28 Nov
2012
28 Nov
'12
8:37 a.m.
On 11/28/2012 12:09 AM, Tothwolf wrote:
Neither. Epoxies won't stick well to plastic and
cyanoacrylate type
"glues" (superglue, crazyglue, etc) will make an extremely brittle joint
and will make future repairs nearly impossible. If it is ABS plastic,
use dichloromethane (methylene chloride) to solvent weld it back
together. Align the parts and allow the solvent to get into the joint
via capillary action. Be careful not to push the parts together hard
enough to squeeze plastic out of the joint because that will make the
joint brittle too.
Agreed on that one. Two days ago, I repaired the broken-off "tang" on
a bezel to a 3.5" drive. No more than about 3mm wide and 2mm thick,
solvent cement did a perfect job in restoring the part. I used a
hobby-variety brand called "Tenax 7.R'. Dichloromethane is also
referred to as "methyl chloride". Done well, the repair is invisible
and will not show discoloration with age.
--Chuck