This simple device facilitates the use of any tube, helping to squeeze it evenly and gently. It consists of a base in a hole which is inserted the tube, and turning a key with slit for exciting a planar end of the tube. The base and key are made of wooden bars of appropriate dimensions. Their interaction is clear from the figure.
Recommend to read
RIVETS? ANY!
If you don't have the rivets you need sizes, don't rush to the store. Better fabricate a device which you can use to make rivets of all sizes. Tools required the simplest set of drill...
TO THE JEWELLER’S ARSENAL
I have been passionate about DIY creativity for a very long time. My favorite magazine, “Modelist-Konstruktor,” has contributed greatly to this. I have been subscribing to it since 1972....