![]() Another is the fact that functions are not true expressions, but rather like macros which return a single value, and cannot have side effects.Įven so, I’ve done some work to create some new solids in OpenScad. One example is the lack of true variables within functions. I find myself having to rethink how I do programming to fit within the confines of what it is capable of. But, OpenScad has quite a few limitations as a language which make it very challenging, and downright difficult to get some easy things done. For me, it’s much easier to construct a simple to medium complexity by writing a few lines of code, rather than trying to move triangles around on a mesh, and thus my interest in OpenScad. I recently purchased Alibre Software, which is only $99 to get started, but even that I find to be a challenge to get up and running with any sort of proficiency. Most of the serious design tools, such as SolidWorks, cost many thousands of dollars, and have a multi-year learning curve to gain expertise. There are numerous tools available in the world which will allow you to do design, and export to. They are well understood, and easily turned into the appropriate tool paths needed by the 3D printer. These are simply triangle based representations of objects. Why bother? At the current moment, the most common interchange format for hobby level 3D printers is. I have been putting quite a lot of work into OpenScad to get more interesting surfaces out of the thing. Rather than being the minkowski sum of the letters and a cone so that the top surface is the original letter, and letters get wider and with rounded corners, instead I’m using minkowski() to make the equivalent of a tool path to subtract from the letters – the chamfering reduces the top surface and the outer edges of letters are the original font.ĭoes that make sense? Have a look at the 2 side by side.īoth are potentially useful – I might make an updated 3D text library module that will allow you to select either and emboss or engrave, etc.Reconsidering OpenScad Extensions Posted: J| Author: williamaadams | Filed under: Uncategorized | 3 Comments While I’m pretty sure there are some redundancies in my code, it’s actually working slightly differently… +44 7813 810 765 alexgibson3d 37 Royal Avenue, Reading RG31 4URįrom: Discuss ] On Behalf Of Ronaldo Persiano Text(some_text_here,text_height,valign="center",halign="center") Module admg_chamfered_text(some_text_here,text_height,text_depth,chamfer_depth,chamfer_width) (c) Alex Gibson: admg chamfered text module Here’s my solution to the same problem, using Minkowski… The two 2D polygons together vertex-by-vertex would.įor 3D printing it's kinda OK, because I can set the interpolation on the ZĪxis to match the print resolution, but if I wanted proper smooth polygonsįor other purposes it doesn't look great, either. That does work, but produces a much higher surface count than simply joining Positions and sizes to progressively dig out the text? What I can't do is join those two 2D objects to make a solid.ĭo I have to resort to interpolating at multiple different vertical Smaller (still 2D) version that sits at the other end of the "extrusion" but I can produce a base layer of 2D text, and using "offset" I can produce the embossed text where the 3D effect is chamfered rather than extruded out at Speaking of which, I haven't yet found a decent solution to produce engraved > 2D space: text is a 2d object and you can't mix it with 3d objects I think I just connected the dots to a big reason to work with in the
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