The Matrix (box lipping)

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Blog entry by BritBoxmaker posted 03-23-2011 10:38 PM 10238 reads 28 times favorited 16 comments Add to Favorites Watch

Last chance.

“Take the blue pill and the story ends, you wake up in your bed and believe whatever you want to believe, or take the red pill, you stay in Wonderland, and I show you how deep the rabbit hole goes.” (Morpheus, The Matrix)

So you took the red pill. Very well. Its probably easiest if you either print off the Ezee mitre blog or open a second browser window (not just a tab) for it and tile this one and it side by side on the screen.

Most of this boxes construction follows the standard Ezee Mitre technique with the exception of the following:

1. The size of the board is twice the height of the box plus the length of the top of the box (no allowance need be made for separation cut). In this case its square so both length and breadth of the board are identical.

2. The box bottom/top separation cut method and the lipping employed to locate the top on the bottom are different.

Once you have performed Step 1 and cut the slot for the base you break off from the original Ezee Mitre blog before cutting the slot for the lipping.
The board now looks like this.

What you are going to do instead for Step 2 is to cut a double mitre (like the one which is at the joint line for the sides and the top in the Steps 3 and 4) all around the board, centred at where the cut separation line for the box top/bottom will be.

You cut this double mitre shy of the depth of the board by 0.5mm. Like this

This last 0.5mm is cut straight through with a knife. Doing half of the cut at a time and taping the join on the outside side of the board to conserve the original alignment of the side’s top to it’s bottom.

You make a triangular lipping insert for it like the one in this diagram.

In this diagram a section of a box side is seen with the triangular lipping piece in place. The blue lines are where this lipping is glued into the double mitre. The red lines are not to be glued and to this end are waxed before the insert is glued into the board. The left side of this diagram is the outside of the box and the right side the inside of the box.

This is effectively two pieces of wood rebated to half width for the end 2mm and then mated. The whole issue masking taped on what will become the inside and then cut into a triangle.

The lipping insert.

This is what the board looks like after the lipping mitres are cut (the new step 2) and the lipping is installed.

You then return to the original Ezee mitre technique blog to complete the box.
The next step being to cut the top/side mitres.

After steps 3 and 4 the board looks like this

After Step 5 the board looks like this

You then remove the masking tape from the lipping on the inside side of the board and complete the remaining steps of the EZee Mitre blog with the exception of step 8, which you miss out entirely as the box when made should seperate top from bottom, naturally. Well you might need to persuade it a bit if some glue has crept in in the wrong place. The waxing should have overcome this problem though.

Thats all folks

Be seeing you.

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging.

16 comments so far

View BritBoxmaker's profile


4611 posts in 3397 days

#1 posted 03-23-2011 10:41 PM

Simples! As my friend Alexander Meerkat would say (UK TV ad. Go to for videos)

No Meerkats were harmed in the making of this blog.

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging.

View Cozmo35's profile


2200 posts in 3396 days

#2 posted 03-23-2011 10:51 PM

Martyn, not only are you brilliant, you are a teacher and a spreader of knowledge! I’m going down the rabbit hole!

-- If you don't work, you don't eat!.....Garland, TX

View fernandoindia's profile


1081 posts in 3304 days

#3 posted 03-23-2011 11:04 PM

Thank you Martyn.
As always, a nice and challenging journey.

Fortunately the Meerkats didn´t meet Trinity

-- Back home. Fernando

View BritBoxmaker's profile


4611 posts in 3397 days

#4 posted 03-23-2011 11:11 PM


-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging.

View S4S's profile


2118 posts in 3041 days

#5 posted 03-24-2011 12:24 AM

Ezee ? I took two red pills and I’m still down here talking to a caterpillar about tool set-ups for this one. Going to try this one day when I resurface . Thanks !

View Dennisgrosen's profile


10880 posts in 3475 days

#6 posted 03-24-2011 03:54 AM

thank´s Martyn ….maybee one day when I can find the green pills I will give it a try
I wuold deffently not try this on the yellow´s

thank´s for sharing

take care

View littlecope's profile


3072 posts in 3862 days

#7 posted 03-24-2011 10:32 AM

Very Slick Trick Martyn!!
That kind of accuracy is way beyond me and my shop’s machinery however… :-(
Well Done my Friend!!

-- Mike in Concord, NH---Unpleasant tasks are simply worthy challenges to improve skills.

View jockmike2's profile


10635 posts in 4607 days

#8 posted 03-24-2011 12:42 PM

Nice trick that would make a nice square box. If you got the good tools why not use them. YOU could probably do this blindfolded. Could you do this on a router table with a 45 degree groove bit?

-- (You just have to please the man in the Mirror) Mike from Michigan -

View BritBoxmaker's profile


4611 posts in 3397 days

#9 posted 03-24-2011 02:57 PM

Mike, You probably could however my 45° router bit is not pin sharp at the tip and it kind of ruins the mitre if its not. If yours is though I’d go for it. Check it out on some scrap first though.

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging.

View steliart's profile


2894 posts in 3049 days

#10 posted 03-24-2011 05:51 PM

very nice ideas as always Martyn thanks

-- Stelios L.A. Stavrinides: - I am not so rich to buy cheap tools, but... necessity is the mother of inventions !!!

View mafe's profile


11971 posts in 3450 days

#11 posted 03-26-2011 01:38 PM

Martyn I ate both pills… Now I’m all purple thanks to you!
Some day – some day I will take that tour, now I’ll just sit back close my eyes and dream of this wonderful woman in a tight suit.
Thank you Martyn, your are not only clever, but also with a wonderful humor, love you man.
Best thoughts,

-- MAD F, the fanatical rhykenologist and vintage architect. Democraticwoodworking.

View itsmic's profile


1419 posts in 3479 days

#12 posted 03-26-2011 11:15 PM

Very interesting and informative, and entertaining, all the great qualities of the enhanced experience of being on this wonderful site, and being blessed with fantastic woodworkers/artists, and great individuals, like yourself, thanks for sharing

-- It's Mic Keep working and sharing

View SawTooth1953's profile


339 posts in 3666 days

#13 posted 04-09-2011 04:28 PM

While this is definitely “cool”, it appears to be more time consuming and more exacting than the box bottom/top separation cut method in your original EZ Mitre. Is it? I haven’t tried it yet, so I don’t know first hand, but it seems to get away from the EZ concept… and the extra effort is all for some “lip service” (pun intended) :)
Also, I missed seeing a finished box w/this type of lipping… would you show us one?

-- Spence in Skokie, IL

View BritBoxmaker's profile


4611 posts in 3397 days

#14 posted 04-09-2011 06:59 PM

Spence. Click on this link, Matrix for a box made this way.

The purpose of the lipping method is to allow lines in the box side pattern, that are at greater than or less than 90° to the box separation line to cross this line without a sideways step being incurred, due to the width of the saw blade.

It is more exacting but I don’t do anything extra without a need to do it.

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging.

View SawTooth1953's profile


339 posts in 3666 days

#15 posted 04-09-2011 07:13 PM

Ok… I read your posts out of sequence and didn’t quite understand, but I do now… thanks.
I have another question regarding the other blog, but I’ll post it there.

Thanks again for showing us these masterful methods… and for explaining sloooowly for those of us that need it.

-- Spence in Skokie, IL

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