Rounded rolling rubber stamp with customizer fields

thingiverse

#### OpenSCAD program to make a stamp that is inked and applied using a quarter turn rolling motion. jStampRound.scad is an OpenSCAD program that makes a stamp which can be used to print some text, each time it is inked and applied to paper or other media. #### After you download this program(*), run it using a reasonably recent(**) version of OpenSCAD. ### Setting the text The text that appears on the stamp is set in the first customizer field. Text size and the length of the stamp surface are set in other fields. Handle height, thickness, and end-radius also can be customized. ### Use a large cylinder radius Note, this program wimps out and uses linear projection to map text onto a cylinder. This is ok if text width is small compared to cylinder radius. If text width exceeds half the cylinder circumference, some letters will be lost at each end of the text. Anyhow, serious distortion occurs if text width is much more than about 1/4th the circumference. So use a large value for cylinder radius. A future version may be able to avoid that problem by using font metrics and projecting individual characters radially. ### No 3D supports needed This item is designed to print handle-down, resting on a flat below a cylinder. The handle joins the print head via a triangular prism that removes the need for supports during printing. (*) I haven't figured out how to get this to run in Thingiverse's Customizer. (**) OpenSCAD versions older than 2015 don't support the Customizer panel; if your OpenSCAD is too old, you will need to edit the program code to make changes, instead of just changing settings in the Customizer panel. Note, the parameter `renderFirst`, labeled as "Render before view if non-zero", is 1 by default (Thingiverse Customizer apparently doesn't take `true`) which causes a noticable delay after parameter values are changed, but also ensures that an acceptable view appears. You can clear or uncheck `renderFirst` if you want to control that yourself, by pressing F6 to render (and F7 to produce .stl for 3D printing) after you make custom changes.