Starting with your form intersections, these are largely looking quite good - your forms feel solid and three dimensional, and the intersections themselves establish a strong understanding of how these forms all relate to one another as 3D entities. There is just one issue that I want to call out - when it comes to the spheres, you're definitely ending up with a somewhat hesitant, uneven circle. Circles are certainly challenging to draw, primarily because they really demand you to draw from your shoulder, engaging your whole arm. I feel that here that is something you're struggling with somewhat.

Continuing onto your object constructions, it is very clear to me that you've taken the meat of this lesson to heart - where the previous lessons explore more forgiving subject matter, where we don't have to be quite so hyper-precise with our measurements, proportions, and spatial relationships, this is the first one where we really have to plot everything out. It's obvious that this is your "jam" so to speak - you've done a great job and have demonstrated considerable patience throughout the process to really pin down all of the specific positioning of each detail.

I'm pleased to see that you started out with relatively simple objects, and I would have been plenty satisfied for the purposes of this lesson had you stuck to them - though you did as good a job with some notably more complex challenges, such as the hole punch. You did a great job of pinning down the precise positioning of all your landmarks, and draw highly specific curves between them to achieve the structure you desired.

You've also done a remarkably good job here of handling ellipses - although to be honest, I had (and continue to have) my doubts about the approach you described in your submission. I've seen other students try to use french curves in lieu of an ellipse guide, but it's never really worked that well. As for the compass/pencil approach, I do generally worry about anything that will have the student tracing back over an existing mark, as this tends to encourage focusing too much on how the line they're drawing sits on the flat page, rather than how it exists in 3D space. It also causes more hesitation in most cases, though I didn't really see these kinds of negatives in your work. I certainly can't complain if I don't see signs of the issue I'd like to complain about, so you are certainly welcome to continue with that approach if it continues to work for you. Just keep these points in mind, and see if they come up in your future work.

Actually, to be fair, I did see a couple cases where your ellipses got kind of wonky - mainly in the heater - but they're not so terrible. I do however feel that this one in particular was drawn incorrectly if you intended to capture a circle sitting upon that surface - but at this point I'm just nitpicking because I don't really have much else to complain about.

As a whole, your work here is very well done, and I'm very pleased with it. I feel the patience and care you've demonstrated here will serve you well throughout the rest of the course. Once you hit Lesson 7, it will certainly be put to the test - though before we get there, I suspect the wheel challenge will certainly be a good gauge of your ellipse-guide-less ways. If you do find that your approach falls short however, I really would still recommend buying a master ellipse template if possible. It's much cheaper than a full ellipse guide set, with the main trade-off being that it's limited to relatively small sizes. Still, they help a lot throughout the wheel challenge and Lesson 7.

So! I'll go ahead and mark this one as complete. Keep up the great work.