3D Printing PETG newbe

[bobby_hamill]

Several questions about using PETG with rocketry

First of all I don't have any scrap PETG to test on so hence the questions .
On painting I understand to sand the surface to give the paint a surface "bite" into,
wash part and let dry. Start with primer and then final colors with clear coat on last.

Enamel paints are ok to use on PETG ?

What glues to use to attach Estes tubing to PETG ? Epoxy and Elmer's white glue
I assume are ok to use and to stay away from super glue ?

Thanks

Bobby

 

[cwbullet]

Plastic primers work best.

Finishing PETG: https://www.matterhackers.com/articles/how-to-post-processing-petg-3d-filament
Painting PETG: https://lukethier.blogspot.com/2016/11/what-paints-stick-to-petg-and-cross.html
Gluing PETG: https://all3dp.com/2/best-glue-for-plastic-pla-abs-petg-nylon/

 

[bobby_hamill]

The gluing section is for gluing PETG to PETG but what about cardboard airframe to PETG ?

 

[cwbullet]

I used the same adhesives.

 

[bobby_hamill]

I assume the plastic primers are compatible with the Estes type cardboard air frames ?

 

[cwbullet]

Yes. Definitely work with Estes tubes.

 

[Yukon@K-9 Rocket Tech]

I always just use epoxy on PETG. Keep in mind PETG doesn't have as good of a "grip" as pla with adhesives. Also painting is a bit harder on petg, jut let it sit after every coat, while other plastics you can kind of cheat on this