That is 1/8" external. Not sure if the straws would be strong enough.
Have used the tube from a Q-tip but they are a bit to small in diameter.
Think if the straw got a slight bend it would crease and then not be very useful.
1/8" plastic tube works as it does not crease if it bends.
The biro tube could work fairly well if the diameter is close. Fair bit heavier than the straw.
Appreciate you checking crazy.
Many thanks Norm
