On 10/23/2016 2:30 AM, Gene Heskett wrote: > I considered dropping the face to be joined on my big bench belt sander > for about long enough to make the surface good and "hairy", but haven't > actually tried that. About a second maybe as the melting point is > reached very quickly and I'd want it badly scuffed without melting. > > Cheers, Gene Heskett I know far too much about this, from autism-inspired tests.
Sanding only increases the bondability SOME. It won't be anywhere near enough to be "great", it will never approach the strength of the parent material. Alcohol, thinner, MEK, acetone, etc have no real value except in cleaning off residue. Those work great for ABS or acrylic, they partially dissolve the surface leaving it tacky, etched, and the polymers are "open". But both ABS and acrylic are a "high surface energy plastic". LOW surface energy plastics include nylon, teflon, HDPE, LDPE, polypropylene, UHMW, PET, Mylar, and others. Glues and paints just don't stick to anything in this category and there's no easy answers except "just don't use glue". Their hallmark is chemical resistance and things NOT sticking to them. Danny ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
