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tack-weld

[tak-weld]
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verb (used with object)
  1. to join (pieces of metal) with a number of small welds spaced some distance apart.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for tack welding

tack welding

noun
  1. engineering short intermittent welds made to hold components in place before full welding is begun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012