Making a masking fluid pen for fine lines in a water colour painting 

The small hole in the side of the needle allows for the needle end and the masking to flow flawlessly ... if the hole isn't there a vacuum is formed preventing the masking fluid from coming out and the only way it will flow out is by using the plunger of which is difficult to judge and can suddenly shoot out as you try to judge the pressure.. I've tried it without a hole and it shoots out and requires two hands to operate

Thanks for the tip about making small hole..you can get different sized blunt needles and syringes by the way. I use them all the time with ink.

Thank you for a great Tip

You sir, are a genius! Thank you so much!

Thank you. Will give it a go.

So smart

Thank you so much. Always trying to find ways of applying masking fluid thinly. DJM

i like it :3 good idea

Excellent

Thinks

That is awesome but why do you put a hole in the Syringe?

Where would you get such a needle??