For this homemade the author took a syringe, and here is a gum from a dropper.
The author removed the plastic tips from the gum and cut off two pieces from it.
A piece of gum, the smaller one he put in the syringe first and pushed it into the nozzle of the syringe to the end.
Then the author put a metal ball and a second piece of cut gum and tamped everything in the nose.
Like this.
Further, the author heated the needle from the dropper and made a hole in the marked place, this will be an exhaust valve.
After the hole was made, he removed the irregularities with a knife.
Then he took another piece of gum and put it on a recently made hole, and fixed it on a drop of super glue.
For convenience, the author will use just such a thick-walled PVC tube. (It doesn’t work from a dropper, as it simply flattenes it.)
Here is such a pump turned out by the author.
And now, the author is testing his pump.
Thank you all very much! See you in the next article.
Homemade video: