Magnet Shapes Are So Hard to Source
Most magnet suppliers stock basic shapes:
- Rectangular blocks
- Round discs
- Simple tiles
But many applications need more than that:
- Arc segments for high-efficiency motors
- Beveled plates for sensor arrays
- Wedges and trapezoids for Halbach arrays
- Hollow cylinders for rotating assemblies
- Curved slices for MRI coils or speaker rings
Manufacturing these in small batches is tricky, especially with brittle materials like sintered NdFeB or SmCo. Tooling cost is high. Scrap rate is higher. Lead times are painful.
The Turning Point: Cutting In-House with SGI20
This client decided they’d rather take control than wait for expensive custom parts. They got in touch after reading about SGI20, our CNC diamond cable saw.
They sent us a sample drawing—an arc with a 76 mm outer diameter, 3 mm thickness, and a 15° segment angle. Our engineers ran the cut, recorded the process, and sent back a video.
They replied: “That’s exactly what we need. Can we order two units?”
Why SGI20 Made the Difference
SGI20 uses a 3-axis CNC control system, meaning it can:
- Cut straight and angled faces
- Execute radial and arc paths
- Perform step cuts, bevels, and compound shapes
With precision down to ±0.03 mm and a kerf of just 0.35 mm, they could:
- Cut multiple segments from a single block
- Reduce post-processing to almost zero
- Eliminate long waits for outsourced shapes
Best of all? No fixtures had to be changed between shapes—they just loaded a new CAD path and pressed start.
Real Results After 3 months with the SGI20:
- Their team cut 5+ unique shapes for different client projects
- Scrap dropped by 60%
- Quoting time for custom magnet jobs fell from days to hours
- They began offering cutting as a service to smaller suppliers nearby
Why CNC Magnet Cutting Is the Future
CNC magnet cutting isn’t just a tool—it’s leverage.
- Faster prototyping
- Control over IP and geometry
- Reduced dependency on hard-to-find vendors
- Flexibility to try new magnetic designs without committing to molds or tooling
Whether you’re shaping arcs, making magnet rings, or slicing 1 mm wafers from rare earth ingots, SGI20 gives you the control to do it right.
Some companies wait weeks for custom magnets. Others cut them themselves.
If you’re tired of delays, constraints, and inflated prices, CNC magnet cutting might be your way forward. And SGI20? It’s already helping companies like yours slice smarter.
Want to see what it can do? Let’s run your drawing.
