A razor blade holder assembly having a body, a movable jaw and an adjustment member. The body has a fixed jaw with a support face and an adjustor channel. The movable jaw assembly has a plate member and a releasable securement subassembly. The plate member is over the adjustor channel and the support face. The releasable securement subassembly couples the plate member to the body and applies a biasing force against the plate member toward the support face. The adjustment member has an elongated rod member rotatably within the adjustor channel, a forcing surface is selectively rotatable into the plate member to direct the plate member away from the support face. In a clamped configuration, the plate member clamps a razor blade. In an open configuration, the forcing surface of the elongated rod member overcomes the biasing member to separate the plate member from the support face.