Soldering (see RoHS), has led to a change in formulation of both solders and fluxes. Water-soluble non-rosin-based fluxes have been increasingly used since the 1980s so that soldered boards can be cleaned with water or water-based cleaners. This eliminates hazardous solvents from the production environment, and from factory effluents. Those regulations have also reduced the use of lead based solders, and caused the melting temperatures of solders in use to increase by up to . "Hot-bar reflow" is a selective soldering process where two pre-fluxed, solder coated parts are heated with heating element (called a thermode) to a sufficient temperature to
Celtic Connections Celtic Connections The Celtic Connections festival started in 1994 in Glasgow, Scotland, and has since been held every January. Featuring over 300 concerts, ceilidhs, talks, free events, late night sessions and workshops, the festival focuses on the roots of traditional Scottish music and also features international folk, roots and world music artists. The festival is produced and promoted by Glasgow’s Concert Halls. Donald Shaw, a founding member of Capercaillie, was appointed Celtic Connections Artistic Director in 2006. Shaw announced in February 2018 that he would be stepping aside from the role. At the core of the festival is the Education