I have a large LEGO project for school that I am hoping someone can help with. The project involves building a large LEGO sculpture requiring assembly with "glue" as it has to be on semi-permanent public display and will be manhandled by kids. After 6 months of display, we would like to recover the 50,000 LEGO pieces, so I am seeking a glue that has the following requirements:
- Glue, adhesive, sealant or finish that holds bricks together solid. - does not eat ABS plastic (aka LEGO) - clear and transparent so it does not effect aesthetics, should dry to the same gloss of the original bricks - water soluble (pieces can be soaked in hot water, possibly requiring an agent also that is safe and environ friendly but ideally just water) that completely recovers the bricks and does effect the original finish. - a non-instant 'open' dry time (say, 12-24 hours) to allow for correction of mistakes - Sprayable since idealy it would hold on the outside so I don't have to reassemble glued -or- easy to apply (a glue stick or multiple-use tube or dispenser) and work with (does not bond to fingers, easy clean-up). - relatively inexpensive (not Elmer's but not industrially expensive) - few fumes during use and none after drying
Does such a glue exist?
I have experimented with several glues and am currently using watered-down Elmer's Washable glue sprayed in a light coating. It has many of the above characteristics but the finish is slightly dull and it's so watery that I cannot spray to an even coat (it drips and then pools at the edges giving a uneven, bumpy look). Thank you for your help!