Hi Marco The blocks I make are constructed of hand pick & processed quarter sawn maple except the top which is a 6 mm layer of null to act as flagpole control. Yamaha has done this for years. I think Forever The bottom is 6 mm of Maple. The first layer under the delignit orients the grain front to back. The next is end to end, The next layer front to back & of course the bottom piece end to end. It is similar to other quarter sawn maple blocks on the market of this type as far grain orientation except the top layer. The delignit is very hard & dense & keeps the pin from wandering forward over time and leaning against the plate flange as is seen in so many old Steinways & others. I think it also aids in smoothness of tuning. I drill these blocks at usually at .257 for a no. 2 --2 & 3/8 inch diamond brand pin & on occasion drill at .255 for a slightly tighter fit when the piano is going to extreme climate. For example Neveda...very dry. Another way to insure a tighter fit is to use a slightly longer pin. I suggest the 2 1/2 inch pin when the plate flange is especially thick Of Course the layers can be altered slightly to get to the 38 mm dimension you describe or any dimension. The three middle layers are usually 8 to 9 mm. After using a dozen or more of these blocks the results are what I hoped for. A block that tunes as easily as Yamaha or an old un touched original California preserved maple Steinway block. Like butter. I find a piano that has a difficult block is a piano that spends more of it life out of tune. The pins are more difficult to set & probably none of us enjoy tuning that type of instrument. We now offer this custom made pinblocks to the trade. Sincerely Dale Erwin Hi Dale, I like that very much… Just a question …two really… How many lamination for pinblock 38mm thick, and how thick each lamina? The direction of the grain it’s strait or you give different orientation? All the best my friend Ciao Marco De Lellis Piano Workshop Inc. PTG - Registered Piano Technician 21-05 31st. Avenue Astoria New York, 11106 USA tel. 001 212 575 4949 tel. 001 718 956 3110 www.pianoworkshopny.com info at pianoworkshopny.com From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of erwinspiano at aol.com Sent: Thursday, November 27, 2008 1:44 PM To: pianotech at ptg.org; Erwinspiano at aol.com Subject: [pianotech] The Erwin Pinblock & multiuse glue up deck Happy Thanksgiving all It's finally pressurized Keith Roberts & I got finally manage to assemble the long awaited pinblock press and all purpose glue up deck to the working state. The jig will now make quick work of gluing up double panels 5 ply Custom maple pinblocks. The plethora of other uses I'm sure will20evolve over time but a couple that come to mind may be, gluing on bridge caps without using every steel clamp in the shop or laminating all kinds of stuff or perhaps gluing the bridge to a new soundboard if it's not too long. The deck is 5 ft long & 2 ft wide. The rolling steel table was purchased at a garage sale for 20 bucks. Loved that! The upper deck is heavy gauge steel re-fabricated- from a prior soundboard screw press. The laminated butcher block bed came from the estate of my friend the late Carl Meyer, S.F. bay area piano tech & resident inventor of all kinds of fascinating things. I need to attacch some pneumatic lifts at each of the four corners to hoist the top bed. It's very heavy. Where does one get something like this? I need a travel distance of approx. 2 ft. Dale Erwin Tis the season to save your money! Get the new AOL Holiday Toolbar for money saving offers and gift ideas. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20081127/5f34fe24/attachment.html>
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