Abstract: An apparatus for aligning and clamping a workpiece is provided which includes an easel having a platform mounted thereon. The platform includes a plurality of blocks arranged in spaced relationship in a grid pattern with slots having tapered cross-sectional configurations therebetween. A pair of pneumatic rams are adapted for releasable mounting on the platform and for clamping a workpiece, such as a cabinet frame, while mechanical fasteners are driven into glue joints thereof.