18
votes
Accepted
Can you put PLA parts in your car (in the sun)?
No, PLA cannot be used in cars standing in the sun. Temperatures can locally get over 50 °C (122 °F).
I have printed sun visor hinge pins from PLA for a car (not exposed to direct sunlight either), ...
- 34.5k
9
votes
Can you put PLA parts in your car (in the sun)?
If you put PLA parts in a sealed plastic bag (or two to keep it dry) and simmer in water (212 °F or 100 °C), the part "anneals". The time taken varies with the part shape, but for ...
- 459
7
votes
Can you put PLA parts in your car (in the sun)?
The sun will rot most, if not all plastics, with PLA, ABS and PETG rotting to varying degrees and at differing rates. So, if even part of your enclosure, such as the edges, are visible, they will ...
- 6,192
7
votes
Accepted
Design connection to motor shaft for printed gear
Design a different connection to the shaft, however I don't know of any
Use a shaft/flange coupler to be fastened to your shaft and to your printed part.
Without knowing the length of the shaft, you ...
- 34.5k
4
votes
Design connection to motor shaft for printed gear
A good option would be to use a (set-)screw to press against the flat of the motor shaft, similar to how pulleys are mounted on stepper motors.
- 14.8k
4
votes
Design connection to motor shaft for printed gear
If you're thinking of changing materials, you're looking at the wrong parameters. PLA has a higher hardness than either PETG or ABS, but hardness isn't what you want.
The problem you're experiencing ...
- 650
4
votes
Accepted
Damaged overhang
When you get upwards facing things failing it can be because the slicer has too few top layers which makes angled faces have gaps. While you may think it is a wall the slicer sees it as top layer. Try ...
- 274
4
votes
Easiest way to build a horizontal hotend mount at home, without printing
You could cut a v-notch groove in a piece of plywood to hold one side of the groovemount neck, and then use a bolt through another piece of wood to push the neck into the V-notch.
There are lots of ...
- 6,536
4
votes
stable FDM materials
Tough set of requirements and definately pushing into the professional domain. I would recommend checking out ULTEM 1010 Resin which is similar to PEEK but has a higher glass transition temp of 215&...
- 1,061
3
votes
stable FDM materials
PEEK, a plastic known for its superior chemical and physical resilience (http://www.zeusinc.com/materials/peek/chemical-resistance-chart-peek), has been successfully used for filament-based printing (...
- 201
3
votes
Accepted
Typical plastic strength at 1500 RPM
Really the only thing that would matter for this project is the amount of torque the motor has available and subsequently how heavy your setup is that is connected to the motor. A part that size may ...
- 6,284
2
votes
Easiest way to build a horizontal hotend mount at home, without printing
If you do not have the tools to fabricate this component yourself, but have a 3D model available, I would suggest getting someone else to 3D print it for you.
There are multiple options for getting ...
- 3,987
2
votes
Damaged overhang
As @r-ahlskog pointed out, it was due to the top layers count being too low. Adding some, now it looks perfect:
- 43
1
vote
Accepted
Does VHB tape stick better on 3D prints if the surface is completely flat or roughed up?
If you ook into the VHB design document, the section "How to Prepare Specific Surfaces" describes how to treat the surface:
For higher adhesion, a primer should be used according to the ...
- 34.5k
1
vote
Some procedures to improve 1st layer
You don't get a more accurate Z height when you heat the printer and let it settle. You get a different value that will work perfectly. E.g. I've got printers that do bed leveling cold but print with ...
- 34.5k
1
vote
Can you put PLA parts in your car (in the sun)?
Just for completeness sake, one can print a casting mould and then cast UV resilient resins from the mould.
The mould would be made of PLA. Because it is quite brittle, you would need to make a multi-...
- 121
1
vote
Can you put PLA parts in your car (in the sun)?
Just minutes ago, I took a PLA part from my car that is parked in the sun, it is warped and bloated. It was wrapped in a towel, not in direct sunlight. The temperature in the car was near 60°C. I ...
- 11
Only top scored, non community-wiki answers of a minimum length are eligible