How to Make an MFT Table Top with LR 32

Today we’re turning this $15 piece of MDF
into a $150 piece of MDF. With holes! That’s right – we’re making a Festool
MFT table top. Now the first time you do this you’re going
to have to sacrifice one piece of MDF to make a jig. The jig is a one time thing and you can reuse
it as many times as you want after it’s made. So without more to say, let’s bring out
the LR 32 system and make the jig.

I’ve got the 55” LR 32 track clamped down
to the short side of this 4’ x 3.5’ sheet of 3/4” thickness MDF. The exact placement of the track isn’t important
as long as the uncovered surface is at least as large as the MFT top. If you’re not familiar with the LR 32 system
– what it does, is allow you to (in conjunction with a Festool router, drill precise holes
at multiples of 32mm). Conveniently the MFT table top has 20mm holes
drilled at 96mm centers. So we’re just going to outfit this router
with a 20mm bit and drill at every third hole. Three times 32mm is 96mm. We’ll eventually get the 20mm bit in here,
but to make the jig it’s actually a 5mm bit. I’m going to drill a 5mm hole every 96mm
or three LR 32 steps. Do not touch the track after drilling the
holes. It’s critical that this line of holes is
perfectly parallel to the edge of the wood.

Take your track saw and make a cut. That’s all there was to the jig, and you’ll
soon see how it helps to align the dog holes. But first we have to cut this top down to
size so it fits inside the MFT. Accuracy here isn’t critical – this won’t
affect the alignment of your dog holes, but it’s still nice to get a good fit inside
the MFT, so try your best.

This is the jig in its final state. The dimensions are perfectly matched to the
MFT top and it has these 5mm holes on this side that are parallel to this edge. I’m going to put this aside now and we’ll
get started on the real MFT top. This is now the stock that will make up the
MFT top. It’s again a 4’ x 3.5’ piece of MDF
and I’ve brought back the LR 32 system, clamped it down the long side now (not the
short side as we did for the jig) now it’s along the long side – same 5mm bit, and
we’ll make a hole every 96mm. Just about ready to swap this top off with
the jig we made. There's just one final step – gotta get
this rail replaced with an LR 32 rail and put it over on the long side. To align it, use some QWAS dogs. Okay, the rail is now set up across the long
side of the table, but unfortunately my ceiling height is too short so I can’t get this
out of the way now. What I’ll do is get the screws off the MFT
top in preparation to put our jig on, and lower the table down so this can be lifted
up out of the way.

The jig is in – fit perfectly – and now
we’re almost ready for the fun part. But before I get that 20mm bit in my router,
there’s one last setup step: populating the 5mm holes with 5mm dowel pins. Now it’s just a matter of lining up the
holes on the new top with the holes on the jig… and I think you know what comes next. This part can be tedious, but if you want
good results you have to take your time. And for your own sake, wear a respirator. MDF dust isn’t very good for you. Phew! Well, that was a lot of drilling but it turned out perfect. I’ll be a lot less preserving of my MFT
tops now when I know I can batch one out in about an hour. And there you have it: my $15, square as always,
MFT top..

As found on YouTube

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