Arunda dovetail system

Woodlandia - Arunda project

Since 2008 Woodlandia is partnering with Arunda-Patrick Burli (Switzerland) to bring to North American log home builders and timber framers wonderful Arunda's dovetail tools.

Arunda is a Swiss made system that allows to produce manually roof-frame assemblies using dovetail joints. It has been granted an international patent and was designed for a simple and efficient use.

The Arunda system was developed in Switzerland too by wood building professionals and tool manufacturers. 

To watch Arunda demo video in new window please click here...

What can I do with Arunda?

Joists & Beams	Post & Beam elements	Rafters & roof system	Other conenctions
Joist or beam on  springer flash	Post & Beams	Rafter on squared ridge purlin	Butt-n-pass corner connection
Joist or beam on springer offset	Post & Beams	Rafter on chamfered ridge purlin	Corner connection
Joist on springer at 90°, 45° or any other angle	Springer on stopped post	Rafter on plate	Butt-to-butt connection
	Springer on through post	Rafter to rafter
		Timber truss

What does Arunda consist of?  

• Arunda system uses one pair of jigs (one for the tail and one for the pin), a heavy-duty router, a special dovetail bit and a few accessories. 
• There are 4 models of Arunda jigs (there were 5 models till 2012)
• There are 2 types of Arunda systems produced:

Arunda system Type-B with fixed fences (stoppers)	Arunda system Type-N with tilting fences (stoppers)
These "A" jigs with square fences and adjustable height are intended for making all right-angle joints, namely straight or angled joists on a stringer. Although not as convenient as with the tilting fence model, it is possible to create angled joints such as rafter-ends on the ridge beam using the "A" jigs. They are made out of solid steel and are particularly resistant.	"S" jigs are fitted with sliding fences that can be tilted up to 50° in either direction. They can be used for all kinds of assemblies, whether perpendicular or angled. They are especially helpful in building roof systems which require milling dovetails on angle cuts, such as the joints on a chamfered ridge beam. The sliding fences can be adjusted to the exact roof pitch required.

There are 4 models of Arnda systems, each model works for its range of timbers          (till 2012 there were 5 models of jigs available)	Min and max possible connections

What about resistance of the assemblies?

• Please review this datasheet (click here) with "Table of working loads - Dimensioning of dovetail assembly".
• Here is another datasheet with "Table of springer/purlin weakening - compensation to offset the pin cutouts" ( please click here to download)

This data can be used by you or your engineer to calculate working loads of your timber-frame or roof-assembly.

Table of timber widths and working loads by jig model (inches) (click on the table to enlarge)

What are Arunda's benefits?

• SPEED

  

      Fast implementation of the timber frame assemblies : 8 to 18 mortise/tenon joints per hour.

• EASE OF USE

      The vertical mortise and tenon dovetail assembly is very fast and easy. No need to spread the beams to insert tenons, as with straight tenons.

• PRECISION

      The conical shape of the dovetail joint is self-tightening: The male and female parts fit perfectly and hold together. The tightening strength of the assembly can be modified and adapted to the nature of the wood (dry gluelam or solid wood).

• FLEXIBILITY

      You can produce perpendicular or angled joints.

• VERSATILITY

      Usable on a wide range of timber widths. No limitation for beams to be mortised.

• TIME-SAVING

      Identical router bit setting to cut both mortise and tenon, for all beams in the same series.

• QUALITY

      An authentically timber framed roof assembly.

• STRENGTH

      Workloads are very high: up to 3745 lbs (1700 kg) per joint.

• MOBILITY

      Jigs are just as easy to use in the workshop as on the job site.

• ECONOMY

      A low-cost replacement for metal connectors, which are expensive and take longer to implement. With Arunda, you make a one long term investment. The system is available anytime to produce joints of several sizes.

What was built using Arunda?

Please review following slideshow (just press PLAY button)

To download extended version of the presentation with more than 20 pictures in PDF file click here...

Can I use my own router with Arunda system? 

By default Arunda is intended to work with either:

• Mafell LO65Ec (2600W) router. This powerful Gemran made 3HP unit for professionals costs about US$1100-1300.
• FESTOOL OF-2200 EB
• SCHEER HM25 (HM18)

Extra option from Woodlandia only

Woodlandia makes special adapter for more economically priced Freud 3¼HP router (about US$300.00, made in Spain).

Theoretically one can make an adapter for his own router of other brands but this can require extra time, efforts and expences.

How much does it cost and how to buy Arunda?

•  Here is Woodlandia-Arunda price list available for download, please review it...
• Once you've chosen a model(s) of Arunda system please contact us and place an order
• Woodlandia will send you an invoice for your system
• We require advanced payment in full
• Delivery term: 1 week if in stock in Ontario, Canada. 3-4 weeks if not in stock (delivered from Europe)

Other useful information to read 

Still have questions? Please contact us...