Stuck increment cores are commonplace. Free the stuck part with this simple and safe solution without damaging the care sample of the increment corer. Made from transparent acrylic, simply thread the ejector over the corer end, and the pin at the base pushes the stuck part up through the corer. The corer threads are protected from damage. No moving parts, robust design, available for increment borers from different manufacturers. Can also be used to protect corers in transit or storage. Also available for the 7mm dry wood borers.
Core Ejector (for 5/7mm cores)
Sharpening set and cleansing set
Available for 5 and 7 mm borer
High-torque battery driven electric drill (FEIN, BOSCH, or MAKITA): dry-wood and increment borers directly fit into the drill chuck without need of any adapter
Increment cores from dry timber / beams:
beams in (historical) buildings or structures, timber bridges, poles/piles
full-size timber, glue-lam beams
can be used with conventional battery driven drill (13mm)
can be resharpened
Application in dendrochronology and wood science as well as in timber inspection: for analysis of tree rings, wood density, wood/glue condition, cellular structures, …
For taking 5mm (~1/5″) increment cores from trees and (intact) timber
2 threaded (2N) for hardwoods, others 3N
limited usability in deteriorated timber
driven manually or by portable drill
can be re-sharpened
For current pricing and to learn more, contact
Dr. Julian Dunster North American distributor for Rinntech Inc.
Tel: 778 977 1395 (C) or 778 433-8465 (O)
(Pacific Standard Time Zone)
This website is owned and operated by Dunster & Associates Environmental Consultants Ltd. as a North American distributor for Rinntech Inc.