Interesting point about the lightweight mud being too soft—I've noticed that as well, especially when trying to feather out seams. It seems like it can gouge or pill up if I'm not careful, especially with a sponge. I tried the damp sponge method after reading about it online, but honestly, I think my technique needs work. Sometimes it just smears the compound around or pulls it off in chunks, which is frustrating.
I've stuck with regular all-purpose compound lately, but I'm curious—has anyone tried mixing lightweight and regular mud together to get a balance between easy sanding and a bit more durability? Or maybe there's a trick to getting the sponge technique right that I'm missing... I wonder if timing or sponge type makes a difference.
Mixing lightweight and regular mud—I've wondered about that too. Never actually tried it, but it seems like it could give you the best of both worlds, at least in theory. The lightweight stuff is just so easy to sand, but yeah, it can be a pain when it starts to pill up or gouge, especially if you go at it with a sponge too soon.
Sometimes it just smears the compound around or pulls it off in chunks, which is frustrating.
That’s exactly what happens to me if I try to sponge before the mud’s fully set. Timing seems to be everything. Have you noticed if it works better if you wait longer, or is it just always a mess? Also, what kind of sponge are you using? I’ve tried those big yellow ones from the tile aisle, but they seem too rough. Maybe a finer, denser sponge would help, but I haven’t found the magic one yet.
Curious if anyone’s had luck with eco-friendly or low-dust compounds. Do they behave any differently, or is it just marketing? I’m always looking for something less messy, but not if it means more headaches.
Timing seems to be everything.
I’ve actually tried a few of the low-dust compounds, and honestly, I’m not convinced they’re worth the extra cost. They do seem to drop less dust, but I found them a bit harder to sand smooth, which kind of defeats the purpose for me. As for sponges, those big yellow ones always felt too abrasive—like you said, they just smear things around. I switched to a denser grout sponge and waited until the mud was almost fully dry. That helped a bit, but it’s still not perfect. Sometimes I wonder if just sticking with regular mud and sanding outside (when possible) is the least headache overall.
Funny you mention the big yellow sponges—those things always made me feel like I was trying to polish drywall with a loaf of bread. I’ve had better luck just taking my time with regular mud and a sanding pole, especially on these old plaster walls. The dust is a pain, but if you do it in small bursts and crack a window, it’s manageable. Sometimes I think the “miracle” products just add more steps than they save.
I know what you mean about those sponges. I tried the “wet sanding” trick once, thinking it’d cut down on dust, but all it did was smear the mud around and leave weird streaks. Ended up having to sand it anyway, just with a soggy mess to clean up first.
Here’s what’s worked for me, especially with old plaster or uneven walls:
1. First coat—don’t stress about perfection. Just fill the gaps and get it mostly flat. I use a 6" knife for this pass.
2. Let it dry fully, then hit it with a sanding pole using 120 grit. I keep the strokes long and even, and don’t press too hard. The goal’s to knock down ridges, not carve grooves.
3. Second coat—switch to a wider knife (10" or 12") and feather out the edges. This is where you want to be a bit more careful, but again, don’t overwork it.
4. Another light sand, maybe 150 grit this time. I like to run my hand over the joint—if I feel a bump, I’ll spot sand or add a touch more mud.
5. Final skim coat if needed, then one last pass with a sanding sponge for touch-ups.
I’ve found that working in smaller sections keeps me from getting overwhelmed by the dust. I’ll open a window and put a box fan blowing out if I’m doing a lot at once. And yeah, those “miracle” tools always seem to promise more than they deliver... The basics just work.
One thing I do differently from some folks: I vacuum between sanding passes. It keeps the dust from building up and helps me see what still needs work. Not sure if that’s overkill, but it saves me headaches later.
Anyway, patience seems to be the real secret ingredient—no fancy gadgets required.