On the dovetail fixtures, the clamp area looks small. How big can the workpiece be?
On the detail page of each Dovetail Fixture, refer to the "Description" tab. Raptor has listed the typical workpiece size range from minimum to maximum. Also take into consideration the maximum workpiece weight, which is listed as well.
Raptors' dovetail fixture design of the small clamping area allows for increased accessibility & clearance to five sides of a workpiece. This allows for the workpiece to overhang the fixture.
All clamps are made with 17-4 stainless steel. The combination of the spring-loaded clamps with the dovetail design enhances the holding strength, prevents chatter and gives greater flexibility in operations. How it works: When tightening the clamps, they will engage with the the angles of the dovetail prepped workpiece, causing the workpiece to pull downward into the radius of the opposing solid shoulder. Super strength.