It weighs from 2.6 to 4 kg (5.7 to 8.8 lb), with a body length of 48 to 79 cm (19 to 31 in), and a tail length of 33 to 51 cm (13 to 20 in).Unlike most other cats, the female possesses only two teats.RINNTECH dry wood borers can be run with commercial electric drills (600 W power).They are available in lengths of 150 mm, 250 mm and 350 mm.Luckily I had a friend who worked in a machine shop, who welded the bit onto a tube of same diameter and thickness.This is the tricky bit, because the join must be flush and smooth (inside and out). the end that goes into the drill is also problematic."The problem still remains on how to get the sample from the beam. You want to bend one into a L shape with the longest end being the same length of your corer.
The sample should come right out in one piece." Geoff Downes adds: "CSIRO developed a corer for a powered drill bit which should do the job. They are yet to supply a sharpening jig for others to do it." Contact CSIRO at: CSIRO Forestry and Forest Products, GPO BOX 252-12, Hobart, 7001, Tasmania, AUSTRALIA.Extracting good samples from dry wood is a delicate job.A good tool is the prerequisite for every researcher investigating construction timber.The drill I prefer is a De Walt DW245 7.8 amp 0.5 inch variable speed drill (0.00) and you can order this from my online tree-ring supply store.I will say that I've used battery-powered (cordless) drills in the past also, but prefer to use corded drills for a continuous power supply and a lighter drill.