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10

Have you considered screwing your decorations to the metal stand, using Technic brick holes to pass the screws? If done properly no harm is done to the bricks, and you will not fear a bad glue joint!


4

I'm always hesitant to recommend gluing LEGO as it is so much against the spirit of LEGO. Have you considered using the magnet bricks? They come in several regular LEGO brick sizes, and they stick to metal surfaces just fine. If you must use glue, most glues will readily stick to the plastic, so that is no problem. What you need to check is what glues work ...


2

So I've been referring to this post for a long time and I figured it is time to put in my experiences. One thing that many answers don't talk about is that different glues are good for different purposes so my input will revolve around that. A little background. I've been building Lego for multiple decades though only recently started using glue as I've ...


2

It's probably not the best option to use no: according to Wikipedia, glue guns tend to operate at the following temperatures: Low-temperature glue guns operate at approximately 120°C (248°F) [...] High-temperature guns operate at approximately 190°C (374 °F) LEGO and Mega Bloks' primary component, ABS, has a melting point around 105°C (221°F), which is ...


2

There are three factors you have to consider here: the possible chocking hazard for your child, the possible toxicity of the glue to your child, and the degree of removability of the glue. I don't think there exist a glue that is (1) completely secure (i.e. won't allow small parts to become chocking hazards), (2) safe to be handled and possibly ingested, ...


2

This sounds like a job for "Amazing Goop." It's available at Home Depot and other big stores, at least in the US. There are a few varieties, including one for automotive use. It pretty much sticks anything to anything, and once cured, it's on for good. I've used it for gluing LEGO pieces onto a curved metal surface, and was very happy with the results. ...


2

Is there a specific scenario in which it should be unbreakable? You definitely should use different techniques to prevent a spaceship from falling apart when dropped from a meter and to prevent a brick wall from separating when hit by a rolling football. For System bricks using larger, longer bricks in overlapping configuration (think real life bricklaying) ...


1

This is really nearly impossible unless you have a lifetime supply of super glue. A good structure using Technic LEGO bricks will provide better support and a lot more "stick" to each other, making the creation less breakable. Building the structure in which the strongest side will take the most hits/pressure should be an excellent way to make the model ...


1

According to Wikipedia acetone can help soften cyanoacrylate, but it also dissolves ABS, so you might want to avoid that. Another website advises for using soap and water, although it seems dubious to me whether it would make any difference, this method certainly won't damage your parts (unless they are electronic or have stickers), so you might as well ...


1

Many thanks for all your help and ideas. We have experimented with gorilla glue and a couple of others but settled on two part Araldite Rapid, which doesn't take long to set. As they are tree decorations that we are selling to raise funds to build a new building (our old one is rotting away!) they needed to be fairly robust. Sorry that we are sticking ...


1

Depending on how sturdy you need it, then a lot of glues will work. In other words, if this is just going to sit on a shelf, you really don't need tremendous adhesive power. In this case, I would recommend something like JB Weld or Gorilla Glue. However, make sure you properly prepare both surfaces by roughing them up a bit and cleaning them. If you need ...


1

Your question doesn't explain why you want to glue the models for a 4 year old, so I'm going to go ahead and advocate that you don't glue and instead let your 4 year old build. 4 years old is a great time to be learning the fine motor skills, geometry, physics, colour and esthetics, not to mention creativity and storytelling. Gluing the models takes away ...



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