yeah they're basically just good for blowing things up or looking at references on photoshop and stuff.
It's much more of a "left brain" meme. >do you just place a grid on the ref image and copy it onto the page?
A lot of what le old masters did was thumbnails, then sketches that are roughly the proportional then they'd pop a grid on the sketch and the larger canvas to transfer the sketch to the canvas. It's a good exercise for doing bigger pieces and paintings where the goal is to look proportionally accurate. >i've never actually used grids before and didnt think anyone actually used this method
Part of the reason that Van Gogh used so much paint and strokes and stuff was to cover all the weirdly thick guidelines and grids and stuff that he drew on the canvas before things got wet.
Diffrent strokes for diffrent folks. I built this series around doing devolving types of transfers to canvas. After the first 16 or so I did a ton of graphite transfers, then year 2 was a shift to grids, with hand drawn ones sprinkled in. I'm doing it partially just to be an asshole, and partially to establish my own novel aesthetic. Most people don't necessarily need to do hundreds of them like I am but I think everyone should understand and have experience gridding, tracing, and graphite transfering.
Like in art magnet school in middle school we had a 9-week focus on using grids to blow up cartoon images like Lichtenstein. Was a good experience. If you have a folder or portfolio or something thats a good thing to practice a blow up on if you got a day and you want to do a left brain exorcism