Anyone used this - Museum Glue ( I think thats the name)

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Many years ago I bought this from Lakeland , so I'm not sure of the name but I'll describe it :

Its a jar of clear , thick but malleable glue .
Bit like BlueTac but softer and clear .
It's for securing fragile things like glass or ornaments in a cabinet or shelf

Not sticky and it rolls off with no mark left .

I've tried white BlueTac before and it left a horrible sticky residue .
And there's the 3M stickies but they're very strong ( too strong for what I want )
Any suggestions what I can search for ?
TIA

Would Glue Dots work for what you’re doing? They peel off without residue and are strong enough to secure ornaments to shelves but not as industrially strong as stickies.

I haven't heard of this but will now look into it… I have been using a product called Tacky Wax in my dolls houses and miniature displays. It is a good product, but does occasionally leave marks on some surfaces.

hang on it is on the tip of my tongue

it is Sugru?

It's called Museum Gel! Available from Amazon (don't know about Lakeland).