Thingiverse
How to Measure Nozzle Opening Size (accurately) by selmo
by Thingiverse
Last crawled date: 4 years, 5 months ago
It can be hard to tell how big your 3D printer's nozzles are--the holes are very very small and can't be measured easily (0.2-0.5mm). After cleaning nozzles, different sizes can get mixed together. Even if they are labeled, the labels can wear off or become obscured. Sometimes nozzle openings can become larger or wear away from using metal or abrasive filaments. Or maybe you make your own nozzles and would like to test your results.
This is a test I devised for checking unknown nozzle sizes against a few known samples. It works by pushing a consistent volume of air through the nozzle with a consistent force, and measuring the time it takes. It's not super accurate, but you should be able to determine the size within 0.05mm or better.
You need
a good solda-pult / solder sucker
a stopwatch
a few nozzles of known size
this printed adapter
maybe some grease or sealant
decent reaction time
This is a test I devised for checking unknown nozzle sizes against a few known samples. It works by pushing a consistent volume of air through the nozzle with a consistent force, and measuring the time it takes. It's not super accurate, but you should be able to determine the size within 0.05mm or better.
You need
a good solda-pult / solder sucker
a stopwatch
a few nozzles of known size
this printed adapter
maybe some grease or sealant
decent reaction time