Vallejo Thinner medium how do I use this? - + GENERAL PCA QUESTIONS + - The Bolter and Chainsword

I've never used a thinner before. Last night I picked up Vallejo medium thinner. I've known for a while my results would look better if I thinned my GW paints a little . So how do I use this? Thanks.

Coloured Metallic Paints - + GENERAL PCA QUESTIONS + - The Bolter

Initial Contrast Experiments (from us all) - Page 3 - + GENERAL

Initial Contrast Experiments (from us all) - + GENERAL PCA

New to weathering - + GENERAL PCA QUESTIONS + - The Bolter and

How do you add texture to your bases? - + GENERAL PCA QUESTIONS +

Imperial Fists with Vallejo Game Color / Army Painter Washes - +

How to use Vallejo Paint and Thinners • Canada's largest selection

New painter having trouble shading/washing brightly-colored Space

Initial Contrast Experiments (from us all) - Page 3 - + GENERAL

Paints going funky - + GENERAL PCA QUESTIONS + - The Bolter and

Streaky Nuln oil on vehicle surfaces - + GENERAL PCA QUESTIONS +

Streaky Nuln oil on vehicle surfaces - + GENERAL PCA QUESTIONS +

Metallic/Anodized effect on base armour colour ? - + GENERAL PCA

How to thin Citadel (P3, Vallejo) paints for airbrush - Update