Why add a fourth axis rotary table to your CNC router? - YouTube
4th Axis (DWC1824) — Digital Wood Carver
4th Axis Rotary Table - CNC Masters
4' x 8' CNC Router With Rotary 4th Axis at Grizzly.com
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RATTMMOTOR K12-65mm Type Divding Head with 54mm Tailstock, Reducing Ratio 4:1 CNC 4th-Axis A-Axis Rotation-Axis, Indexing Head+K02-63mm 4 Jaw Chuck+Nema17 Stepper Motor for CNC Router Engraver Machine - Amazon.com
Rotary 4th Axis K11-65mm 3-jaw chuck for CNC Router Engraving Machine Ratio 4:1 | eBay