take a look at JB weld.

Tom

"Abe" wrote in message
...
Hi all,

The underside of the lower spray arm in my dishwasher has developed a
hole about 1/2" round. Fortunately, it is located near the outside
edge, so patching it won't affect water flow.

What would be a good material for patching the hole? Is there anything
like a plastic-weld that doesn't require heat?