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Waterfall slab #2: How to cut a waterfall slab with no straight edge

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Blog entry by Tmanpdx posted 06-06-2019 10:23 PM 390 reads 1 time favorited 2 comments Add to Favorites Watch
« Part 1: Joining two slabs at endgrain Part 2 of Waterfall slab series no next part

You can get on Youtube and see a lof of waterfall slabs. What you won’t find on Youtube is a way to cut a slab where you don’t have two straight edges on a REALLY LONG slab – like almost 7’ long.

In my testing with my Festool track saw and an 8’ track, I was not satisfied with the straightness of the 45 degree bevel. Two things occurred – one, I was getting some flex in the track and two, the 45 degree was not as tight as I’d like it.

So I decided to do it on my table saw. But while I had one straight edge, I had to fabricate a way to do the other side. Here is how I did it.

Starting Chestnut slab: (how I joined this is covered in the previous blog entry)

As I would be using a Festool Domino, before I do any cutting, I need to make marks that I could use for alignment.

Then I need to mount this to a piece of 1/2 plywood. I had to calculate where the cut would be and ensure I had enough screws on either side. I countersunk the screws so they wouldn’t impeded the sled.

With that, the first cut is ready to be put through the TS:

Then the 2nd reversed 45 degree bevel was done – with my STRAIGHT EDGE of the plywood!

Then it’s the Festool Domino time:

Then a dry fit to ensure everything is OK

Then the glue up!

Post glue up:

Closeup of the Butterflies – I was especially proud of how I split the butterfly so nicely:

I mounted this to a support that would also provide electrical runs / flush mounted lights to the bottom. Here is the early stages of fitting it:

The end result was pretty sweet. The client was happy!

I hope this gives some people some ideas on how to do Watefalls with long, uneven slabs.



2 comments so far

View avsmusic1's profile

avsmusic1

423 posts in 1080 days


#1 posted 06-07-2019 03:59 PM

wow…. i’m so glad i clicked this one
gorgeous

View chrisstef's profile

chrisstef

17921 posts in 3401 days


#2 posted 06-08-2019 01:19 AM

Holy crap.

-- Its not a crack, its a casting imperfection.

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