Airbrush masking putty from greenstuffworld is my new favorite thing. Reusable silicon putty which leaves no residue and isn't reactive at all (unlike blutack and some masking tapes). If you like playing
Reusable Elastic Putty for Camouflage Masking 80g AK Interactive
How to paint hard edge camouflage with masking putty – HeresyBrush
Work Less. Game More.
Creative: Some uses of Masking Putty. - YouTube
How to paint hard edge camouflage with masking putty – HeresyBrush
How to paint hard edge camouflage with masking putty – HeresyBrush
Camouflage Masking Putty
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Scalehobbyist.com: Camouflage Reusable Elastic Putty for Masking by AK Interactive