Poly Cement

[Awins]

Ive painted some of my components in acrylic paint prior to assembly. My question is can I now apply the poly cement to these painted surfaces to join these together or will I have to remove the paint where I want the components to adhere, which really defeats the objective.
Cheers guys

[sarge8888]

You will have to remove the paint from areas you are going to put cement otherwise it just wont cement together.

Hope this helps.

[AlwynTurner]

Hi Awins, the cement or plastic weld work by dissolving/melting a layer of styrene which is what then forms the bond between the components. The paint prevents this from happening so I'm afraid it won't bond. Generally I don't paint until assembly is finished, or if I have to attach something to the painted surface I have to remove the paint or use superglue, but superglue only attaches to the surface of the paint, not the structure underneath so that again isn't a real solution. Only thing to do is remove the paint from the surfaces to be bonded I'm afraid. Cheers Alwyn

[Awins]

Thank you guys, if I had thought a little more about this I should of realized this before starting the painting of these certain components. Oh well a a lesson learned and all part of the learning process. Once again thank you.

[Awins]

Thank you guys, if I had thought a little more about this I should of realized this before starting the painting of these certain components. Oh well a a lesson learned and all part of the learning process. Once again thank you.

[greengiant]

You could in the future try masking off at least part of the area that you are going to glue together later and still prepaint the majority of the pieces.