Glue and Adhesives

Adhesives are used to attach optics together, or mount optics in mounting rings.

Note that not all glue is easy to remove and if you return two components which you checked out separately which are glued together in such a way that they cannot be separated without damage, you will be charged the full amount of both components!

We have the following adhesives available- ask the TA or instructor if you need to use these.

Epoxy
Two part glue which hardens when mixed.  Parts should be cleaned well with soap and water and then acetone prior to gluing for a strong bond.  Epoxy is generally permanent, but can be undone by overcuring- heating the glued joint to a few hundred degrees for a period of time.  

Super Glue
Fast bonding glue for attaching glass optics semi-permanently to metal holders.  It is generally better than epoxy since it can be removed by soaking overnight in acetone.  However use of too much glue can cause a white powdery looking deposit on glass which destroys the optical properties.  Very low viscosity- pieces must not have any air gaps.

Silicone
Standard silicone caulk.  Used for non-permanent flexible bonds.  Good electrical insulator.  Can be used for potting components and filling cracks.