With OpenSCAD and the parametric design you have to simply edit a text or a variable in a editor and after a render you can save the STL file, ready to the slicer! I will show you two examples that have facilitated my life.Įxpert, but looking in Thingiverse I have found a lot of things than can be edited using this opensource software. In these cases you can model from zero your object or try to edit it directly in your software. One less - if we have a single char we are already centred.Sometimes you have to change a little aspect, as the text or one or more dimensions, of your object before printing. Angle that measures width of letters on perimeter of a circle (and sphere and cylinder)įunction rotation_for_character(size, spacing, r, rotate = 0) = (width_of_text_char( size, spacing ) / (internal_pi2 * r)) * 360 * ( 1 - abs( rotate) / 90) They work for monospaced (fixed-width) fonts wellįunction width_of_text_char(size, spacing) = size * internal_space_fudge * spacing įunction width_of_text_string_num_length(length, size, spacing) = width_of_text_char(size, spacing) * length įunction width_of_text_string(t, size, spacing) = width_of_text_string_num_length(len(t), size, spacing) įunction cylinder_center_adjusted_top(height, center) = (center = true) ? height / 2 : height įunction cylinder_center_adjusted_bottom(height, center) = (center = true) ? height / 2 : 0 NOTE: These are innacurate because we don't know the real spacing of the chars and so have to approximate String width (length from left to right or RTL) in OpenSCAD units Internal_space_fudge = 0.80 // Fudge for working out lengths (widths) of strings

Internal values - You might want to play with these if you are using a proportional font This is much more accurate than the PI constant internal to Openscad. Internal values - don't play with these :) Defaults for Cylinder (including circle as it is on top/bottom)ĭefault_circle_middle = 0 // (mm toward middle of circle)ĭefault_circle_ccw = false // write on top or bottom in a ccw direction We try and match it here.ĭefault_rotate = 0 // text rotation (clockwise)ĭefault_extrusion_height = 2 //mm letter extrusion heightĭefault_buffer_width = 0 //mm of buffer (thickening in all directions) to add to each letterĭefault_cube_face = 'front' // default face (top,bottom,left,right,back,front)ĭefault_sphere_rounded = false // default for rounded letters on text_on_sphereĭefault_cube_updown = 0 // mm up (-down) from center on face of cubeĭefault_cube_rightleft = 0 // mm right(-left) from center on face of cubeĭefault_sphere_spin = 0 // TODO:Different to rotate? or up/down. There is an underlying value in text() - This masks that. if the arguments are not included in the call to the module.ĭefault_size = 4 // TODO - Can we make this 10? To match internal size? There is an underlying value in text() - This masks that.ĭefault_spacing = 1 // Spacing between characters. These control the default values for text_extrude(), text_on_sphere(), text_on_cube(), text_on_cylinder(), text_on_circle() TODO: Rename object to translate_vector?Īdditional arguments for text_on_cylinder():Īdditional arguments for text_on_circle():Īdditional arguments for text_on_sphere(): Locn_vector - Where the faux-object has been translated to. The above arguemnts can be seen in text_extrude() as all modules call that module evetually (often multiple times). TODO: object_center=true/false (already done for cylinder) how far it sits proudĬenter //center the text at the location it is being written (NOT that the object is centered)ĪLL faux-objects that the text is applied to have center=true Valign - baseline, bottom, top or centerĪll modules also take the additional arguments:Įxtrusion_height = depth of the letter, i.e. The arguments to be provided for each function are explictly in the modules.Īll modules take close to all the arguments to text() Great thanks to t-paul (and the OpenSCAD dev team) on adding the new text() primitive. This is a rework of version 3 of write.scad to use the new OpenSCAD internal text() primitive.Īll credit to Harlan Martin for his great effort on the original.

Openscad add text