Putty Basic Type

I've tried both the Tamiya and the Testors putty and personally I find the Testor's one to be better. This putty dries really quickly on the outside, so if you don't move fast enough the outside of the putty dries and hardens while the inside is still soft and liquid-like. This makes it messier and harder to apply, in my opinion. The Testor's one dries uniformly and is easier to work with in my experience.

Like most modelers, I used Squadron Green putty for years, sadly, it is no longer available. I tried the Tamyia Basic type putty and Testors Putty. Both are equal to Squadron putty: both fill well, both sand well. The only differences I see are the containers. For the Tamyia putty, an applicator tool is essential. The cap is a large diameter and short. The Testors is in the old familiar tube which makes application easier in small areas. The applicator tool is still usable, but may not be always needed for Testors. Do not use either putty as a nose weight because it tends to soften the plastic and may ruin your model. Both will accept paint equally.

I used to swear by Squadron green putty - until the last tube I bought, and I couldn't get rid of the pinholes, even after several applications! After buying a tube of this stuff, no more pinhole problems, finer grain, sticks well to plastic, wet sands easily (I never dry-sand on plastic). Caution: Will probably mar the plastic finish if you get it where you don't want it, but that's what makes it stick so well.