Dont have personal experience but sharing some information that i have , Printing the IO cover, 24 pin cable comb, and fan grill using PLA plastic should be suitable for your intended use, assuming that the parts are not exposed to excessive heat or stress. PLA is a popular and relatively easy to print filament that is widely used in 3D printing. It is strong enough for most purposes, and it can also be sanded and painted easily, which makes it a good choice for finishing and customization.
While PLA does have some heat resistance, it is not as heat resistant as some other filaments, such as ABS or PETG. If you plan on using the parts in a high-temperature environment, you may want to consider using a more heat-resistant filament, such as high-temperature PLA, PETG, or ABS. However, if the parts are not exposed to extreme heat, regular PLA should be sufficient.
In terms of painting the parts, spray painting them with a heat-resistant paint can increase their heat resistance. However, the paint alone may not provide enough protection for the parts if they are exposed to high temperatures for prolonged periods of time.
Overall, printing your parts using PLA should be suitable for your intended use as you can read the detailss
here. However, if you have concerns about heat resistance, you may want to consider using a more heat-resistant filament or adding additional heat protection to the parts.
