Aluminium block

RustyRatRod said

"Or something" for sure. Candle wax? You think that'd stay put? I don't really understand what what you're talkin about......not that it matters. It's not like I'll ever have one. lol

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The idea was to something that could Melt Away easily and leave a passage.

Could just incorporate plumbing and then cut the pipe , seam wise down the middle to then rtv seal to the cyl.. just for the block fill n dry process.