Sorry but only just read this... As far as im aware the bits you are trying to bond together are ABS plastic.... ive used the glue plumbers use to bond plastic plumbing pipe together, readily available from your local diy store, go to plumbing section, then take the "dummy tin" to counter for a real one...they dont leave the proper ones out for obvious reasons. But watch the glue, highly flammable and lots of vapour... dont leave the lid loose or it will evapourate very quickly.
try a test piece first as you wont need much on the joints.