On reading some postings on using baking soda as an
acid-neutralizer, it reminds me of another interesting use for
this amazing white powder. Whenever I have to repair anything
made of hard plastic (including plexiglass/acrylic/perspex) which
would include jewellery equipment, as well as a multitude of
other things around the house, I mix super-glue (cyano-acrylate
and crazy-glue I think it’s also known as) with baking powder.
This forms an extremely hard cement with gap-filling properties.
The two plastic surfaces to be joined are placed together (they
don’t need to be perfectly matched) and then the joint is covered
with a good coating of superglue. While the glue is still wet,
sprinkle a small amount of bicarb-soda on the gluey joint with a
toothpick and let dry. Try not to add more than can be absorbed
by the wet glue per application. The joint can be built up with
as many layers of glue/bicarb as needed to produce a larger
bonded area. I have many articles around the house repaired in
this way which are still holding together after years of use.
Have a go! Now, if I can just get my fingers apart…