anneal each bend as made.
"An Introduction to Chemical Science"
R.P. Williams
When the substances to be operated upon are hard, they must frequently pass in succession through several holes, and it is in some cases necessary to anneal them at intervals.
"On the Economy of Machinery and Manufactures"
Charles Babbage
Flange one end of this tube a little, and anneal the flange well in the smoky flame.
"Laboratory Manual of Glass-Blowing"
Francis C. Frary