I inherited a professional solder/ glue dispenser when a hearing aid amp manufacturer I worked for went under. It is a pneumatic syringe dispenser.
It allows you to control the amount of glue dispensed and has controllable suckback No drips! The unit was very! expensive back then. It is a EFD 1000 XL probably cost the company close to $2000. They still want crazy money for a refurbished unit, I just found a clone on Amazon that looks exactly like it. It is foot pedal controlled and can be set to continuous or timed dispense. I just have to find a reasonable source for the syringes. Here is a video of a different dispenser that shows what one of these can do.
https://www.amazon.com/Dispenser-Controller-Adhesive-Semi-Automatic-Operations/dp/B07QVBMWZL/ref=asc_df_B07QVBMWZL/?tag=hyprod-20&linkCode=df0&hvadid=366352853698&hvpos=&hvnetw=g&hvrand=11461732102490602969&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9004484&hvtargid=pla-795729708142&psc=1&tag=&ref=&adgrpid=76503872856&hvpone=&hvptwo=&hvadid=366352853698&hvpos=&hvnetw=g&hvrand=11461732102490602969&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9004484&hvtargid=pla-795729708142