BIDULE is a convenient lab device which avoids the hassle of having to cut a syringe and tape a balloon to inert a reaction. It allows faster and safer handling and is reusable.
The broad, serrated end is to secure an ballon filled with inert gas. The small end fits a needle tip to puncture the rubbery cap on your flask.
The conical part is useful for in inflating the balloon with PVC tubing for example.
Print broad side down, use a brim if needed.
I used infill 10-15% but I guess pretty much any percentage will work.
PLA or PETG works very well.
The author marked this model as their own original creation.