Simple roll up squeezer for toothpaste tubes and similar. Parametric design in OpenScad so most things can be changed, particularly the length may be adjusted for small or large tubes. Improved version has much bigger square key as this was a weak point in original design and could break when stressed.Three parts make this up. All are in the OpenSCAD design file and may be controlled separately. Instructions in the design file for changing the major parameters. The most important one is the height which can be varied to accommodate different width tubes. Inner goes inside the main body and then nut pushes up into the inner. If the fit is loose then use a bit of glue to lock in place, . The design file allows multiple copies of each part to be produced in 1 stl file.