Hello list. I thenks the help of Barrie Heaton, Newton Hunt and Suzan Kline and I have a new ! Today I make some experiences using on the butt some differnts materials. Plastick ( this is yhe same Plastic Brazil), Araldite and an acrylic used by prosthodontist in order to make denture. This material is a powder ( white or pink) that you mixture with a catalyzer. In 5 or 6 minutes it will be very hard. There are very much time I use it soldering wood parts, etc, etc. The acrylic it seems to be the best. The second better was Plastick. I thanks the help because on Rio, where you may find hot time ( today we are with 90 F ) we find sonme pianos with butt plates problem. Rogerio Cunha - IC Member of the Guild - Rio - Brasil -----Mensagem original----- De: Barrie Heaton <Piano@forte.airtime.co.uk> Para: pianotech@ptg.org <pianotech@ptg.org> Data: Quinta-feira, 29 de Janeiro de 1998 23:52 Assunto: Re: Butt plates >That is the stuff, I use Car Body filler, you all ways run out of >catalyzer befor the putty. It is the same stuff as Plastick wood. > >Do about five at a time, any more and the padding is too hard to work >with. I use five old butt plates so it is OK if I get some padding on >them. I use a half size down pin from the one I will re-centre with. > >Araldite is Ok but it is a bit tacky for this job. > >A tip for Araldite, if you have some hair line cracks on bridges mix >some Araldite on a tin lid with a small hole in it, use a mach and heat >up the Araldite it get very runny. Let it poor out of the little hole >in to the cracks. > > >Barrie, > > >In article <01bd2cf1$b8fef8e0$5b1cf0c8@default>, ROGERIO OLIVEIRA DA >CUNHA <rogeriocunha@openlink.com.br> writes >>Hello Barrie. I thanks your information about butt plates. I would like to >>do an experience with the option 2 but I need more information about PLASTIC >>PADDIN in order to find here in Brasil something like it. We have a product >>called PLASTIC and it is a plastic dough or paste that you mixture it with a >>catalyzer and in few minutes it becomes a very hard material and you may use >>it to repair plastics, woods, cars, etc because it have a great adherence. >>Another product is ARALDITE and it is two doughs in different colors and you >>mixture the two in order to obtain a product that in 2 hours is hard. Can >>you help me? Thanks. >>Rogerio Cunha - IC Member of the PTG - Rio - Brasil >>-----Mensagem original----- >>De: Barrie Heaton <Piano@forte.airtime.co.uk> >>Para: pianotech@ptg.org <pianotech@ptg.org> >>Data: Quarta-feira, 28 de Janeiro de 1998 21:31 >>Assunto: Re: Butt plates >> >> >>>I have three methods. >>> >>>1. On the job quick fix. I hve some dymo tape not so sure if that is >>>the name for it in the states, its the quarter inch sticky back fairly >>>hard plastic, I cut that in to a thin strip nd stick it over the slot >>>put the but plate back on tighten up screw, it works most of the time. >>> >>>2. Workshop I drill a little hole in the centre of the groove with a >>>little needle drill, fill groove with plastic paddin, plade a greased >>>centre pin in groove and tighten up but plate allow to set then trim off >>>the over spill at sides. This works quite well, the little hole is just >>>an anchor point. You put the grease on the pin just a little to stop it >>>from bonding to the plastic wood. >>> >>>3. if all fails change the buts. >>> >>>The bigest problem I have with them is with older pianos where >>>technicians have over tightened the screw and split the but. >>> >>> >>>Hope this is of some help. >>> >>>Kind regards, >>> >>>Barrie. >>> >>> >>>In article <01bd2c1f$ec438c20$0100007f@localhost>, ROGERIO OLIVEIRA DA >>>CUNHA <rogeriocunha@openlink.com.br> writes >>>>Tp the list. >>>>There is no doubt that 90% of pianos have butt plates, but all the books >>such as >>>>Reblitz, the Guild's PACE series, the Guild reprints of articles, etc, say >>>>nothing about problems with utt plates. >>>>Manufacturing action parts from unseasoned wood causes a bad problem. When >>the >>>>wood dries completely the hammer wobbles from side to side because the >>groove in >>>>the butt is greater than the diameter of the center pin. >>>>The first thing that you try is replacing the center pin ! Sometimes you >>use >>>>size 25 or size 26 center pins and the problem is still there. Other times >>you >>>>see that the bushing cloth is all right and you ask, "Why ream or burnish >>the >>>>bushing cloth if it is very good and the center pin is the right size? >>>>This is the question ==> WHAT IS A BETTER THING TO DO AND HOW TO DO IT? >>>>Thanks >>>>Rogerio Cunha - IC Member of the Guild - Rio - Brasil. >>> >>> >>> >>> >>> >>>-- >>> >>>Barrie Heaton | Be Environmentally >>Friendly >>>URL: http://www.airtime.co.uk/forte/piano.htm | To Your Neighbour >>>The UK PIano Page | >>>pgp key on request | HAVE YOUR PIANO TUNED >>> >> >> > > > > > >-- > >Barrie Heaton | Be Environmentally Friendly >URL: http://www.airtime.co.uk/forte/piano.htm | To Your Neighbour >The UK PIano Page | >pgp key on request | HAVE YOUR PIANO TUNED >
This PTG archive page provided courtesy of Moy Piano Service, LLC