Has anyone found a solid course that goes deep on screen prep metrics (tension, degrease protocol, EOM control) and water-based ink viscosity management? I’m standardizing 45 N/cm on 156 mesh with about 1.2x EOM and targeting 3000–4000 cP at 25°C with 2% retarder, but I want structured education on measurement and repeatability rather than shop lore. If you’ve taken a weekend class or online module that covers exposure calculators, stencil hardness, and viscosity/temp curves, what moved the needle for you?
I got the most out of PRINTING United Alliance/TSeF’s Screen Printing Boot Camp — real measurement on EOM, tension, and rheology, not voodoo; details: https://www.printing.org/education. They standardize viscosity at 25°C on a Brookfield LV (spindle 3 @ 60 rpm) and EOM via micrometer delta; cups tend to mislead at 3–4 kcP. Before you go, log tension creep at 0/24 hours to validate the 45 N/cm — do you have a Brookfield available?
Backing @mikeJ34, lock in a lab-style SOP: measure water-base per ‘ASTM D2196, LV-3/20 rpm at 25°C’ on a Brookfield and chart EOM as (coated−bare) with a 0.001 mm mic — think torque wrench, not elbow feel. If a Brookfield’s out of budget, a Zahn 3 with strict temp control is an OK stopgap for repeatability. For training that teaches exactly this, check Charlie Taublieb’s weekend hands-on; do you want US-based or FESPA-side?
At 1.2× EOM on 156, I tightened repeatability by switching to a constant‑force micrometer and logging “dry EOM/mesh caliper” while holding the screen room at about 45–50% RH; that pulled my spread to about ±3 µm. For structured training, Chromaline’s ChromAcademy has a solid stencil metrics module with practical exercises: https://chromaline.com/chromacademy. At 45 N/cm, just make sure your frames are rated for it or you’ll chase warp over a weekend.
Small thing that moved the needle: add a rinse check with a TDS pen and pH strip after degrease — ‘log rinse TDS’ and keep it under about 50 ppm; it killed a lot of EOM variability for us. For structured training, MagnaAcademy’s water‑based modules plus Saati’s stencil workshop were solid and doable over a weekend. @matthew_hughes90, are you also logging exposure energy (mJ/cm²) alongside that 1.2× EOM?