Achieving optimal exposure is crucial for screen printing frames. Under-exposure compromises stencil durability and post-exposure has limited effectiveness.
- Full exposure is key for durability. Under-exposure leads to stencil breakdown.
- Post-exposure won’t salvage severely under-exposed emulsion.
- Photopolymer emulsions benefit slightly from post-exposure but won’t match optimal durability.
- Evaluate other factors before under-exposing for fine details.
- Regularly check emulsion exposure time.
- Use yellow or orange mesh for fine-detail printing.
An # 21 Step Wedge, helps you to see if your screen has been properly exposed.