Save energy with Bonnet drill bits?!
How can you imagine saving energy by using Bonnet & Fils wood drill bits? Yet, it’s a fact established by several tests. Here’s how :
Manual test : An electric battery was fully charged, then installed under the hand drill. A single-spiral 18 mm diameter wood drill bit “made in China” was mounted on the drill to drill a 200 mm thick glulam beam. After 17 holes, the battery was empty. After fully recharging, the same exercise was performed with a Bonnet & Fils wood drill bit with equivalent specifications to the competitor’s drill bit. 32 holes were drilled… Interesting? What if you had to drill these same holes in a roof frame?
Machine test : To confirm this test, a project was set up with ENSTIB (the Epinal Wood University) with the support of CETIM. On an SCM machine, softwood and oak beams (120×120 mm section) were drilled in series with “Made in China” drill bits and “Bonnet & Fils” drill bits. After a series of 10 drilling operations, the power consumed and the temperature of the drill bit were recorded (see graph). The results are clear and confirm the manual test. Bonnet & Fils drill bits consume twice as much energy as “Made in China” drill bits.