If you are wondering how to strop your knives, or are looking for tips to enhance what you may already be doing, we're here to help.
While there are many different kinds of strops, and varying opinions on the best method, the goal is always the same: to keep your knives super sharp.
Dull knives are downright dangerous. They are also MISERABLE to carve with. Regular stropping is an important way to keep your knives scary sharp.
Some wood carvers never use anything other than a strop to keep their knives sharp.
Stropping is also sometimes referred to as honing your knife.
Strops that are made from different materials, including:
Some carvers even use tennis balls to strop!
There are also all kinds of different sizes and handles for strops.
Some strops have multiple sides to apply different compounds. One side may be a little courser than the other.
If you are first learning how to strop, you may want to experiment to determine what type of strop you prefer.
We will show you how to make a mini-strop with cardboard that you can easily throw into your carving kit. It is inexpensive and can be made in any size. You could also make your own strop with a piece of leather from an old belt.
Softer material (like leather) may strop your knife edge more quickly, but the softness may increase the risk of rolling and rounding the bevel of your knife (the surface that has been ground down to create the edge of the knife actually folds over on itself).
Using a strop with a harder surface (like cardboard on wood) may take you a little bit longer to sharpen your knife, but there may be less risk of rolling and rounding the edge of your knife.
Some say all compounds are alike, particularly the green or gold compounds. Abrasive compounds also come in other colors, including white, silver, red, black, and tan.
If you are carving figures or caricatures, you may want to try green, gold, or black compound to see if you have a preference.
Inside our own home one of us swears by green compound while the other is faithful to black compound, which tends to be more abrasive.
Compounds also come in different formats, including:
Whatever you use, you want to cover your whole strop with compound. You only have to do this once to enjoy many stropping sessions.
We personally do not like the smell of the wax bars on our fingers and prefer (black) paste in a tin. A little goes a long way. Seriously, you can probably go months without having to add more compound.
Some wood carvers like to warm up their leather strops with a hair dryer because they believe it helps them rub in the compound.
The process of stropping removes a tiny amount of metal from the knife and brings your knife edge back to life.
As you move your knife back and forth against a strop, you will notice black marks on the strop. That's a good thing! It means that microscopic pieces of steel are being removed from your knife.
Stropping can also help shine your knife. If you can see a reflection (like a mirror) it means you have done a good job.
Each wood carver may have their own "special sauce" when it comes to how to strop their knives. As always, take what ya like from us (below) and leave the rest:
Some wood carvers like to do 10 strokes with their knife one way and 10 strokes the other way, then 9 strokes, then 8, etc. for over a hundred strokes in total.
Other carvers we know believe you only need 5 strokes on each side and work backward to 1 stroke each side.
You can also go back and forth with single strokes.
It is really a matter of personal preference and what works best for you.
When learning how to strop, keep these key tips in mind:
Here's how to make a mini-strop that we love:
Cut out the cardboard and glue or tape it onto a strip of wood. Use a vise or a couple of rubber bands to keep the cardboard in place as it dries
Some manufacturers (like Flex Cut) make special ridged strops that make it easy to strop gouges. You still need to apply your compound. Stropping without compound won't sharpen your knife very well.
Another alternative is to create ridges in a block of basswood to sharpen your gouges, or glue multiple pieces of cardboard together.
Personally we don't see the need to clean a strop, especially with one made from cardboard, or an index card. You're just removing good compound from the surface.
Some carvers do like to clean their leather strops every now and then with a course pad, stiff brush, or a file.
Do not use sandpaper as it can leave residue that could damage your knives.
We strive to do a full stropping session before starting a carving session. Every half hour or so, we strop 10-15 strokes per side (more if we feel the knife is really dragging).
That's generally enough to keep our knives cutting well over time. When you start with a high quality, sharp knife, it doesn't take too much effort to keep it sharp.
Yes! Some wood carvers rely on the paper cut test method to determine if their knives are scary sharp.
You can also try the knife on the end grain of basswood, which tends to be hard to cut. If your cut is quick and clean, your knife is probably sharp enough.
In our opinion, there is no need to overthink this. However, if you want to learn more about the science of sharpening and achieving perfect angles, check out the Science of Sharp blog.
Otherwise, if your knife cuts well and feels good, you're all set to go.
Our philosophy is that if stropping alone no longer makes our knives super sharp... or we've nicked or damaged the knife... then we use other tools to sharpen our knives.
But that's a whole n'other ball of wax that requires a separate comprehensive article.