I've been working with my Stanley No. 4 hand plane to smooth out a walnut board. The grain looks mostly straight, and I'm trying to follow it closely. I've sharpened the blade to a 25-degree angle with a 30-degree microbevel using the scary sharp method and a honing guide. While I can usually achieve smooth shavings, there are times when the plane suddenly digs in, taking out a chunk of wood—about 1/8" deep. This occurs at seemingly random spots, and I can't pinpoint what's causing it. Any tips or thoughts on what I might be missing?
7 Answers
Is your plane's sole flat? That could potentially be an issue too, but it might not be the main culprit here.
You might want to keep the plane at a slight angle for easier slicing, and definitely try taking thinner cuts.
Walnut can be a tricky wood. Taking lighter cuts and ensuring your blade is sharp will always help. You might consider adding a back bevel to work at a higher angle. If it’s still a hassle, a card scraper could be a better bet since it removes less material without tearing the grain.
Great advice! Changing direction can really help, and I've found angling the plane can make for a cleaner cut. Don't forget to regularly sharpen, since I’ve had to do it every 10 to 20 strokes to keep it effective. Waxing the bottom can also help!
As someone who's not an expert, I'd suggest trying to take thinner shavings and easing up on the downward pressure. Being sensitive to when the resistance changes can give you a heads up about tricky grain issues.
Have you noticed if the digging happens at the edges of the blade? Sometimes if you push too hard, the blade can flex and dig in more deeply. Also, when sharpening, consider using the ruler method to take a bit off the sides. Lightening up your pressure while using the plane can help too!
It sounds like you might be hitting areas with something called "grain reversal." Even if the grain appears straight, it can sometimes flip directions, making it necessary to change your planing direction when you hit those tricky spots.
Good call! If you go against the grain in those areas, it might resolve the issue. You could also try using a no. 80 plane if you're still having trouble.
A couple of things to check—does your blade shave hair nicely? If it digs in after making thin shavings, it could mean the grain has turned. Also, ensure that nothing is jamming under the chip breaker. Trying a very slight camber on the blade can help smooth things out too. A picture would really help us see the issue!
Good point! Cupped boards can be tricky. Sometimes trying to plane at a 45-degree angle across the board can help as well.
I doubt that's the main problem, but it’s still a good aspect to check.