How Does a Stencil Cleaning Roll Improve SMT Printing?
A printer head jams mid-shift, the line supervisor pulls the stencil, and everyone stands around waiting for someone to admit the obvious: the stencil cleaning roll on that machine hasn't been changed in three weeks. This happens more often than any EMS floor manager wants to admit. Solder paste residue builds up on the underside of the stencil after every few prints, and if the cleaning roll...
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