3D Print with 0% Infill, But Fill It Later to Make the Print Solid

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3D Print with 0% Infill, But Fill It Later to Make the Print Solid

So lately, I wanted to print some large solid prototype parts. If the prototypes turn out great, then I can use it as the final product. So I have two options:

1) Print the prototype completely solid. If it works, then great, I have my part. If it doesn't work, I wasted plastic and have to print again, test again, and repeat the process. This process wastes a lot of plastic and wastes a lot of time.

2) Print the prototype with thin walls (0.8mm) and 10% or 20% infill. If the parts work, then I print it solid. This also wastes some plastic. But it also wastes a lot of time to get to a final product.

Today, I needed a working product as quickly as possible. Both options would waste too much time, where I would not be able to meet an one day deadline. So a third option came to my mind.

I can print the prototype with thick walls (3.2mm). But print with no infill (0%). Theoretically, the inside would be completely empty. After I test the prototype, and if it works, I can drill a hole and fill the inside with sometime of glue/filling that would turn solid, making the prototype a solid part. This option eliminates waste in successful prototyping. And it allows me to meet the one day deadline. The glue/filling curing process can take longer as a trade-off, but I would have met my deadline already.

Questions are 1) Has anyone already tried this process? 2) What glue/filling would work for this purpose?

Mel
Mon, 07 Jan 2019 20:01:37 -0800

After looking around, I found some potential solutions. Reading this "Filling Hollow Plastic", I found that you can fill hollow objects with resin and expanding foam. Resin seems to provide a hard filling, while expanding foam provides a soft filling.

I found two possible resin products. First, the "LIQUID NAILS/PPG ARCH FIN LN-547 5 oz Liquid Nails Fuze".

Anyone has any other options?

Mel
Mon, 14 Jan 2019 04:57:18 -0800

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