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Re: Making adjustments to an STL in OpenSCAD? Image attached

T
terrypingm@gmail.com
Tue, Jul 18, 2023 6:52 AM

Thanks David. After watching that well made video I’m envious of Blender users. Greatly expands potential for using Thingiverse, given the high proportion without SCAD files. But adding ‘Learn Blender’ to my to-do list would not be a wise move, I regret.

--

Terry

On 18 Jul 2023, at 05:43, David Phillip Oster <davidphilliposter@gmail.com> wrote:

I found the video How to Blender To 3D Printer - The Basics | Tutorial | Blender for 3D Printing [12 min] useful for doing the kind of STL editing that you want to do.

On Mon, Jul 17, 2023 at 4:07 AM Terry <terrypingm@gmail.com> wrote:

Sorry forgot the screenshot, now attached or here:
https://www.dropbox.com/scl/fi/4nosz3eh4nq1hfwywf0op/ImportedSTL-1.jpg?rlkey=0gs7678r5rs5xvfbjkoiqf6wb&raw=1


This 16x2 1602A LCD bezel from Thingiverse printed and fitted pretty
well a few months ago, and I made a couple in anticipation of future
use.

But I'd now like to quickly make two small adjustments before printing
another in Cura:

  1. Reduce the 'lip' from 4 to 2 mm. After much experiment I think I now
    have a way of making the rectangular hole in the project case with
    sufficient accuracy to allow such a tiny overlap; we'll see!

  2. Reduce the diameters of the four tiny push-fit pillars by say 0.1 mm.
    A couple broke when I tried to push-fit, and I used hot glue. The change
    will probably need trial/error. (Unless I can improvise something. I'm
    thinking maybe a tightly folded cylinder of sandpaper?)

No SCAD file was available so I imported the STL (an excellent feature
of OpenSCAD). But is there some way to get the STL converted to SCAD
code?

I know I can Add, Difference, Translate, etc, but apparently not
directly change dimensions of the existing objects?

Terry
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