Expandable Foam Bead Casting

[@ECL..]

Just the video I was looking for, thanks. Where do you purchase the pre expanded beads?

[@rasmalai2426]

How to color this ball you made? Please do a video. Thank you

[@hydroponikstuttgart4515]

Hey, great Video! Could i bake my mold in a oven if i premoisture my eps beads? Thx, Cheers

[@andreyl2705]

Thank you. very useful.

[@splendour3951]

Thanks 🙏

[@charlesweinberg9802]

Hey there, Where are you purchasing the beads from?

[@toastrecon]

I wonder how much outward pressure they exert when they expand. Could you make the mold out of plastic?

[@EPSEPP]

It depends on various parameters, In my working place, our maximum pressure "inside" mold is about 1.5 bar. As for plastic mold, I don't think they can handle the pressure & heat/cooling multiple times.

[@EPSEPP]

@@MultiKumar321 Usually when you buy those raw material, the provider tells you the density range. There are also phrase of pre-expand and aging before block molding, so there is lots to do actually "control the density". Some extreme case, even when you completed foaming, some clients use hydraulic press to compress and make the block's density higher. Please describe more specific phrase of density you are looking for.

[@EPSEPP]

@@MultiKumar321 We usually use steam as it is most efficient way in mass production, not hot water. If only in small amount, and not density sensitive, (because you are impressible control pressure inside dry oven), then it could be expand. I had never try this before. Beware that you are not possible to expand them and not 'shape' them by 'dry oven' way, you need stirring to prevent them from getting together.

[@williamandjacklynnscott5317]

Where do you get these beads?

[@makingcookingfixing]

How would you call these beads as poly styrene beads it seems are nowhere available

[@ForPropertyInvestors]

Would this be suitable up 100 degrees, as insulation around hot water pipes in a car angine bay?

[@zachdidat7513]

Is that a homework question? It would depend on the thermal properties of the specific type of polystyrene / foaming beads used 🤔

[@ForPropertyInvestors]

Not a school homework question. Just considering ways to insulate/keep hot waste vegetable oil, passing through filters on its way to the engine injection pump, which is better if the oil is gotten radiator temp hot!

[@ForPropertyInvestors]

Considering a copper coil tightly wrapped around a CAV oil filter cartridge and then encapsulated with foam of some sort to insulate it more!

[@andreyl2705]

Hello sir. Can you tell me if there should be a hole in the mold so that the water can go in?

[@EPSEPP]

I think Zach put a hole in his mold in order to release the pressure.

[@andreyl2705]

@@EPSEPP Thank you)

[@saadmahmoudelhwary956]

Why do some people enlarge it to half its original size, then put it in a mold, then enlarge the foam to the largest size?

[@EPSEPP]

To reduce cost. If this foam product is not sensitive to its density (strength), then make it lighter (each material larger) would be more economical.

[@user-un3ps2jb3l]

Bonjours Ou acheter les billes expancer.merci ?