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3d - Printworx

Altering .stl files?

Started by Bad Raven, Wednesday,July 17, 2019, 08:03:46

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Bad Raven

Along the way I have collected a couple of .stl files that I would like to alter. I have no access to the original files.

The trouble is that ALL the 3D programs I have load them weirdly, differently for each program, maybe way off position, or way too big (beyond scaling down) or load but then unable to "get hold of" them (or worse!!)

Years ago the then 3D programs used to work at poly level such that you could grab points and move/reshape them, but how to do that now?

As an example, one quite complex file part is shaped exactly as I want it except its compound curved outer edge is 5mm too narrow on one side only. I need to alter this out 5mm, while keeping its current perimeter shape and thickness while also not altering the rest of the part.

Is this possible from a .stl file start point, and if so how please?   :help:
HobbyKing Fabrikator II Mini, 100x100x100. (a Malyan printer re-badged) - Modded with magnetic Flex Bed

Original Prusa i3 Mk3 (All Black)


Have you tried Tinkercad you can import to that  ~~


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Bad Raven

Thanks  ~~  Done it.

Blender, Meshmixer, FreeCAD and Fusion360 ALL did weird things to the .stl on Import, Tinkercad just loaded it with (not unusually) it only needing 90 degree flip to bed.

I'd struggled with Fusion 360 for half an hour plus but was unable to get it back to the right size, let alone right orientation or back to align on bed, just nasty!  :angry:
HobbyKing Fabrikator II Mini, 100x100x100. (a Malyan printer re-badged) - Modded with magnetic Flex Bed

Original Prusa i3 Mk3 (All Black)

Sweet Pickle

Converting a mesh to a solid is generally hard going.
All the software I've tried had struggled with one aspect or another.
On balance DsMechanical does the best for speed.
Fusion360 best overall but it's not slick. You have to do a lot of groundwork to get the solid editable with any degree of satisfaction.