Tool with selectively-biased member having an adjustment feature

A tool system for working a workpiece, the tool system comprising:

• (a) a tool, comprising:
• (i) a central axis which defines axial, angular, and radial directions,
• (ii) at least one blade member including a blade configured to remove material from a workpiece, said at least one blade member being substantially constrained in the axial and angular directions, said at least one blade member being configured to move through a range of travel in the radial direction, and
• (iii) at least one inserted member positioned in line with the central axis adjacent said at least one blade member, wherein the inserted member is operable to direct a pressurized fluid to selectively bias the at least one blade member in the radial direction to at least one of a plurality of alternative use positions, wherein the inserted member comprises an adjustment device, wherein the adjustment device is operable to selectively adjust one or both of the flow rate or pressure of the pressurized fluid to selectively bias the at least one blade member;
• (b) a rotary actuation device configured to drive the tool to rotate about its central axis;
• and
• (c) a pressurized fluid supply in fluid communication with the at least one inserted member for providing the pressurized fluid to selectively bias the at least one blade member in the radial direction to at least one of a plurality of alternative use positions.

A tool, comprising an elongate member, the elongate member comprising:

• (a) first and second ends positioned on a tool axis, the second end being configured to couple with a rotary actuation device;
• (b) a conduit in fluid communication with the second end and the first end;
• (c) one or more cutting members located proximate to the first end, each of the one or more cutting members being positioned at a respective first distance from said tool axis;
• (d) a plate positioned proximate to the first end, the plate comprising two sides, each of said two sides having at least one opening formed therein, each opening being configured to receive a fluid medium from the conduit, wherein said plate is configured to divert flow of the fluid medium to cause at least one of said one or more cutting members to be positioned at a second distance from said tool axis;
• and
• (e) a fluid adjustment member, wherein the fluid adjustment member is operable to selectively adjust the flow rate or pressure of fluid diverted to cause at least one of said one or more cutting members to be positioned at the second distance from said tool axis.