Tapping cast iron for poppin engine.

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PJW:
Hi Ian, any pics? :thumbup:

Bradley Simmonds:

--- Quote from: DavidA on November 02, 2014, 12:44:35 PM ---Spheroidal Graphite iron smells heavily of carbide if you first breath on it then sniff the surface.

If you get this result with cast iron, then you need to change your mouthwash.

Dave.

--- End quote ---

Ummm did i miss something?

PJW:
Are you doing a build log on your flame licker, this is an engine I know little about. I enjoy machining Cast although it is a bit dirty to work with, I have made piston rings with cast and it is amazing how much you can open it after heat treatment, its like spring steel.

ian_in_the_midlands:
I was not going to do a build log. I have little idea what I am doing, so it is very much a project to learn from.
It is a big challenge to me, and don't know yet if I am up to it.
I would hate to start the log and not be able to end it.

I will post pictures of any success following help on here.
The cylinder will be the first picture - assuming I do not mess up the drilling and tapping.

ian_in_the_midlands:
The cast iron was purchased from Noggin Ends. I think it is Grade 250 Meehanite.
It turns very easily.

Will a tiny M2 thread hold in a material with such a grainy structure?

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