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!
Pla would be fine but petg is my default these days. Petg is a bit more strong and less brittle, which will help at lower temps.
Strength is just as much about design as it is about the filament choice.
After reading all of the comments and doing some research on the side it definitely looks like PETG is a great all rounder for functional prints. Guess I’m going to need a filament dryer.
PETG, ABS, ASA and TPU seem like the most common functional print materials, of course each has it’s own strength. If I end up doing ABS/ASA one day I’m doing to have to figure out a good ventilation solution lol.
You don’t need a dryer to start. I printed for many years and only recently bought a dryer. It definitely helps with older filament, but you don’t need it to get started.
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.
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/
Do you know what temperature range that is? Is 35 to 30C fine?
Yeah. “glass transition temperature” is the term to look up
Ohh. Good to know. Thanks!
How difficult is petg to print?
Not at all.