[Tom]

So i have a subwoofer box that i need to make smaller by 1 litre. I was thinking of just pouring in 1 litre of resin and leaving it to harden. Someone also suggested mixing resin with sand and using this method as i would not have to layer it, i could just pour it all in. If this would work what ratio of sand to resin would i need? And would i have to combine both volumes of sand and resin to 1 litre then mix it together?

Thanks

[Katherine Swift]

Hi Tom, I haven’t done a project this large with resin and sand.

For smaller projects, I add enough sand to where the resin is saturated, but still pourable.

[Tom]

How about if i were to pour 1 litre of sand into the box and then add a small layer of resin over the top to stop it moving around. Would that work?

[Rhonda J Hunter]

Is the sand necessary to your project? That adds a lot of weight. I would cut styrofoam to fit the inside and glue it in.

[Katherine Swift]

The resin is going to soak into the sand.

Have you considered concrete? You could pour the concrete, then seal it. The resin shouldn’t permeate through.

[Tom]

The thing is the box or enclosure is made out of a fibreglass mould and is far from a cube or cuboid so it would be difficult to cut foam to fit perfectly and reduce the volume accurately by 1 litre. I ideally need to pour in 1 litre of liquid substance so it will fill the fibreglass mould then have it harden.

[Tom]

I think concrete may be a tad too heavy. It may crack the fibreglass?

[Author]

Posts