"every inch of every blueprint this shop produces is prayed over fervently..." Really? What if God is only into pipe organs? I would think giving thanks for my skills and the work that I'm able to do would be sufficient. David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: "William Truitt" <surfdog at metrocast.net> To: pianotech at ptg.org Received: 6/2/2009 2:47:27 PM Subject: Re: [pianotech] Piano Built completely in Virginia-pics >Hi Mark: > >I'm from the eastern shore of Maryland originally, hence my remarks about >the bay. It's been way too long since I have had any decent crab cakes. > >Thanks for the further information. You are a better man than I, you chased >your muse pretty far! How much do you think the added rigidity of this >plate adds to the sustain ? > >If you have other pictures of the plate construction, particularly in >process, I am sure there are many of us who would further enjoy seeing your >act of creation. > >Regards, > >Will > >From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf >Of perrys piano restorations >Sent: Sunday, May 31, 2009 9:20 PM >To: pianotech at ptg.org >Subject: Re: [pianotech] Piano Built completely in Virginia-pics > >Hello Will, > >yes the chesapeake bay is 'tasted for resin. (probably). Anywho, to >answer some more about the plate, the term "stacked weldment" means that I >layered the steel. The material I used is 10ga (0.135" thick). The >thickness of the plate is a VERY varied question. In order not to twist at >the back, the plate is 3/4" thick as if it were formed in cast.... but >layered and spaced appropriately. The front of the plate incorporates >similar features of a modern cast plate. IE: it would be a terrible thing >for a plate to bow down onto the action like many victorian plates, so the >thickness here resembles 3"....... but not really. That 3" is from the top >strut level, to the gusset at the bottom of the pinblock. If the placement >of various components is void, or irregular, or incorrect, problems will >show up quickly under load and the instrument is all for not. this plate >took me 574 hours to draw before I released it to the shop for fabrication. >Incedentally, every string was laid out on paper prior to release as well. >You have to even account for the vibrations possible between an overstrung >bass string, and one of the wire strings it passes over. THEY BETTER CLEAR >EACH OTHER NO MATTER WHAT or you lose much sleep. > >Now, as for the carbon fiber, A.H.S.S. is hot rolled in manganese and carbon >at the steel mill. The bonded carbon fiber layers are clad in fiberglass to >prevent natural galvanic corrosion (carbon is conductive and static can >cause rust between dis-similar "metals")....The bonded carbon fiber panels >are pressed up in my shop, and the steel is cut down the road on a water-jet >to my .dxf files. Welding is done in a manner to even stresses in the >steel, and aid the solid tabbed joints. Welds are not necessary for >strength, but they do increase the strength. A Deadening effect is REQUIRED >for the plate to be inert to tone, so we took whatever steps necessary in >the weld shop to obtain this too. > >I promise you, this plate is ELABORATELY complicated. It would easily make >more sense to cast plates, but saving 300lbs, and offering a crack-resistant >design seemed worth it to me. As for the looks, I dare anyone to show me >how it does not look cast. sheet metal was always one of my strengths, and >every inch of every blueprint this shop produces is prayed over fervently. >The plate works well, and is much stiffer and straighter than cast plates. > >hope this is helpful. >God Bless, >Mark > > _____ >From: surfdog at metrocast.net >To: pianotech at ptg.org >Date: Thu, 28 May 2009 18:20:12 -0400 >Subject: Re: [pianotech] Piano Built completely in Virginia-pics >Very impressive, Perry. > >Is that Chesapeake Bay tested for the resin? > >As for the steel plate bonded with carbon fiber panels, could you describe >that a bit more? Is that a sandwich with the carbon fiber on top and bottom >with the steel in the middle? How thick is the plate overall, and how >thick each of the components? Anything else you wish to share about it? > >Will Truitt > >From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf >Of perrys piano restorations >Sent: Thursday, May 28, 2009 5:45 PM >To: pianotech at ptg.org >Subject: Re: [pianotech] Piano Built completely in Virginia-pics > >Thanks for the inquiry... I hope to have audio soon! I am scheduled to hire >a recording studio to set up and cut a cd in a couple of months. As for the >plate, what a project this was! It is a stacked weldment of advanced high >strength steel, bonded with carbon fiber panels, and a flexible resin matrix >to hold the decorative carving on. The flexible resin is time tested >succesfully in salt water for over 55 years. This plate will not absorb >near the flexing, and this is expected to last almost 200 years. (I'll be >gone by then). anyway, it comes in at 1/3 the weight of a standard 9' >plate, with higher stiffness, and nearly the exact yield strength. Fatigue >properties will also be good on this design. All fitted steel parts are >tabbed and notched to mechanically fit together prior to welding, so that >stress is not on welds, but shear strength of the steel itself. It took my >shop over 1,000 hours to produce this plate. > >I will release more information at some point soon. > >God Bless, >Mark PErry > > _____ >Date: Wed, 27 May 2009 21:35:07 -0500 >From: formsma at gmail.com >To: pianotech at ptg.org >Subject: Re: [pianotech] Piano Built completely in Virginia-pics >Enjoyed looking at the pictures, Mark. > >You have audio? > >I'd like to hear more about the plate, if you have time. > >-- >JF > > >On Wed, May 27, 2009 at 6:27 PM, perrys piano restorations ><perrymark at hotmail.com> wrote: >Hello All, > >I thought I would take a few moments to update everyone on the piano my shop >is building from scratch! The pictures show a general shot of the case >before we shaped the front, the decal which is hand gilt in 24kt gold, the >piano plate (not cast iron, rather, advanced high strength steel weldment >made down the road from my shop), the under-side of the piano. > >To re-cap quickly, the underside shows primative art from the catacombs of >Rome, with a grape vine pattern interconnecting it all. The Plate has >passion flowers, angels, and a scroll from the book of revelation. The hand >gilt decal is layered gold leaf, and show a boy sitting with a lion, lamb, >etc.... and the holy spirit above with two angels. The inside of the rim is >olive wood from the middle east, and the outside is amboyna burl. (not as >red in real life.) > >the finish is french polish, in which we used frankinsense and muhr as an >addative to the shellac. We used holy oil from Jerusalem to lubricate our >rubbing pads, and to finalize, the keys are wooly mamoth ivory on spanish >cedar keys. Also made here, along with the entire action. We offer ivory >work to the industry as a side note. the piano is called "the passionata", >which means the passion. (the passion of Christ) . The nameboard is inlaid >birdseye maple , with the letters inlaid out of amboyna, and perfled in >ebony wood. outward art is 24kt gold. > >Enjoy the pics. >God bless, >Mark Perry >www.carvedpianoparts.com <http://www.carvedpianoparts.com/> > > _____ >HotmailR has a new way to see what's up with your friends. Check ><http://windowslive.com/Tutorial/Hotmail/WhatsNew?ocid=TXT_TAGLM_WL_HM_Tu >tor >ial_WhatsNew1_052009> it out. >-- >JF > > _____ >HotmailR has ever-growing storage! Don't worry about storage limits. Check ><http://windowslive.com/Tutorial/Hotmail/Storage?ocid=TXT_TAGLM_WL_HM_Tutori >al_Storage1_052009> it out. > > _____ >HotmailR goes with you. Get it on your BlackBerry or iPhone. ><http://windowslive.com/Tutorial/Hotmail/Mobile?ocid=TXT_TAGLM_WL_HM_Tutoria >l_Mobile1_052009>
This PTG archive page provided courtesy of Moy Piano Service, LLC