Tag Archives: Star-M

Drill bits for bamboo, part 2

drill bits for bamboo, forstner bit, triple cutterOn a recent trip to Japan I purchased a few more tools for working bamboo. Visiting yet another large home improvement store on the outskirts of Tokyo, the Star-M triple cutter was spotted. Not by me though: one of my kind and generous Tokyo hosts drew my attention to it. (Thanks Koh). I was too focused on locating more spurred drill bits to even notice the picture of a clean hole in bamboo on the packet.

drill bits for bamboo, forstner bitsWith a little online research it was identified, in English, as the Star-M triple cutter. It is listed in the special use category of the Star-M catalogue.  The drill bit is made in the style of a Forstner bit rather than the more common auger bit.

As a Forstner bit, the triple cutter requires more pressure than an auger bit, so it’s better suited to a drill press than a portable drill. In the absence of a drill press, I did, however, manage to drill a very neat, clean 10 mm hole in a section of dry bamboo using my portable drill without too much trouble. The small diameter probably helped here. And a measure of patience. I had to stop from time to time to clear the shavings from the hole that started to smoulder slightly. Overall though, I’m very pleased with the end result.

eBay au have a selection of Forstner bits. Although I couldn’t see any from Star-M, there are some with similar tips to the triple cutter. If you have your own drill press you probably already have a selection of Forstner bits. Do you have recommendations on the best Forstner bits for bamboo? Please leave a comment.

drill bits for bamboo, Star-M, forstner bitsThe Star-M catalogue makes for fascinating browsing (if you like drill bits). It also offers some tips on sharpening the bits. On the Star-M website you will also find this:

The skilled workers grind the spur and cutting lip by hand one by one and confirm the sharpness”

Confidence inspiring.