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Mafell DD40P Duo-dowel System
About Mafell
DD40P Catalog Sheet
Metric to English Conversion Tables

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Mafell's DD40 Duo-Dowel Jointer has triggered a revolution in portable joining as the only portable dual dowelling machine on the market. Never has it been easier to make strong joints when fastening pieces of wood together no matter whether the joints are butted, mitered or beveled together.

Each plunge of the DD40 makes a pair of holes into which conventional dowels are pressed. The stop system allows for accurate placement of the holes so that the companion piece is perfectly aligned. Assembly is easy and can be pre-fitted prior to gluing. No clamping is necessary. The DD40 system is faster, more precise and less expensive than any of its rivals.

This tools comes standard with a MAFELL-MAX case, wooden dowels, a glue bottle, 2 anti-slip mats and drill bits. An optional dowel drilling template makes it easy to construct precise dowel holes for shelving systems.

Drilling depth: 0 - 1 9/16 in. (0 - 40 mm)
Swivel range: 0 - 90°
Chuck diameter: 8 mm (5/16 in.)
Max. tool diameter: 16 mm (5/8 in.)
Min. tool diameter: 5 mm (3/16 in.)
Revolutions-no load: 5200 rpm (1/min)
Motor universal single-phase: 120 V 60 Hz
Power input: 1.3 hp (1000 W)
Weight: 6.4 lbs (2.9 kg)
Also available in 230V (Please call)

Standard Equipment
200 special dowels 8 x 30 mm, Ref. No. 802010
100 special dowels 10 x 40 mm, Ref. No. 802020
40 special dowels 12 x 60 mm, Ref. No. 802030
2 dowel drill bits, carbide-tipped, 8 mm, Ref. No. 090097
2 dowel drill bits, carbide-tipped, 10 mm, Ref. No. 090098
2 dowel drill bits, carbide-tipped, 12 mm, Ref. No. 090099
2 Anti-slip mats, wrapped, Ref. No. 095063
Glue bottle 250 ml (empty), Ref. No. 095059
Dowel nozzle, complete, 8 mm, Ref. No. 095060
Auxiliary stop (assortment), Ref. No. 203473
Allen key
13' cord

Fast and exact: butt or miter corner joints
Fast and economical: making shelve systems with the DD40 and dowel template


Part No. Description Quantity   Price Belongs To...
203980 Dowel template 800mm with quick acting clamping device
$260.40 MAF-DD40
203434 Dowel template extension 1,600mm (63 in.)
$385.70 MAF-DD40
093281 Screw clamp for 1,600mm template extension
$26.90 MAF-DD40
093280 Screw clamp (with thread) for 1,600mm template extension
$39.30 MAF-DD40
802000 350 pcs special dowels 6x30mm
$80.90 MAF-DD40
802010 200 pcs special dowels 8x30mm
$64.60 MAF-DD40
802011 120 pcs special dowels 8x40mm
$47.00 MAF-DD40
802020 100 pcs special dowels 10x40mm
$53.10 MAF-DD40
802021 50 pcs special dowels 10x60mm
$47.00 MAF-DD40
802030 40 pcs special dowels 12x60mm
$47.00 MAF-DD40
802040 30 pcs special dowels 16x75mm
$47.00 MAF-DD40
095063 2 pcs Anti-slip mats, wrapped
$18.20 MAF-DD40
090089 Drill Bit, Carbide-Tipped, 5mm (3/16'')
$35.50 MAF-DD40
090096 Drill Bit, Carbide-Tipped, 6mm (1/4'')
$37.90 MAF-DD40
090097 Drill Bit, Carbide-Tipped, 8mm (5/16'')
$40.20 MAF-DD40
090098 Drill Bit, Carbide-Tipped, 10mm (3/8'')
$50.90 MAF-DD40
090099 Drill Bit, Carbide-Tipped, 12mm (1/2'')
$65.00 MAF-DD40
090085 Drill Bit, Carbide-Tipped, 16mm (5/8'')
$109.70 MAF-DD40


"The DD40P has been a great addition to our tool lineup. This one tool can handle tasks from joinery to boring for shelf pins. The 800mm dowel template and 1600mm dowel template extension allow for precise placement of bores and accurate repeatability. Mafell's quality has made us a lifetime customer - and there is a peace of mind that can be had knowing Timberwolf Tools and their knowledgeable staff are there to assist."
      -Joshua F. Gallet, Kaplan, Louisiana

"We purchased a Mafell DD40P some time ago, and have really used it a lot, and found it to be a solid and accurate doweling tool! We've had other brand doweling tools previously, and there is just no comparison in quality and ease of use. We switch between the 5mm and 8mm bits most often. The DD40P is a tool that's always on the bench and used every day in our custom shop. Although it hurt a bit to buy, it's been a joy to use! Jeff and his staff are a pleasure to work with, and we've always had great service and follow up. Timberwolf Tools and Mafell are certainly high up on our list of preferred suppliers to do business with. I look forward to my next tool buying experience."
      -Richard Erb, Rockside Builders, Ltd., Saskatchewan

"I'm very happy with my DD40P. I use it for many custom projects such as cabinetry, interior doors/trim, built-ins, and furniture. It's a very precise tool, and huge time saver."
      -Lee Thurber, Thurber and Son Builders, New Hampshire

"I recently purchased the DD40P Duo-dowel system. It is a quality tool and it makes cabinet assembly very easy - I use it often. I purchased the Mafell 800mm template as well. It is a useful guide for drilling holes for adjustable shelving. It makes it quick and accurate for wall units or bookcases. I recommend this template to ease the job for adjustable shelving pinholes."
      -Dimitrios, Master Builder & Design, Inc.

"The Mafell DD40P has been a valuable addition to my tool inventory. Powerful, durable and precise, it is as much at home in my workshop assembling cabinetry as it is on-site creating durable casing assemblies. The template guides add tremendous versatility and utility to an already useful tool, allowing me to align and assemble large panels, as well as drilling rows of holes. Excellent dust collection and storage in a Systainer ensures the DD40P fits in seamlessly with my other premium tools."
       -Tom Gensmer, Heritage Home Renewals, Minnesota

Also check out the KSS Cross-Cutting Systems and the Flexi-guide FX140!
Mafell KSS300
Mafell KSS400
Mafell FX140
Mafell FX140

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