Instructional Pamphlets - free pdf downloads Efficient Key Rebushing   Complete instructions on the two caul method of rebushing, as well as tips applicable to all methods. Covers removal of old bushings, improving key mortises, glues, making your own hot hide glue pot, cutting your own cloth from bulk and more, 6 pages. Click here to download pdf. For additional instructions click on our Tech Tips link and our FAQ page. Grand Action Let-off Jig Single page instructions that were originally included with jig, click here to download pdf. Jig now discontinued. Grand Action Touchweight  This 9 pg. pamphlet covers the basics of upweight, downweight, friction, and inertia, diagnosing friction and weight problems, choosing appropriate replacement hammers, and reweighting a keyboard. This updated version includes information on action geometry including a simple method of determining Action Ratio with two simple measurements that allows you to control and predict inertia characteristics of actions. Originally included with our Gram Weight Set, click here to download pdf. Weight set is now discontinued. Grand Hammers - boring, tail shaping, and installation Covers selection of hammers, choosing boring dimensions, tail shaping and tapering, weight removal to match light-weight originals, thinning treble shanks, and hammer installation using our Grand Hammer Hanging Jig. Includes plans for several simple jigs and fixtures. 10 pages. Included with purchase of the jig,  or click here to download pdf. Router Repair of Soundboard Cracks  Step-by-step instructions for repair of soundboard cracks using our Soundboard Router Bit and Router Base. Covers drying the board, repair of loose glue joints, routing of cracks, making soundboard shims, shim installation and final finishing. 10 pages. Included with purchase of the bit or base, or click here to download pdf. Using the Damper Underlever Setting Jig Single page instructions included with jig, or click here to download pdf. Using the Grand Hammer Tail Arcing Jig These three page instructions provide a detailed discussion and drawings of all factors involved in hammer checking, including tail length, backcheck height, backcheck angle, tail arc and tail texture. Included with purchase of jig or click here to download pdf. Using the Hammer Tapering Jig These three page instructions with diagrams cover use of our hammer tapering jig. Included with purchase of jig, or click here to download pdf. Vertical Damper Replacement  This nine page pamphlet presents step by step methods for diagnosing damper problems, re- designing dampers to improve poor damping common in the bass and tenor, a unique method of pre- adjusting damper heads prior to installation of new damper felt, and simplified methods of damper head and spoon regulation. Click here to download pdf. Vertical Hammer Replacement Covers selection of hammers, choosing boring dimensions, refurbishing & replacement of hammer butts, and two methods of hammer installation. 7 pages. Click here to download pdf. Jig now discontinued. Vertical Regulation This nine page pamphlet emphasizes regulating for proper action function, rather than blindly following a set of measurements. Includes diagrams of several time saving jigs and tool modifications to improve the efficiency and speed of regulation steps. Click here to download pdf.