.35 air changes per hour. It takes, what, 15 minutes to drip CA into all the pins. That gives us time for .25 * .35 = 8.75% air change. Not enough for my lungs and eyes and nose sensor. I've CA'd one pinblock in a closed house in the winter and I'll never do it again. Paul in da (once again) frozen nort'land <div>On Wed, 04 Apr 2007 18:07:24, Don <<a href="mailto:pianotuna@accesscomm.ca">pianotuna@accesscomm.ca </a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi Rex, Yes odorless CA exists. I don't use it so I can't offer a source of supply. All houses are recommended to have at least .35 air changes per hour--so a build up of fumes is not likely. "The American Society of Heating, Refrigeration and Air-Conditioning Engineering (ASHRAE exiting epa  recommends (in its Standard 62-1999, "Ventilation for Acceptable Indoor Air Quality") that homes receive .35 air changes per hour, but not less than 15 cubic feet per minute (cfm) per person. A common rule of thumb is the 15 cfm multiplied by number of bedrooms in the house plus one. For example, a 3 bedroom house would require at least 60 cfm of outdoor air. [(3 bedrooms + 1) x 15 cfm = 60 cfm]. Kitchens should have an intermittent exhaust capacity of 100 cfm; bathrooms an intermittent capacity of 50 cfm. (ASHRAE also notes that "dwellings with tight enclosures may require supplemental ventilation supply for fuel-burning appliances, including fireplaces and mechanically exhausted appliances. See information on combustion appliances.)" <a href="http://www.epa.gov/iaq/homes/hip-ventilation.html">http://www.epa.gov/iaq/homes/hip-ventilation.html</a> For bridge cracks it may be best to treat the wood with the water thin variety first to seal it--then follow up with medium or even thick. Be prepared to make more than one application. At 09:46 AM 4/4/2007 -0400, you wrote: >        Dear List     I have two questions regarding CA glue.     1. I seem >to remember odorless CA glue being talked about on the list, but I was not >able to find a reference to a source. Does anyone know if it actually >exists and where it can be purchased?     I have a piano that needs a >treatment on the tuning pins, but is in one of the new houses in this area >that are sealed for energy conservation. Would the regular CA fumes cause a >problem in a house where it may not be possible to get much outside >ventilation?     2. When using CA glue on the bridge, is it necessary to >remove the strings before applications? Does the CA have enough gap filling >property to fill small cracks and gaps, or does it just solidify the area >around the pin?     Thanks     Rex Roseman Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. Non calor sed umor est qui nobis incommodat mailto:<a href="mailto:pianotuna@yahoo.com">pianotuna@yahoo.com </a>      <a href="http://us.geocities.com/drpt1948/">http://us.geocities.com/drpt1948/</a> 3004 Grant Rd. REGINA, SK, S4S 5G7 306-539-0716 or 1-888-29t-uner </blockquote></div>