F-16 Posted June 17, 2022 Share Posted June 17, 2022 I am wondering if white glue will adhere to bare plastic that has not been cleaned (mold release still present on the plastic parts). When I try to use WG to attach my lead shot ballast, the glue adheres to the shot but does not hold onto the bare plastic. The lead shot then just comes off in one large piece, as if the WG adheres to the lead, but not the plastic part. Scott CNJC-IPMS Quote Link to post Share on other sites
airmechaja Posted June 18, 2022 Share Posted June 18, 2022 I use 5min. epoxy for that job. Never had a problem. Quote Link to post Share on other sites
Alternative 4 Posted June 19, 2022 Share Posted June 19, 2022 White glue is erratic in it's adhesion. In my experience it does not adhere evenly once dried so some parts may dry and attach, but other parts do not. It's not surprising that it doesn't stick to the plastic. White glue sort of sits on the surface of both parts so it doesn't really join the parts but connects the parts. That said I still use it as I have just as much trouble with super glue. Quote Link to post Share on other sites
vonjhn68 Posted June 19, 2022 Share Posted June 19, 2022 It may have better adhesion if the plastic is scuffed up prior to gluing. Quote Link to post Share on other sites
habu2 Posted June 19, 2022 Share Posted June 19, 2022 White glue is intended for use with porous materials like paper, wood, etc. It won't form a good bond on non- porous materials like styrene. Quote Link to post Share on other sites
Geoff M Posted June 19, 2022 Share Posted June 19, 2022 I use a type of elmers glue that is clear. I use it to attach canopies that may be too easy to mess up with plastic cements or super glue. The nice thing about it is you can typically remove the canopy when all the painting is done with no damage and the glue can be removed with water and a little scrubbing with a cotton swab. Then you can pose the canopy open. Geoff M Quote Link to post Share on other sites
jonwinn Posted June 20, 2022 Share Posted June 20, 2022 Kinda like soldering and welding. Soldering fills the pores....low adhesion...like white glue. Welding joins the 2 base metals, like styrene glue it makes a much more solid joint. At least that is what I noticed from my many years of glueing plastic. jon Quote Link to post Share on other sites
ElectroSoldier Posted July 2, 2022 Share Posted July 2, 2022 On 6/17/2022 at 3:15 PM, F-16 said: I am wondering if white glue will adhere to bare plastic that has not been cleaned (mold release still present on the plastic parts). When I try to use WG to attach my lead shot ballast, the glue adheres to the shot but does not hold onto the bare plastic. The lead shot then just comes off in one large piece, as if the WG adheres to the lead, but not the plastic part. Scott CNJC-IPMS The whole reason for the realease agent is to stop things from sticking to each other. ie the plastic to the mould. It will also stop anything from sticking to the model too, including "white glue" CA glue, plastic glues "burn" through the release agent. If you have to use "white glue" then you might want to remove the release agent by activating the surface with some light sand paper. Otherwise there are better adhesives out there for attaching weights into models. I only ever use "white glue" as a binding agent for lead shot weight, and in places where its not going to fall out, I just dont want it to rattle around. Quote Link to post Share on other sites
JackMan Posted August 28, 2022 Share Posted August 28, 2022 I just use plasticine, a putty-like modelling material and stuff some metal screws and bolts inside it and attach the whole lot to the nose of the aircraft to add weight. Quote Link to post Share on other sites
spejic Posted September 2, 2022 Share Posted September 2, 2022 Do mean traditional plasticine or modern polymer clay? The first should be ok, but the second definitely should not be in contact with models before it is baked and set. It is full of plasticizers and will eat through your model in time. Quote Link to post Share on other sites
JackMan Posted September 3, 2022 Share Posted September 3, 2022 Traditional plasticine. Quote Link to post Share on other sites
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