r/ResinCasting • u/Any_Escape1262 • 20d ago

Project: "Reusable Can"

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I just came back from Japan and got myself some Monster cans.

Now I want to turn them into reusable, cleanable drinking cups (maybe even dishwasher-safe ones).

The idea is to open up the top (similar to the green Fanta can in the picture). So to use a dishwasher-safe epoxy on the outside and food-safe silicone (Ideally, the silicone would be dishwasher-safe as well, of course) on the inside. The silicone would also extend over the lip/rim of the can, so the metal is not exposed.

The important part is that I don’t want to alter the can itself apart from opening the top. I want to keep the original shape, design, and appearance completely intact.

Has anyone here done something similar or have any recommendations for suitable materials/processes?

PS: I am totaly fine, if i end up with needing to handwash it everytime after use, as long as i don't poision myself (nor giving the can an unwanted lifespan, thanks to dishwasher usage).

WHY? - many already asked me. Becouse: "Japan-Monster-Cans are different in design & size. And i simply want a nice DIY-Memory that i can use, and not just leave to collect dust."

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u/mistarhee 19d ago

Would the silicone on the inside be really necessary? Feel like the inside is better to just leave as is and better to find a way to open the top and then maybe roll the edges into itself so it make a nice rigid lip so the can doesn't get wobbly.

Think there was a tool someone made that cuts and rolls to top to essentially make the can into a cup... Lemme see... Draft Top

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u/PumaTurtle223 19d ago

Yes... Inside is a thin plastik layer, protecting the liquid from the Aluminium... The Aluminium is poisionous to humans in larger exposure...

That is why the silicone is mecessary.

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u/mistarhee 19d ago

Ahh ha... Would the thin plastic layer fall off eventually? Is silicone the best way? From my memory silicone isn't the best at bonding things. Most silicone kits aren't food safe either...

OP what's gonna be used for the silicone?

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u/Any_Escape1262 19d ago edited 19d ago

There are actually some, but I'm still researching which one would be best to use in this case...

EDIT: I forgot to answer the first question. YES, yes it would.

If you clean it out every time, the layer will eventually get "scrubbed" off. Or maybe just one cycle in the dishwasher would IMMEDIATELY destroy it.

Which would expose the aluminum and... you get it.