- Dowelmax
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The Dowelmax Jig with distance gauge bar
The Dowelmax is a loose tenon dowelling jig manufactured by the O.M.S. Tool company in Canada. The manufacturer claims that the small manufacturing tolerances of 0.026 millimetres (0.0010 in) for the aluminium, brass and steel components of the jig ensure accuracy and repeatability. The precision manufacturing adds to the unit's cost, which is higher than other dowelling jigs.
The tool allows the placement of five dowels in one pass. A distance gauge bar provided with the jig allows accurate spacing between sets of dowels.
Contents
Joint strength
Tests by both the manufacturer,[1] and Wood magazine,[2] are claimed to show that dowel joints made with the Dowelmax are stronger than most other woodworking joints tested.
In 2007 Wood magazine compared the joint strength of various loose tenon methods and tools, with these results:[2]
Independent test
Shear Test Mortise and tenon 1,017 psi (7,010 kPa) Dowelmax 609 psi (4,200 kPa) Beadlock[3] 541 psi (3,730 kPa) Domino 464 psi (3,200 kPa) Biscuits 187 psi (1,290 kPa) Pull-apart Test Mortise and tenon 2,525 psi (17,410 kPa) Dowelmax 1,866 psi (12,870 kPa) Domino 1,486 psi (10,250 kPa) Beadlock 1,170 psi (8,100 kPa) Biscuits 766 psi (5,280 kPa) Hydraulic comparison strength testing by manufacturer
Shear Test Multiple Dowel (Dowelmax) 890 psi (6,100 kPa) Routed Mortise & Tenon 680 psi (4,700 kPa) Double Domino 540 psi (3,700 kPa) Square Mortise & Tenon 480 psi (3,300 kPa) Pocket Hole (5 Screws) 420 psi (2,900 kPa) #20 Biscuit 285 psi (1,970 kPa) See also
- Biscuit joiner — another loose tenon joinery method
- Domino jointer — another loose tenon joinery method
External links
- www.dowelmax.com — Manufacturer's official website
- Online Tool Reviews — Review of tool
References
- ^ "Destructive Tests Comparing Biscuit Joints, Mortise and Tenon Joints, and Multiple Dowel Joints made with Dowelmax". O.M.S Tool Company. http://www.dowelmax.com/jointstrength.html. Retrieved 2008-08-01.
- ^ a b "What’s what in loose-tenon tools". issue 177. Wood Magazine. 2007-07-01. http://www.woodstore.net/is17ju201.html. Retrieved 2008-08-01.
- ^ The Beadlock is a loose tenon joinery system made by Rockler Companies, Inc.[1]
Categories:- Woodworking hand tools
- Woodworking
- Joinery
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