Add a Spring to a Retainer

Mark Where you want your spring and cover marking with a thin layer of pink baseplate wax. Apply your separator at this point

 Adjust wire if needed to fit the retainer on the model.

Using a cutting burr, remove a square of acrylic from the retainer where the spring is going to go.

Bevel the edges of the square hole, this allows the new acrylic to stick better with out any delineation between the new and old acrylic.

A view of the beveled edges

Another view of the beveled edges.

Bend finger spring to fit hole you just cut out, Make sure you made enough room for the acrylic anchor on the finger spring

Wax finger spring into place with pick baseplate wax, keep in mind the boarders of you acrylic hole on the retainer

Test fit retainer into place to check for clearance of the spring

Apply Petroleum Jelly to the underside (tissue side) of the retainer, being careful not to get it on the beveled edges.

Wax retainer to Model using generous amounts of sticky wax.

Add acrylic on top of the spring. Be sure to apply monomer first to the beveled edges to prep them to accept the new acrylic.

Be sure to overfill the area so you can grind it down even with the rest of the retainer

Grind new acrylic flat with old acrylic, pumice and polish

Underside of retainer showing new finger spring and old finger spring

Underside of retainer with new spring