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Roger B:
Back on this one again after all sorts of interesting distractions:

https://www.modelenginemaker.com/index.php/topic,12350.0.html

https://www.modelenginemaker.com/index.php/topic,12379.0.html

https://www.modelenginemaker.com/index.php/topic,12381.0.html

I am still working through the engine structure, crankcase and engine bearers. There are still lots of holes to drill and tap and lots of collisions with other parts to avoid  ::)

Kim:
Nice to see you making some progress on your engine, Roger!  :popcorn: :popcorn:

Kim

RReid:
Better interesting distractions than the other kind! Looks like some good progress has been made though.

Roger B:
Thank you both  :ThumbsUp:

A quick check to make sure I could get to the grub screws that hold the crankshaft in place and then more drilling and tapping of the plates that make up the engine structure.

Unfortunately, I broke a 2.2mm drill in the end of one of the side plates. This is a slightly chewy aluminium and I had already broken one drill today. That was in a through hole so I could get the broken bit out fairly easily. This one was in a blind hole and unlikely to be removeable I thought. I could redrill in another place and plug the original so in any case it was salvageable.

With some teasing with a scriber and a very fine pair of Lindstrom needle nosed pliers I was able to remove the broken piece and finish the job as planned.

The side plates were too long to fit in my tapping rig so I had to tap all 8 M2.5 holes by hand, luckily without mishaps  :)

cnr6400:
 :ThumbsUp: :ThumbsUp: :ThumbsUp: :popcorn: :popcorn: :popcorn: Glad you got the broken drill out Roger. No fun to deal with those, or small taps either.

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