I have some Thin and Medium CA's that have thickened up. I've heard that you can thin them back to original consistency, but can't remember what to use. Please help save my glue.
Gary

It's not worth it. Compared to the cost of fresh CA and the cost of an airplane if the CA consistency has changed that much adding any solvent is going to compromise the quality of the CA even more so that it will not have the holding strength necessary to keep your plane together.
If you keep your CA a long time... not using much at a time store the bottle in the refigerator. Make sure it is sealed tight. You can also put it inside a ziplok bag.

Acetone will cut CA, but as stated above, it's not worth it.

Vince

I have two bottles of CA, one Thin and one Medium. Now they are the most comfortable and ergonomic palm held hammers I’ve ever had . As stated previously, it’s cheaper to get a new bottle, and less of a headache!!!

Don't do it Gary. Buy new ones and store them in an airtight container in the freezer. Remember to bring the container back to room temp before opening. Any moisture condensation will prematurely cure the ca in the bottle. Good luck........