I want to take a design I have found on the internet and modify it slightly for my own requirements.
https://www.printables.com/model/1091119-eve-weather-halterung
The basic idea would be to take this and add some flanges to the design so I could stick it to the window with some weatherproof 3m double sided tape, so that the eve weather is facing inwards and I can read it through the window.
How do I do this? Is there some easy to use software, or even an online application I could use. The design is quite basic anyway, so for my first attempt should be an essayish project.
I don't have a 3d printer, designing this myself is my first attempt to see if I think I might find one useful in the future.
Looks like enough surface area already there for decent double sided tape.
normally editing 3d print files (STLs) is not actually that straightforward! Although in this occasion the guy has also helpfully provided the source file, in Autodesk Fusion format, so that's what I'd recommend for editing it!
It's free for personal use, and whilst there is a bit of a learning curve, an evening or two on Youtube should have you master the basics, and it's actually very intuitive and quick to use once you know your way about it.
The cool thing about having the source file is that Fusion allows you to see every step used in creating the design right from the beginning, so very useful for learning!
TinkerCad. It's so intuitive that they teach it to 10 year olds.
Fusion is a fair bit more powerful, but a much steeper learning curve IMHO. TinkerCad is free, and web based. I have zero CAD education and I reckon I could do what you're asking in 5 minutes. Have a play, it's super satisfying!
Yeah, as zilog says Fusion360 especially as they have made the original file available.
Modifying the STL is a reet pain
Plenty of good YouTube tutorials - look for Lars Christensen.
3d printers are awesome if you have ideas of things you want to manufacture.
I don't want to sound like an argumentative bastard, but if all the OP wants to do is add some flanges, TinkerCad is literally a case of log in with your chosen provider, start a new project, import the STL, plonk a box on the page, resize it, then merge it with the main shape. And that is really intuitive.
It feels like installing Fusion, watching a few hours of tutorials, and then trying to modify the existing design might be a bit OTT.
Disclaimer: I'm an impatient likely ADHD idiot who pretty much only does things in TinkerCad, installed Fusion watched a few videos, tried a few things then went back to TinkerCad!
It's a great product but it's not a 'pick up and play'.
installing Fusion, watching a few hours of tutorials,
days...
I love Fusion360 and use it a lot (for CAD and CAM), but it's not quick to learn (none of the 3D CAD programs are) and I wouldn't recommend it for the OP's requirements (unless part of a greater plan...)
For those that are interested, this tutorial series is fairly up to date and excellent:
(Learn Fusion360 in 30 days by Product Design Online)
Like this?

If so, message me with your email address and I'll send you the stl
(Can make some mods if req'd)