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.

Amazon 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. The situation is similar on eBay au. 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.

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