Jason tends to browse Instagram A LOT for 40k inspiration and he’s seen Vallejo Plastic Putty mentioned in quite a few posts as an alternative to the GW Liquid Green Stuff. He decided to pick up a small bottle and give it a try.
This is what the bottle looks like (you can find it on Amazon, eBay, etc). First, he tested it out on an Eldar Jetbike (small spot) and was amazed at how well it fills gaps and how easy it was to remove. He’s currently putting the finishing touches on assembling an Eldar Wraightknight and the model is filled with gaps where the plastic didn’t quite line up or close tight…
Put a small amount onto the model over the seams and let it dry for about 10-20 minutes. It’ll cure just enough for you to scrape it off with a hobby knife but the putty will stay in the seams. Let it dry over night before you start to sand, prime or paint.
Here’s a quick shot of the Eldar Wraithknight legs and you can see how the gaps are now all filled in. Just need to do some minor sanding of some areas and the model will be good to go!