What is best to fix gaps in warhammer models? - Sprue Goo, Milliput or Greenstuff

Welcome to Painting by Letters, I’m Hannes, and today I want to test different fillers.
I test Green stuff, Milliput, and sprue goo in this video, and use a model that has some awful gaps to see what the results are.
About me: I’ve been in and out of the hobby for the majority of my life and I want to move to improve and finish the projects I start.
I’ve got no socials atm, but please feel free to subscribe if you would like to follow on with this new project.
Music: Lands Unknown - Futuremono from CZcams Studio Library

[@jw14681]

I've used blue tack to fill in a gap before. It seems to be a heresy in the hobby to use it, but I didn't want to have to buy another product especially (for something that I would very rarely use) and I thought, Why not? Everyone has it lying around. It seemed to work okay, and I would do it again. But if anyone has any good reasons why this is a very bad idea, I would happily be enlightened. I can only think that it doesn't bond adhesively to the model or plastic, but my thought is that when tucked away filling a hole or gap, it's not exactly a region that is likely to be a contact point which is handled and could fall off or come away easily. It painted over just fine, and I presume that gives some extra protection.
Nice video, it makes using a product like Milliput seem quite accessible and do-able, if I ever decide to. Thanks!

[@PaintingByLetters]

Glad you liked the video.
Not sure about blue tack. I'm not sure why, your points are good, but I'm just not sure... It might be tacky to paint, I don't know. Something feels wrong about it but I suspect it's my prejudice you're probably right that it would work.
I'm glad it's made milliput seem accessible, but honestly it was a big surprise to me how easy it is to use. Honestly think I adore it now, many ideas to come on that one.