I enjoyed Mr. Woods' comments. Years ago when Resorcinol was the FAA standard for aircraft wood glues I came up with a formula that was widely used until 1:1 ratio T88 came on the scene. Hughes in Detroit worked with me to come up with FPL 16A. Essentially formula FPL 16 (Forest Products Laboratory) was modified by addition of more MEK to improve penetration. The end ratio was 10:1. The whole story was reported in Sport Aviation in the October 1967 issue.
The formula broke wood in all tests. Many homebuilders at the time praised the product. However, two FPL16A drawbacks; the 10:1 mixing ratio and hazardous DETA curing agent were found to be too critical for the typical homebuilder opening the door for 1:1 T88.. In view of the above I would encourage anyone using 1:1 ratio T88 to consider some tests with 5 percent addition of MEK to increase penetration. Mick Myal EAA 7978 Tucson AZ m...@dcn2.net Harold Woods wrote: >Hi Netters, >There is only one way to thin a thick epoxy properly. You must purchase a >"reactive dilutant". It is a substance that has properties like epoxy, in >that it will react with the hardener that you are using, thus your mix some >of it with the thick epoxy resin >that you are going to use. e.go. Shell 828. You can use up to 10 % reactive >dilutant . Try to keep it below 5%. Too much and it will weaken the epoxy. >If you use acetone, alcohol etc to thin the epoxy realize that you may be >drastically reducing the resultant strength of the epoxy. Thin epoxy resin >(is a pre diluted Commercial type). They have diluted it up to the point >where they know that any further diluting will reduce their specs. >Jeff Scott is right, in that the liver must remove the acetone from your >blood stream. >The body can produces acetone in small quantities. In diabetics it can be >produce in large quantities so that it can be noticed in their breath. Not >nice. >Methylated spirits, wood alcohol, methyl alcohol, methanol, all the same >substance is a good solvent but it has the property of damaging the optic >nerve. It as all other alcohols produces intoxication. Drink it and you may >wake up blind, permanently. >Grain alcohol, ethyl alcohol, ethanol is the common intoxicant in alcoholic >beverages. If it is mixed with a toxic substance , it is then called >denatured alcohol. >Drink it at your own risk. Rubbing alcohol, propyl alcohol, iso propyl >alcohol will give you a terrible drunk. The 5 carbon alcohol called "fusel >oil" or "Gun oil" (amyl alcohol) is what is in some commercial Spirit >beverages that makes the cannons go off in your head the next day. Your >skin is rather porous to these fat dissolving substances . Remember this >when using them to clean out epoxy containers, cleaning up spills etc. >Regards, >Harold Woods >Orillia, ON Canada >haroldwo...@rogers.com > > > > > > >_______________________________________ >Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp >to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net >Post photos, introductions, and For Sale items to >http://www.kr2forum.com/phpBB2/index.php >please see other KRnet info at http://www.krnet.org/info.html > > > >
