I 3D print lures with PETG and was wondering if anybody had suggestions for sealing 3D printed lures.

18 minutes ago, TheLastBestFish said:

I 3D print lures with PETG and was wondering if anybody had suggestions for sealing 3D printed lures.

Well, it's not porous or absorbent like wood is, so I think paint and a clear coat would be fine. 

I believe if you brush your lure with super glue and let it dry thoroughly, it will seal your PET-G. It also works on PLA. Many guys that make balsa crankbaits use super glue to harden the balsa and seal it. Once dry, you can lightly sand it, then white primer, paint and clearcoat. That is what I would do.

15 minutes ago, cadman said:

I believe if you brush your lure with super glue and let it dry thoroughly, it will seal your PET-G. It also works on PLA. Many guys that make balsa crankbaits use super glue to harden the balsa and seal it. Once dry, you can lightly sand it, then white primer, paint and clearcoat. That is what I would do.

Why does PETG need sealing? That part is lost on me.

3 hours ago, Michigander said:

Why does PETG need sealing? That part is lost on me.

I have small gaps in the plastic, so i want to make sure, you know

1 minute ago, TheLastBestFish said:

I have small gaps in the plastic, so i want to make sure, you know

Oh, so this is a multi part print?

Out of curiosity, why do you have small gaps in  your plastic? Your PET-G should fuse just like PLA. If you want to go out on a limb, you can slowly fuse the filament with acetone. Put acetone in a jar, put your lure on a rack in the jar above the acetone, the fumes from the acetone should fuse/melt the filament tighter. Just be careful, as you have to watch this so you don't melt all the PET-G into a big mess.

48 minutes ago, cadman said:

Out of curiosity, why do you have small gaps in  your plastic? Your PET-G should fuse just like PLA. If you want to go out on a limb, you can slowly fuse the filament with acetone. Put acetone in a jar, put your lure on a rack in the jar above the acetone, the fumes from the acetone should fuse/melt the filament tighter. Just be careful, as you have to watch this so you don't melt all the PET-G into a big mess.

There's also the old trick of the plastic slurry for gap filling. Take some filament and acetone in a glass jar until it melts into a gel and then "paint" it into the gaps. When the acetone evaporates, it leaves just the plastic behind. You might have to use ABS to make the slurry, not sure if PETG reacts the same.

Additionally, there's UV resin or super glue and baking soda.

On 2/13/2021 at 8:37 PM, cadman said:

Out of curiosity, why do you have small gaps in  your plastic? Your PET-G should fuse just like PLA. If you want to go out on a limb, you can slowly fuse the filament with acetone. Put acetone in a jar, put your lure on a rack in the jar above the acetone, the fumes from the acetone should fuse/melt the filament tighter. Just be careful, as you have to watch this so you don't melt all the PET-G into a big mess.

My lure halves aren't completely airtight, so my two halve have a small gap between them.

SUUUUUUPER GLUEEEEE!!!!!

1 hour ago, HaydenS said:

SUUUUUUPER GLUEEEEE!!!!!

Depending on the size of gaps, a gel super glue might work, but I assume the OP has significant gaps. Super glue and baking soda is a solution to this though.