I recently purchased this container of AK masking putty
assuming it would be an easier/better way to mask the camo pattern of a Corsair build in progress. It does work, and it works quite well as you can see from the photo
.
My review is simply that it is identical in nature to Silly Putty and is more expensive. The AK product is 80 grams for about $25 and the large container of silly putty is 113 grams for around $15.
If you don't use either of these products, I would consider them for smooth curving camo patterns.