DTF on T-Shirts

DTF Printing on T-Shirts

Cotton is where DTF beats sublimation outright — sublimation needs polyester, DTF bonds to cotton and blends.

Substrates: 100% cotton, 50/50 blends, tri-blends

Settings that work

Temperature	150–160 °C (300–320 °F)
Press time	10–15 seconds
Pressure	Medium-heavy, 4–6 bar
Peel	Cold peel (wait 10–15 s)
Wash care	Inside out, 40 °C, 25–30 washes

Settings are a starting point, not gospel. Film batches, ink lots and press calibration all shift the ideal number — always pull-test a sample before a paid run.

What goes wrong, and how to fix it

Problem	Fix
Cracking after 3 washes	Under-cured. Raise temp 5 °C and add 3 seconds, then re-test on a scrap shirt.
Edges lifting on 50/50	Too little pressure. Blends need 5–6 bar and a 2-second pre-press to flatten the seam.
Stiff hand feel	Too much powder. Shake off excess before curing; a light dusting is enough.
White ink looks grey	White layer too thin. Check white ink circulation and print 2 white passes on dark shirts.

Good fit

Dark and colored cotton where screen printing setup costs too much
Small runs of 1–50 pieces
Photo and gradient designs

Where it fails

Nylon and coated polyester (adhesion fails)
Stretch fabrics above 15% elastane

What to buy for t-shirts

Weekly volume	Machine class	Why
Under 20 shirts a week	A4 or A3 desktop + heat press	A4 covers logos and kids sizes; A3 adds full adult backs. Both run on a normal desk.
20–60 shirts a week	A3 (33 cm) + shaker + oven	This is the volume where hand powdering becomes the bottleneck, not the printer.
60+ shirts a week	60 cm dual head + 60 cm oven	Gang sheets and a matched oven width. Two heads cut print time roughly in half.

Volume bands assume one operator and a standard 38 × 38 cm press. Verify with a sample before committing to a machine size.