Author Options:

Open time? Answered

"Example: When gluing parts together with an adhesive that has a 10 second open time, apply the glue to one component then wait 10 seconds before mating to the second surface." Wow, I thought I had to combine the two parts before 10 seconds was gone! Am I incorrect?

1 Replies

audreyobscuraBest Answer (author)2017-04-04

I cleared that up in the lesson so that it is easier to understand.

"When an adhesive states its Open Time, this duration refers to how long you have to spread the glue and allow it to soak in before assembling and clamping. Depending on the glue manufacturer open time can also refer to the amount of time that a glue has before it is unable to bond to the surface it is mating. Some kinds of glue this out as Working Time instead. Working time is the amount of time from when the adhesive has been applied, to the time it will no longer join to another surface. There is no consistent language between manufacturers.

Example: Say you're working with an adhesive that has a 10 second open time, and a 30 second working time. If you're gluing two pieces together, apply the glue to one piece then wait at least 10 seconds before joining the second piece. You then have 30 seconds to properly secure and jig your pieces in place before it begins to lose its tack and begin to cure."

Select as Best AnswerUndo Best Answer