PLA and ASA filament

[Six Shooter]

Does anyone have experience, or know about, the ability of PLA filament to bond to ASA filament? Consider: A solid object printed with ASA filament to which you want to add a protrusion which is printed with PLA filament.

I know this is a rare situation, but it is important for me to know.

Thanks for any guidance you may be able to provide.

 

[Zapfin0]

My brother tried this before on a drone case. ASA for strength, PLA for a small add-on. PLA can stick to ASA, but the bond isn't very strong, especially if it gets hot or takes pressure. He sanded the surface and used glue (like epoxy) to help it stay. If it needs to hold weight, it might not be the best mix. But for looks or light use, it should work fine.

 

[joechristianguy]

Does anyone have experience, or know about, the ability of PLA filament to bond to ASA filament? Consider: A solid object printed with ASA filament to which you want to add a protrusion which is printed with PLA filament.

I know this is a rare situation, but it is important for me to know.

Thanks for any guidance you may be able to provide.

Some have found success with solvent welding when working with ASA, but unfortunately, that won't do you any favors if you're using PLA. If you're looking to fuse those materials together, you'll want to take a hybrid approach with adhesives. If the protrusion you're dealing with is just for show or doesn't bear much weight, a solid adhesive along with some good surface prep should work just fine. But if it's a crucial part of your structure, it might be worth considering printing that protrusion in ASA too, or maybe even rethinking the design so it relies more on the shape and fit than on chemical bonding. Sometimes a little adjustment in geometry can go a long way.

 

[3Dguy]

Nah, they have different melting temps and chemical properties, I recommend getting an adhesive or solvent welding designed for plastics