Hi just wanted to share I was able to fix my 98 Saturn SC2's AC Recirc/Fresh Air Actuator using Super Glue and then carefully sprinkled with Baking Soda to Wet Glue.
It's been over a year and it's still solid.
This is a common problem, the nylon sprocket cracks open. Then the actuator just makes a clicking noise, behind the glove box.
Be sure to round metal File enlarge the sprocket hole as needed slightly to make sure it doesn't fit on the metal shaft with too much tension/force which is what causes them to split in the first place.
Take care

 

Nice job. Thanks for sharing that!

 

That's one place in a Saturn I've never seen. Thank you.
I'm a chemist and could look it up, but what do you get when you mix sodium bicarbonate with cyanoacrylate based glue? I mean chemically what's the reaction?

 

Some fairly tough stuff I wish I had known about a long time ago! My go to for many plastic repairs.

 

Creates an adhesive stronger than super glue. Thanks for sharing.

Knowledge is power.

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Cyanoacrylate, also called CA glue and super glue, is a quick-curing industrial adhesive that bonds almost instantly upon contact with water ions. Often, just latent water in the atmosphere can cure cyanoacrylate, which makes it one of the fastest curing adhesives on the market. In addition to its curing speed, cyanoacrylate is valued for its exceptional mechanical strength. Even a small amount of super glue can create tight bonds instantly with everything from plastic and metal to wood and human skin.

Cyanoacrylate is an acrylic monomer that bonds to materials when exposed to water on the material’s surface or in the air. The chemical reaction between water ions and cyanoacrylate generates heat, creating strong polymer chains that link the adhesive to the product it is touching. Unlike more traditional glues, you don’t have to wait for cyanoacrylate to dry. In fact, in particularly dry conditions, you may have to add water to the surface material to initiate the bonding process.

What Happens When You Mix Super Glue and Baking Soda?

To create an even stronger and faster-curing bond, you can add baking soda to your super glue. When you mix super glue and baking soda, it accelerates the curing process. Chemically, the bicarbonate molecules in baking soda react with cyanoacrylate to create a reactive ion that more easily bonds with other cyanoacrylate molecules. These bonds establish long, polymer chains that are stronger and more resilient than cyanoacrylate-water bonding. The resultant substance is a super glue and baking soda plastic with a cement-like consistency that creates stronger, exceptionally durable bonds.

Super Glue and Baking Soda Repairs

When mixed together, super glue and baking soda’s strength exceeds that of plain super glue. The enhanced strength and quick drying time make the blend of super glue and baking soda ideal for quick surface repairs in high-traffic areas. It is also perfect for filling gaps and cracks in surfaces and repairing broken objects such as furniture. The super glue and baking soda mix also bonds more readily with plastics than plain cyanoacrylate, making it especially useful for repairing cracked plastic materials and components