Pulled engine stud socket repair

Did this engine case repair on Will Perry's Viper cases a few years back. Will took a couple photos , and posted them on his Facebook page at the time. Will's notes : " Action shots from yesterday in Lakebay. Difficult repair on the Velo's Rt main case - second time this area's stripped out. Geoff & Ed discussed the repair for an hour to decide on the best approach. A milling machine was used as a jig for the critical drilling and tapping part. Ed spent over an hour machining necessary small bits, securely clamping the case in, adjusting and aligning, and aligning and adjusting. Once the drilling started, the bit was periodically ground down so the hole would be square at the bottom. The tap was also ground off as needed, so the tool would would tap all the way to the hole's bottom. To make the actual insert for the repair, a large bolt was slowly center drilled and tapped using a lathe. This morning, Ed machined down that part to the same external dimensions as the original Velocette part. Ed called at lunch to say that he had screwed in the insert, it seems tight and strong, and the alignment was just right. He's started reassembling the engine. Six or seven hours to fix a stripped out hole! It's astonishing to me that folks like Ed have the skill and patience to keep these 60 year old machines running. Rock on, Ed! "