3DPrinting

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3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.

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Want some advice on which filaments to use (lemmy.world)

submitted 2 weeks ago* (last edited 2 weeks ago) by idunnololz@lemmy.world to c/3dprinting@lemmy.world

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New to 3D printing (my printer didn't even arrive yet) but I have a few projects I want to start with and I am unsure of the correct or best materials to use for them.

So here are three things I want to print for sure:

Adjustable leg for IKEA BROR. This BROR rack already has a ton of stuff on it, likely in the 20 - 30 KG range so it would need to be a material that can stand that weight. It's also a garage so the expected temperature range is something like 30 to -5C
Some counter top containers to hold things. One of the things I want to hold are laundry detergents. These can be a bit heavy and some detergent can spill, not sure if this can react with the plastic. Indoor use only so the temp range is like 25 to 20C.
Mount plate for a post cap light. I will be screwing these into the post and then the light will lock on to them. The post cap light itself is pretty light however it needs to be able to withstand the elements (snow, rain) and also animals like raccoons and squirrels that might try to pry them off. Temp. range is like 30C to -30C.

If anyone has any suggestions please let me know!

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[–] idunnololz@lemmy.world 2 points 2 weeks ago (1 children)

I've read that PLA will sag over time pretty much no matter what you do. I assume it would be terrible for the first use case. I assume you can't design around it but I'm happy to be proven wrong.

[–] Shadow@lemmy.ca 3 points 2 weeks ago* (last edited 2 weeks ago) (1 children)

It'll only sag if it heats up and starts to deform, like if you leave it in the sun. It'd probably be just fine under a compressive load like that.

This is a fantastic doc https://blog.rahix.de/design-for-3d-printing/

[–] idunnololz@lemmy.world 1 points 2 weeks ago (1 children)

Do you know what temperature range that is? Is 35 to 30C fine?

[–] Shadow@lemmy.ca 3 points 2 weeks ago (1 children)

Yeah. "glass transition temperature" is the term to look up

[–] idunnololz@lemmy.world 1 points 2 weeks ago

Ohh. Good to know. Thanks!