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Definitive guide for glues

There are so many recommendations for different glues that I need to get informed about.

BCQLI, B4000, B5000, B6000, B7000, B8000 Glues

Is there a definitive guide for when and where to use all these different glues?

I’m really tired of opening a tube of super glue and getting one use then finding the whole thing hardened and unusable the next time.

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Puan 7
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I'd really like some more input on this one as I still don't know what to use or when, or if theses are all the same or if I just stick good old Emers glue on everything.

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I haven’t come across these before but the best Mr Google could come up with was https://www.quora.com/What-is-the-differ...

It seems these are generally Chinese copycat products so it may not be possible to get any info. For Western products from mainstream manufacturers you should be able to get datasheets on all their products, going into nauseating detail.

As for superglue going hard, yes, it’s the nature of the beast. I generally just buy it in a multi-tube blister pack containing the largest number of the smallest tubes I can find. Some tubes have a pin in the lid to keep the nozzle clear. Or after use you can sometimes squeeze the sides of the tube to make it suck the remaining glue out of the nozzle before replacing the lid. Storing them upright also helps. But I’m sure a man of your experience knows all those tips and a good few more!

(For the sake of others reading this post, there’s a summary of different adhesives in the Restart Wiki at https://wiki.restarters.net/Sticky_Stuff )

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Puan 3
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I can only add my experience here, but I thought it worthwhile to share.

All the 'B+numbers' glues are indeed polymer glues made and produced in China, from a Chinese company named Zhanlida that came up in 2018. Not exactly copycats, as there are no others of the exact same type produced, but they make it after the composition of E6000, which is a product and trademark name of Eclectic USA. Just like generic drugs, but without the oversight that comes with having to pass a standard.

https://www.zhanlidaadhesive.com/which-t...

http://eclecticproducts.com/downloads/td...


All of them, including E6000, are decidedly NOT of the superglue kind. Once cured they remain elastic and somewhat resilient, despite strong adherence. They take some time to cure after application, can be repositioned for up to 5 minutes and the parts need to be held together (although not clamped tight, for that may cause most of the glue to be squished out) until cured -- in my experience, 12-24 hours is best.

I have used mostly E6000, for over two decades. I found it especially good on acrylic and similar plastics, glass, stone, and it will stick together wood, fabric and leather without problems. Not for great weights, though.
The advantage is that the excess can be cleared off with an Exacto knife or razor blade... and if you have to pull the thing apart afterwards, even years in my experience, an utility knife is all you need, so long as the glued surface is straight enough for it to fit (I have taken off stones from settings, but it's a gamble).

I have used some of the B+ line for curiosity in the last couple years. I find them not so bad, but in my experience E6000 is better. And the price is not greatly different. You can find both varieties at Home Depot or Walmart.

Hope this helps!

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Puan 2

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With regard to glues drying out, my habit is to grease the threads on the tube with petroleum jelly (Vaseline). There are two benefits: one, it keeps the cap from getting glued on to the tube, and two, it makes for a better air seal to prevent the glue's solvent from evaporating out.

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To further comment on glue drying up, never buy epoxy in those "double-barrel" syringes. Unless you're going to use it up right away, they're a total drag. They get hard and you end up throwing them away full of unused glue.

I frequently use epoxy for my repairs, and I buy it in a two-bottle kit (e.g.: Devcon Item #20945) that contains a 4¼ ounce squeeze bottle of resin, and a 4¼ ounce squeeze bottle of hardener.

It's more economical, and it will last for many, many repairs.

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