Anytime I try to print a custom part it says “E1103: Insufficient storage space.” Even though I have no parts, and all of my textures are deleted. Except for the one I used to measure the part. Mind explaining that, Scrubs?!?!?!?!?!?

Something seems off... I have 175 texture files in my storage, and I'm only using 56% of my allotment. What does the percentage show for your storage space with the three images? How big is the image you're trying to upload?

Delete some of the texture files.

@kahtras... Sorry, I think you misunderstood. What I am saying is that I have plenty of storage space available even with 175 files. I don't need to delete mine right now. I was using that as an example. If you are running out of space with only 3, there is something wrong. How big is the image that you are trying to upload? And what percentage does your texture storage show? It's the number in the red box in this photo:

How do you have so many textures, but only 3 MB

I'll lay out three factors that can help with file limits:

1. Optimize your PNG files. I use [url]https://tinypng.com[/url]. This will shrink the file size down quite a bit... I've seen a reduction of about 60-75% from the original file size. This alone will allow you store 3-4 times more than you would without optimizing the images.

2. The resolution of the image are important as well. One image that's 2k (2048x204😎 takes up just as much space as 16 - 512x512 images. If you have any 4k images, you'll eat up your space in no time. I generally stick to the recommended resolution from the UV map, but there are parts that have multiple maps. I usually use UV map #4 for hips because it's smaller than the other two options. It adds up after a while.

3. Data images are really small once you optimize them. These are only used if you have metallic colors or if you're doing stickers. But if you have these, they'll take up less space than the color images. About 30% of my images are Data images.

I never use 2048 x 2048, also, at the time, I was using up 5 MB of 5 MB without even knowing. That was dumb.

how do you make a data file

This original post on this thread is obsolete... there's another one that has the right stuff, but basically the entire image should be black (Hex color code #000000) except for the following areas:

Metallic print - Red (#ff0000) | This tells Mecabricks to make that area of the brick metallic... it will be a lot more reflective, especially in renders.
Sticker - Blue (#0000ff) | This adds a bump map that makes the area covered look like it's raised... like a sticker. You will probably want to round your corners if you want the sticker to look like LEGO ones.
Metallic sticker - Green (#00ff00) | This tells Mecabricks to make the sticker metallic (or the portion that is green).

To make the file, I recolor anything that is a metallic color to red, and everything else black. If I'm doing a sticker piece, I usually use a picture of the stickered part (or a donor part for custom decorations) as a template to determine how big the sticker should be. The same as before, except green for metallic areas of the sticker, blue for the rest of the sticker, and black for everything not sticker.

[Edit]
Here's the other post:
[url]https://www.mecabricks.com/en/forum/topic/1582[/url]