FAA Advisory Circular 43-13-1B section 1.6 goes into the official process to prepping glue joints.
www.faa.gov/documentLibrary/media/Advisory_Circular/43.13-1B.pdf Also great info on knots, mineral streaking, pitch pockets and other wood defects. Great source. Dan Prichard Portland, Or. > On Jan 20, 2014, at 5:03 AM, "Mark Langford" <ml at n56ml.com> wrote: > > Paul Visk wrote: > >> Would sanding burn marks affect the bond with T88 epoxy? > > End grain joints are the weakest, so anything you can do to improve on this > would be good. I read an epoxy comparison done in Wood or Fine Homebuilding > magazine a few years back, and if I remember correctly, their advice was to > use it as cut off by the saw, rather than "polishing" the ends with a > sander. If you need to sand the angle to perfection, I'd at least use some > coarse sandpaper. I used a lot of 50 grit building N56ML, and some floor > sanding belts that were something like 18 grit that looked like small gravel > stuck to the paper for serious wood removal. It makes for quick work, and > they remove a lot of wood during their long life. > > Mark Langford, Harvest, AL > ML at N56ML.com > www.N56ML.com > > > > > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options
