You could design a hex nut apperture in the bottom then glue in some cheap nuts. Very cheap nuts and washers can be bought from pound/dollar store. It should work depending in the size of the pieces.

You could just epoxy a washer on the bottom.

You can also build in a pause during the printing so that you can place your weight and then continue printing, fully enclosing it.

Sounds like a good idea, will look into the cost of that, thanks!

For a chess set, a metal disc, like a washer or set of washers, could be included in the bottom.

Maybe a threaded bottom modeled so the washers fit neatly and are sandwiched when the bottom is attached so it's silent.

Okay, then pour white glue in with the sand you already have.

I've looked at epoxy but I don't think it would be a very cost-effective weight compared to the others

Pouring epoxy or any type of grout or similar glues should be easy to control and stable after it cures.

Lead Fishing weights, come in hundreds of weights and sizes

Gold coins are good because of the high density, so you need fewer.

Hi guys, 

I was wondering what the cheapest way of filling a hollow 3d print is. I'm planning on making a chess set, and the pieces need some weight. Filling in the pieces 100% with infill would give me just about enough weight, but it's a lot of material and I'm sure there is something that would be more cost-effective.

I tried sand and it was awkward &amp; not really possible to get the weight you want, because if you fill it 3/4 full then you get rattling sounds. 

I looked at steel bb's and it comes out at around the same price if I was to just use infill, and you'd also need to do something to stop the rattling. 

I was wondering if there is maybe a more cost-effective &amp; simpler way to do this? I'm confident using 3D software to edit the model for particular uses.

Thank you in advance!

Cost-effective way of filling in 3D prints for added weight?