Holeinthehead2 Posted December 20, 2024 Posted December 20, 2024 Something I never really thought about is VOC's with CA. This is the top from a candle it's glass and my CA method is that I put a little puddle like where it shiny now near the bottom of the photograph. I put a little puddle there and then I use a toothpick or some fine pointed object to get the CA. The cloudiness that is all around the outside of that is on the outside and that is what has evaporated or whatever deposited on the outside. Freaky 1
rattle can man Posted December 21, 2024 Posted December 21, 2024 I'd wonder if your glass lid has a thin layer of plastic to help keep it from breaking or to make it safer to handle if it breaks? To answer your question about evaporation, most plastic model cements cure by evaporation of a solvent. I believe ACC reacts with elements (hydrogen?) in the air. 2-part products usually have a chemical reaction, with some kind of off gassing. I don't know much about the UV cured glues.
NOBLNG Posted December 21, 2024 Posted December 21, 2024 (edited) From the American Chemical Society site: “Ethyl 2-cyanoacrylate and its cousins polymerize instantly in water. The small amount of moisture in air is enough to initiate polymerization. The polymer forms within a matter of minutes, creating a bond that is often stronger than the materials it joins.” It will also react with cotton and some other materials creating fumes. Edited December 21, 2024 by NOBLNG 1
Redisetta Posted December 21, 2024 Posted December 21, 2024 Call me confused, I don’t understand what you’re trying to describe
Straightliner59 Posted December 21, 2024 Posted December 21, 2024 I put superglue on a plastic lid (like from Pringle's, etc.). I have a dowel that I mounted a sewing needle in, to apply it, but, I digress--that plastic lid gets all crusty, like that, too. For a time, it'll sort of peel off, but, after a while, it seems to embed itself, and won't come off, anymore. That's when I toss it. The applicator's been around, for years. I've replaced multiple needles, in it, and the dowel, itself is polished, from use. 1
Holeinthehead2 Posted December 21, 2024 Author Posted December 21, 2024 Use toothpicks mostly, like the needle idea👍🏻 1
bobss396 Posted December 21, 2024 Posted December 21, 2024 I use beer bottle caps and toothpicks, seems to work well for me. 1
Holeinthehead2 Posted December 21, 2024 Author Posted December 21, 2024 I like the acquisition of the caps… 3
rattle can man Posted December 21, 2024 Posted December 21, 2024 Cyanoacrylate is one of the "C"s in ACC/ superglue. Polymerize in simple terms is a chemical reaction. The gasses created and released during polimerization can further react with other materials in the immediate area. If you ever experienced fogging of clear and /or "chrome" model parts when using ACC, this is why. 1
johnyrotten Posted December 21, 2024 Posted December 21, 2024 56 minutes ago, rattle can man said: Cyanoacrylate is one of the "C"s in ACC/ superglue. Polymerize in simple terms is a chemical reaction. The gasses created and released during polimerization can further react with other materials in the immediate area. If you ever experienced fogging of clear and /or "chrome" model parts when using ACC, this is why. So this is the idea how forensics lifts fingerprints on delicate surfaces with it? 1
Straightliner59 Posted December 21, 2024 Posted December 21, 2024 1 minute ago, johnyrotten said: So this is the idea how forensics lifts fingerprints on delicate surfaces with it? It sure is! 1
Rick L Posted December 21, 2024 Posted December 21, 2024 I use water bottle caps for dabbing CA and mixing small amounts of paint. When done toss away. 1
Holeinthehead2 Posted December 21, 2024 Author Posted December 21, 2024 🙏2nd guy with bottle caps, have to try. thanks for 👀
Bugatti Fan Posted December 22, 2024 Posted December 22, 2024 I'll settle for drinking the beer! Lol Seriously though this is quite an interesting thread. 1
bobss396 Posted December 22, 2024 Posted December 22, 2024 I also use shiny thin post card ads that come in the mail. I cut them into little squares, use once and chuck them. I keep an old paper coffee cup on the bench that I throw all scraps into. When it gets full, I toss that.
johnyrotten Posted December 22, 2024 Posted December 22, 2024 I use a pill bottle with piece of masking tape on it flipped upside down. Came upon that on this forum somewhere, can't recall what thread.
Holeinthehead2 Posted December 22, 2024 Author Posted December 22, 2024 Interesting different approaches, thanks ALL
peteski Posted December 22, 2024 Posted December 22, 2024 I often see "frost" forming on plastic (polyethylene) CA glue bottles in extended storage in humid environment. The frost even extends onto the surrounding surfaces. Seems that CA has the ability to permeate the polyethylene because the bottles are not open (airtight). The frosting even shows up on metal or glass surfaces (like what Alfred shows). I don't think it is due to VOC contents. I'm not a chemist but I believe VOC is really about solvent evaporation. CA is a liquid resin which hardens by polymerization - it doesn't contain a solvent.
Holeinthehead2 Posted December 23, 2024 Author Posted December 23, 2024 Thanks for the comment, learning a lot from my post
rattle can man Posted December 23, 2024 Posted December 23, 2024 As stated superglue/ACC dries by polymerization. Polymerization is a chemical reaction that does emit gasses (not necessarily VOCs) that can affect other materials. Plastic cement and other types of glue do dry by solvent evaporating. 1
Nicholas Posted December 23, 2024 Posted December 23, 2024 On 12/21/2024 at 2:20 PM, Rick L said: I use water bottle caps for dabbing CA and mixing small amounts of paint. When done toss away. thats my go to,i use spring water bottle caps and my glue looper....game changer for me
Rick L Posted December 23, 2024 Posted December 23, 2024 Working excessively with CA without ventilation can cause harm to your respiratory system. A colleague of mine worked with it on a model project years ago and any time he got a simple whiff of the stuff he went into sneezing fits. Kind of funny though.😆
peteski Posted December 23, 2024 Posted December 23, 2024 My CA application methods are described in the following post: https://www.modelcarsmag.com/forums/topic/165362-ca-glue-wells/#comment-2469163 If you look at the CA bottles in the photo you can see some of that CA fogging we have been discussing here.
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