I concur. That was a very informative post, Doug. I've saved it. Susan Kline On 11/13/2010 8:16 AM, Paul McCloud wrote: > Doug: > Please write an article about all the glues you've researched, with pros > and cons for each. You could include all the successes and failures by > past experience. Why not resell those adhesives, especially those hard to > find ones. Might be able to realize some extra income, too. Sell them at > conventions, or ? > Anyhow, your information is very welcome. > Paul McCloud > San Diego > > >> [Original Message] >> From: Douglas Gregg<classicpianodoc at gmail.com> >> To:<pianotech at ptg.org> >> Date: 11/13/2010 7:41:31 AM >> Subject: Re: [pianotech] epoxy problems >> >> I have had an avid interest in adhesives since I did a term paper on >> them in advanced chemistry bach in 1962. Jeez that was a long time >> ago. My wife calls my passion the "adhesive of the month club". I >> have a few favorites. >> >> West System just came out with a very strong yet flexible epoxy that >> their techs could not even believe. It is G-Flex. It is a bit slow >> setting but great for things like rib repairs to soundboard or moving >> wooden parts under high stress. Usually strong adhesives that set slow >> and are strong are also brittle. Not this one. It has good penetration >> too. >> >> As stated before about the green piano bridge, I like JB Weld and >> Marine Tex black for high compression resistance, machinability and >> heat resistance up to 240degrees F. It can be used to repair an >> autoclave door flange. Very little creep but it is a bit thick and >> won't penetrate too well unless warmed up. >> >> I use Weldbond for all kinds of things. I carry a small bottle of it >> in my tuning kit. It looks and handles like Elmers white glue but is >> much, much better. It was designed to glue tiles on the space shuttle. >> It is great for wood. You can even glue wood to metal, glass, >> concrete, and plaster with it- or any of them to each other. It dries >> clear. >> >> An elastomeric that will stick to nearly everything including those >> molded high density polyethylene kids toys that resist any other glue >> including epoxy. It is the Welder. It works like a contact adhesive >> (rubber cement or Goop) but is stronger and will not yellow or >> become brittle like Goop. Great for gluing felt and leather. Fix your >> shoes with it too. >> >> Another that is a bit hard to find is a CA glue called PascoFix glue. >> It is anaerobic ultra pure medical grade CA glue. It can be used in >> dentistry. Anaerobic means that it sets quickly even without oxygen >> present, like tight fits, under water, inside the body, etc. It can >> glue where some CA glues fail miserably. It can even be used to glue >> rubber patches on tires. There is an accessory Pasco filling powder >> that can be piled up on a part to fill in a missing portion like a >> broken plastic part and then be polymerized with a drop of the >> PascoFix. This polymerized powder (now a very hard solid) is very >> strong, can then be machined back to any shape and be as strong or >> stronger than the original part. I think the powder is acrylic powder. >> This stuff is amazing. It has saved me a few times by reproducing a >> plastic part with missing portions that was otherwise unavailable. >> >> Happy gluing. >> >> Douglas Gregg BS, DVM, MEd, PhD, over-educated nerd >> Classic Piano Doc >> Southold, NY > > >
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