I asked a similar question a few weeks ago.
double pull: bad form? But it seems you have a variable that has changed over time, starting when more pulls became necessary.
Did you modify or change inks, mesh counts, stencil thickness, or squeegees since one pull was enough? Pushing lays down more ink - did you start off pushing the squeegee and recently start pulling? Is your screen cooked enough so that shit won't fall off as you print and block the mesh openings?
Recently I double pulled with Nazdar 9500 blue textile ink over a silver gelatin print because 9500 is very transparent on paper and I wanted that look - but it requires at least two pulls to eliminate orange peeling and get a nice, solid transparent blue through a 280 mesh for me.
Maybe I could have coated the screen with more emulsion to lay more ink down or used a softer/rounder squeegee, but I wanted to print at that moment with what I had and a double pull worked.
The reason I asked if it was considered bad form is because in some ways it seems like a coarse remedy to reduced ink flow if one could increase it in other, more targeted ways like increased stencil height, bigger mesh holes, a rounder squeegee etc. (although last two would not be so applicable if extreme resolution is required), without basically doubling the amount of work you must do over a print run and adding another printing event for things to go wrong.
A second pull can also introduce blurring to the image if the screen comes down even slightly away from the first hit due to play in the hinges or frame flex if wood. Since I've started using 2x4's clamped to the print table edges for the frame to fall into when lowered, I've had a lot fewer issues fucking up prints with second pulls. But even if this is controlled, other things can lead to blur like pulling first then pushing or vice versa, or really inconsistent pressure and/or angle between pulls.
But yeah, something for you has changed over time if you started to require more pulls.
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