DTF Glossary
Choke (white underbase)
Choke moves a white-underbase edge inward relative to the colour artwork. It gives the colour a small overhang around the white backing. The useful setting depends on final print size, fine detail and the receiving print setup; compare the actual white separation and a sample before approving the job.
In practice
White prints under colour on dark garments to block the fabric from showing through. If the white layer is even slightly larger than the colour above it — or the two drift during printing or pressing — a thin white outline appears around every edge. Choking the white in by a pixel or two removes that failure mode while keeping coverage.
NestSheet offers 0, 1 and 2 px choke for the whole sheet, with 2 px as the default. The production export applies the chosen value to W1 at 300 dpi. Inspect the exported separation and a final-size sample to approve the edge and fine details.