Building Sand Core Box For a Two Stroke Engine Block

Before I can cast the 2 Stroke engine block it needs a sand core. I could have 3D Printed the core box but chose the the more long, drawn out hands on approach. In this video I'll show you how I made a plaster sand core box.

[@mattharvey8712]

Bravo........baby powder aprinckled on sand mold .......release agent ..........Vaseline for plaster release .......cheers

[@kaikorea7475]

6666

[@RustyInventions-wz6ir]

Very interesting. Nice work sir. I really need to try my hand at casting

[@strittmatterironworks]

If you don't have a furnace to melt aluminum, small propane setups are cheap and green sand is cheap & simple to make. Practice on simple flat parts first.

[@gwheyduke]

I made some wood core boxes, then after using them a couple of times, stuck the halves in the sand and cast them in aluminum. Works out well when cooking the core mix to dry it.

[@strittmatterironworks]

Great idea! I'll have to remember that if I make cores that need baking.

[@Preso58]

Looking good. I'm surprised at how well the greensand core came out of the mould.

[@strittmatterironworks]

Yeah considering it's raw uncoated plaster. I'm going to brush some thinned epoxy on the core box to seal it and to offer some abrasion resistance against the sand.

[@tinayoga8844]

Looks great. Though I wonder if venting of the core might be a problem. Can't wait to see the next video.

[@strittmatterironworks]

Thanks! For venting I'll just poke each end of the core with a tig welding rod and see how it goes.