Slot Mortiser (Using Templates)

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Project by woodoogolem posted 11-18-2014 06:51 PM 2315 views 3 times favorited 5 comments Add to Favorites Watch

My children will leave our house next year and so I am currently preparing myself and my small shop for the time when a whole floor needs new furniture ;-)

One of these preparations concern a slot mortiser based on Matthias Wandels plans : with the lever at the side you move the router back and forth or sideways. A crank on a threaded rod lifts the router up and down.

The biggest challenge apart from adjusting the 4 sliders was the router mount. Here in Europe the routers like the one on Matthias’ photos are hard to find – and the two I am aware of I can’t justify to purchase. So I made a contraption that mounts my big plunge router using the holes in the base for the parallel fence. Since this requires more vertical space than the original I increased the overall height by around 100mm.

At GarageWoodWorks you can buy plans for a similar machine which also features a template holder. A rod is connected to the mortiser base and follows the template. So the router cuts the pattern according to the template. Since I found this a neat and simple to build idea I added this feature as well.

5 comments so far

View Ken90712's profile


17614 posts in 3422 days

#1 posted 11-19-2014 02:26 AM

That’s a beast, great machine…...

-- Ken, "Everyday above ground is a good day!"

View joey502's profile


544 posts in 1752 days

#2 posted 11-19-2014 02:45 AM

Well done.

View exelectrician's profile


2328 posts in 2661 days

#3 posted 11-19-2014 04:12 AM

Nice adaption , do you really need the band clamp? the two rods look more than all you need to me.

-- Love thy neighbour as thyself

View woodoogolem's profile


56 posts in 1661 days

#4 posted 11-19-2014 04:02 PM

>>the two rods look more than all you need to me.

the rod at the front is the most important part as it guides the router block horizontally. The threaded rod has lots of sideways play and only serves as lift. The clamping part at the back prevents the block from from swinging around the front rod. It really is important especially under load and I made sure is as snug as possible :-)

View Rick S...'s profile

Rick S...

10923 posts in 3267 days

#5 posted 11-20-2014 11:58 AM

Vary nice Project. Well Executed and a great design! Thanks for sharing!

-- Made In Ontario, CANADA

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