Adjustable holding systems

An adjustable holding system comprising:

• an L-shaped base adapted for use on a work surface and having a substantially horizontal portion integral with a substantially vertical portion, the vertical portion having a front surface adapted and arranged to be adjacent to a workpiece side, the horizontal portion comprising an opening spaced away from the front surface;
• and
• a guide assembly removably securable to the vertical portion of the base, wherein the guide assembly has infinite vertical adjustability with respect to the vertical portion of the base which can be adjusted vertically without use of an element located between the horizontal portion of the base and guide assembly;
• and
• a clamp assembly having a clamp follower adapted and arranged to be movably positioned within at least a portion of the base horizontal portion opening and proximate to another workpiece side opposite to the workpiece side adjacent to the front surface, and the clamp assembly having a spring operatively coupled to the clamp follower to accommodate variations in workpiece thickness when the clamp follower is in a clamped position with respect to the workpiece.

An adjustable holding system comprising:

• an L-shaped fixed base adapted for use on a work surface and having a substantially horizontal portion integral with a substantially vertical portion;
• and
• a portable base securable to the work surface and having a portable base opening defined by a back surface, two side surfaces, and a partial front surface;
• and
• a guide assembly removably securable adjacent to one of the fixed and the portable base, wherein the guide assembly has a surface adapted and arranged to be adjacent to a workpiece side and has infinite adjustability with respect to either base while being interlocked with the base whereby a location for drilling a hole in the workpiece side can be predetermined by adjusting a position of the guide assembly with respect to the adjacent base.