Roubo Is Coming… Part 21

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This weekend saw another major milestone reached for the Roubo bench build. The benchtop is completely flattened, and I’ve applied a finish to the bench (more on that later). While there is plenty left to do before the bench is complete, it is now functional as a workbench, which means that I can use the bench to finish the last elements of the build.

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This benchtop really does dwarf the No3 smoother

As predicted in my last post, jointing the bench top did not take too long, and the top is (for now at least) flat to 0.005″ over 24″ in any direction. Which is plenty flat enough for my work, and gives me a good basis for flattening the top when it moves in six months or so. After jointing the top I smoothed it with my No.3 smoothing plane. Keeping track of which elements you have worked on such a large surface area can be challenging, and so I hatched across the entire bench top with a lumber crayon. Overlaping strokes with the smoothing plane removed the crayon, and so I knew at any time where I still needed to plane. For each complete pass with the plane, I re-hatched the top, and worked the whole surface again.

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Flat

Te middle of the slab contains some pith, and the grain direction changes on each side of the pith. I therefore found it necessary to work in opposite directions from each side. The purpose in smoothing was mainly to remove the tool marks from the previous flattening operations – you could potentially skip this step if you wanted. While I wanted to remove most of the tearout, I’ve been pragmatic and not worried about removing every last spot as that would require taking a vast amount of material off the top and risks taking it out of flat. And after all, it is a workbench which will take a lot of abuse over the coming decades.

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Chamfering the corners of the top with the Philly Planes chamfer plane

Once the top was flat and smooth, I prepared it for applying the finish. This consisted of a number of small tasks. First I chamfered the top corners of the slab with my Philly Planes boxwood chamfer plane. Secondly, I taped up the two areas I do not want to get finish on – the top of the leg vise, as I will be gluing crubber to the vise jaws, and the recess where the plaque engraved by Jenny Bower will be glued. I also vacuumed any debris lodged in the splits in the top, so that these did not absorb finish. As a final step, I did a sweep around the undercarriage joinery to remove any squeeze out that had survived gluing up the bench last month. The Benchcrafted Skraper is perfect for removing dried glue without damaging the underlying surface.

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In the white and awaiting oil

With the bench prepared, I ragged on a coat of Boiled Linseed Oil. This is a good solution for finishing benches, as it is dirt simple to apply, does not create a slick surface (I want my workpieces to stay still, thank you very much), is easily applied and maintained, and will prevent glue from sticking to the benchtop. Thirty minutes later I wiped off the excess, and now the bench will sit over the Christmas break while the oil cures. The only jobs left to do before the new year are to fit the plaque and also install the Benchcrafted Swing Away seat.

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Oiled! I did apply finish tp the whole bench, even though the mixture of lighting sources (natural light and overhead fluorescent) makes it look like only some components were oiled.

4 thoughts on “Roubo Is Coming… Part 21

  1. First I would like to say that your bench looks great with the oil on it. I however have one quick question. You do have a check running along with the Pith, have thought about putting a Bowtie there to keep the check from getting any longer or do you think that check is stable now? Just curious, thanks.

    • Hi Wade thanks for the question! To be honest, the sheer mass of the bench top means that splits are both inevitable, and inconsequential. I doubt the split will extend further, but even if it does I’m not worried as it won’t have any meaningful effect.

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