16 votes
Accepted

Remove 3, maybe 4, decades old PVA glue from Lego

Take it for what it is, I am not a material scientist and this is not a guarantee that the following information will work in your case. I believe your approach is correct, or at least as good as you'...
D M's user avatar
  • 949
13 votes

Remove 3, maybe 4, decades old PVA glue from Lego

Self-answer to let you all know how things went. Warm water was having some effect but it took forever. So Saturday morning I went to the DIY store and got myself a 5 liter jerrycan of white vinegar. ...
Tonny's user avatar
  • 1,262
8 votes

Removable glue for LEGO models

I would say low temp hot glue. I have done this for several my son really wanted to "keep". I figure one day he will be able to take it apart but it saves it from dropping and such!
Lauren Nering's user avatar
7 votes

Can I sell pre-built LEGO sets?

Yes, you can sell used LEGO sets. In fact there is huge market for such sets due to, relatively, high product value even on second-hand market. People use local classifieds for local sales as well as ...
Alex's user avatar
  • 23.2k
5 votes
Accepted

How to open first version of the pneumatic cylinder? (Part no 4688c01)

Thanks everyone for the answers. It gave me the courage to take the piece to the cutting block... And guess what? I now have an almost functional piece. It's not extending 100% and sometimes I need to ...
Daniel's user avatar
  • 221
4 votes

How to open first version of the pneumatic cylinder? (Part no 4688c01)

The original glue was solvent based. This means that both sides of the joint are more or less fused/welded together. It is not a simple case of "2 pieces with glue in between". Any solvent ...
Tonny's user avatar
  • 1,262
4 votes

Re-building sets - paid services?

With “services”, do you mean someone who would come out to your house and rebuild the sets for you? As intriguing as that sounds, I do not believe something like that exists. Your best bet is to grab ...
Phil B.'s user avatar
  • 16.9k
3 votes

What's the best way to glue/adhese the street baseplates to a plywood table?

I have had success with super glue (LocTite). I recommend it because: You don't need much glue to get it solidly attached. This means, if you are careful, no mess or cleanup, and no worry of bulging ...
Keith Pinson's user avatar
3 votes
Accepted

Gluing small parts with hairspray?

AFAIK those "bead glues" work on a completely different principle where the sheen on the individual beads is a water-activated glue and so the finished piece needs to be sprayed with just clean water ...
zovits's user avatar
  • 16.2k
2 votes

Is there a way to keep fragile models together?

Sorry for your loss. I would hide them behind a locked glass door; even if you glue them, they won't likely survive a 2-year-old knocking them to the floor. There is a product called Le-Glue (amazon ...
RSchulz's user avatar
  • 7,512
2 votes

How to open first version of the pneumatic cylinder? (Part no 4688c01)

It might be hard or impossible to fix this so I'd rather address how to fix the issue of having non-functional element instead. You can look into acquiring a used version of the same LEGO item from ...
Alex's user avatar
  • 23.2k
2 votes

Is there a way to glue already built sets?

Use MEK (Methyl ethyl ketone). Can buy it in hardware or auto body shop supplies. In auto body work it is used to degrease and clean adhesives off surfaces. It is also a major component of ABS plastic ...
jules's user avatar
  • 51
2 votes

Re-building sets - paid services?

You're correct that it's absurd; services to build your Legos for you do not exist to my knowledge. I would try taking an evening and organizing the parts that you have. Make it a parent-son thing -...
MindS1's user avatar
  • 1,372
2 votes

What's the best way to glue/adhese the street baseplates to a plywood table?

I used double sided vinyl flooring adhesive.
user19909's user avatar
2 votes

How to glue a LEGO tree decoration in a way that's not permanent, to prevent accidental disassembling?

You can increase the "clutch" power of bricks by sandwiching a piece of paper towel between each connection. Once the bricks are together, cut away the excess paper using a knife. The effect of this ...
Pubby's user avatar
  • 5,206
1 vote

Removable glue for LEGO models

You could perhaps try hot glue in some old test parts and after a few days, use rubbing alcohol to remove the joining power of the glue. I use this method in foam planes and it separates the glue just ...
Henrique de Sousa's user avatar
1 vote

What's the best way to glue/adhese the street baseplates to a plywood table?

I used spray-on contact cement (the kind where you spray both surfaces, wait for them to get tacky, and then press together). It worked okay but the baseplates slid out of alignment over time and ...
f1r3br4nd's user avatar
  • 163

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