What are Knob Cutters?

Updated: Jan 23

Ever look at a tool and think " What on earth is that for? ". Well thats usually the train of thought when looking at a set of Bonsai Knob Cutters for the First Time. So What are Knob Cutters?

Knob Cutters or Concave Cutters as they are sometimes referred to are a pretty simple tool tool so this shouldn't take too long to explain. Sometimes in Bonsai when we make a cut to a trunk we can often times get a knuckle where it heels if you cut flush with the tree. As the Cambium heels over it creates a Bump and sometimes this is unsightly. To prevent this from happening we have Knob Cutters! basically after you have made your cut with your branch cutters you can then go in with the Knob Cutters and create a Concave cut ( Cutting just past Flush ). What this does is allow the tree to heal flush or flat by creating room for the Cambium to heal over

As discussed in some of our other articles Knob cutters come in 2 different materials and many sizes.

If you want your tool to stay sharper for a longer period of time then go for the Carbon Steel, Just be aware that you will need to take measurements to ensure your tool doesn't rust.

If you want your tool to be rust free with minimal up keep then the Stainless Steel variety is for you, Stainless Steel tools will become blunt quicker then carbon steel though.

You can purchase your own knob cutters here https://bonsai-en.shop/collections/knob-cutters

I hope this article has helped and until next time

Happy Bonsai

If you want to further your education check out our Master Class Series Online Bonsai Course! https://www.bonsai-en.com.au/master-class-series

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