Tips: Un-blocking plastic cement aka glue needles
Posted: Thu Feb 09, 2017 2:36 pm
A couple of days ago, I realized the metallic needle of my Revell Contacta Professional tube had clogged and cured, making it impossible to extract any glue. I had nothing thin enough to fit in the super-thin needle. The cement itself is great to work with, especially thanks to the needle which is much thinner than a sewing needle or a toothpick.
My local hobby-store suggested that I should heat the needle using a cigarette lighter.
Anyway, I lit a tea-candle, removed the needle from the tube and held it just above the flame with a pair of tweezers. Smoke, a few drops and a small flame came out of the needle, indicating the glue was melting inside.
However, it didn't melt the blob completely, so I held it inside the flame for a while.
Eureka! The blob dissolved completely!
The needle of course became full of soot on the outside. I was a little concerned soot inside would discolor the cement, but no, it did not, and the soot was easy to wipe away. Now the needle is as good as new!
Obviously, this doesn't work for glues with a plastic tip.
My local hobby-store suggested that I should heat the needle using a cigarette lighter.
Anyway, I lit a tea-candle, removed the needle from the tube and held it just above the flame with a pair of tweezers. Smoke, a few drops and a small flame came out of the needle, indicating the glue was melting inside.
However, it didn't melt the blob completely, so I held it inside the flame for a while.
Eureka! The blob dissolved completely!
The needle of course became full of soot on the outside. I was a little concerned soot inside would discolor the cement, but no, it did not, and the soot was easy to wipe away. Now the needle is as good as new!
Obviously, this doesn't work for glues with a plastic tip.