Engine block repair method

[yamaha_george]

In some cases welding may not be the answer here are a few examples :-

http://www.locknstitch.com/RepairExamples.htm

The idea seems smart enough and I have never used the idea / or this companies product (never been unlucky enough to need to try) but is placed here as another line of thought if you get truly stuck trying to repair unobtainium