"Boulder blaster" commercial or self made.

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  • #61
Casting is kinda easy. Don't have the equipment though.
 
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  • #64
I still like the idea of machining short sleeves out of steel. The reason is boring long holes is more costly then short sleeves.
 
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The real total cost is in the machining and tooling thereof.

One can buy second hand metal castings that will aid in a steady rest with ball bearing rollers to assist in end boring of metal on the lathe.
 
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  • #66
Got lucky and bought a sherline mill and mini lathe with a fair amount of tooling that will help things along for a song.
 

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