September 3, 2010

More great drawers

Glenn, one of the readers of my blog, saw the following photo of the first great drawer I made for the stand-up desk. The joinery on the back of the drawer is shown, with no glue, and the surfaces not yet planed even – in other words, pretty much as the the dovetails came off the saw:

Glenn wrote me a short note, asking how I am able to get the shoulder on the half-pin sockets as nice and square as  I showed in the photo above. As I worked on the drawers yesterday and today, I documented how I do it. My old way of doing was fashioned after the technique of Frank Klausz – simply line up the saw with the baseline marked on the edge of the shoulder, and cut it off. Most of the time it works just fine, but sometimes I miss and cut a little beyond the line – and that creates a gap I dislike very much. My fault, of course. If you are not familiar with the pins-first technique to hand-cut dovetails, I suggest you view the three videos of Frank Klausz I shot during the Woodworking in America conference in Berea, KY, in November 2008.

I much prefer the new way I do the cutoffs these days; I wish I could tell you where I learned to do it this way, but I cannot remember. I start by carefully and lightly chiseling the baseline on the edge of the board; then I cut off a very small and shallow sliver – this leaves a nice channel for the dovetail saw, and a nice reference edge on which I can rest the saw to start the cut:

drawer-side-shoulder-2

I then carefully place the saw in the channel, and saw off the half-pin to create the half-pin socket for the pins board (practice, practice, practice, to learn to saw really close to the scribed base line):

drawer-side-shoulder

The photo above shows my preference to cut pins first; once the pins boards are done, I mark the dovetails from the pins. Note: This applies only to the through dovetails on the back of the drawers.

I chisel out the waste on the remaining pin sockets by carefully removing very thin slivers at the baseline, as in the following photo:

drawer.chop-pins

Today’s work: the through dovetail joinery on the drawer backs, for three additional drawers – two drawer backs fit very well right off the saw, and one required a little paring work:

drawers

Now I can start on the joinery to the drawer fronts. These will require half-blind dovetails, similar to the first drawer I made:

Once all the drawer joinery is done, I can start machining the drawer slips for the hardwood bottom panels. I will cover in detail the making and fitting of the drawer slips in another article.

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Fine furniture deserves great drawers

Drawers are a critical part of a project. Mario Rodriguez shared his insight into making and fitting drawers during a terrific session at the Woodworking in America conference in Valley Forge, PA. You can view a 19-minute video I shot and later edited, at this link.

As I work on the stand-up desk and prepare for the next step, Mario’s words have gained prominence. I extracted the following thoughts from that particular session, and I suggest you keep this list handy as you work on your next project:

  • What is the scale and size of the drawers relative to the size of the project?
  • Thickness of the drawer sides vs. front
  • Use of drawer slips, to minimize the risk of failure of the sides, at the groove where the bottom normally resides
  • Selection of suitable materials, with straight grain
  • Slips should be even with the bottom of the drawer sides, to increase the surface area bearing on the drawer support structure (frame, dust cover, etc.)
  • Use solid wood for drawer bottoms – and ensure the grain runs side to side, not front-to-back
  • Allow for wood movement – secure the drawer bottom using a screw inserted into a slot through the drawer bottom and into the bottom of the drawer back. Do not over-tighten the screws, or wood movement cannot take place

Now it is time to make four drawers that will fit the desk. If you follow my blog, you will remember that the drawer fronts and the front apron all came from one board of quarter-sawn white oak. This detail is important; I cannot afford to accidentally ruin any of the drawer fronts, as the grain on these is (almost) perfectly matched to the drawer fronts – in other words, I have exactly zero spare drawer fronts. I convinced myself that hand-cut dovetails would best suit this critical part of the project. For those of you who have asked in the past, I must repeat that I will not part with my Leigh D4 dovetail jig.

I spent time trying out various side and back board thickness, to get a better feel for the scale of the drawers vs. the size of the project. In the end I settled for 5/8-inch board thickness for the sides and back, vs. 7/8-inch for the drawer fronts. Drawer slips will be required to beef up and reinforce the sides; the use of slips will help minimize the risk of failure of the drawer sides at the groove that accepts the drawer bottom.

I normally am in the pins-first camp when it comes to hand-cutting dovetails; and, like Frank Klausz, I simply start cutting, eyeballing distances in the process. However, in this project I did something I have not done before: I first went through the steps of laying out the pins on the pins board, as I wanted a symmetrical look. And I also did the layout for the half-blind dovetails on the drawer sides. Then I started sawing.

I tackled the dovetail sawing with much concentration. For the back of the drawer I made a conscious effort to cut to the line on the pins board, and to leave the line on the tails boards (the drawer sides). And for the half-blind dovetails I cut to the line for the tails boards (the drawer sides), and left the marking knife line on the drawer fronts. Careful sawing resulted in very little or no paring required to assemble very nice, tight joints.

The following is my very-concentrated look, an actual action shot (!):

cutting-new-pins

The results, for the half-blind dovetails – before using any hand planes to smooth the sides:

drawer-box-half-blind-dts-front

The through dovetails on the drawer back – notice the straight-across cut near the bottom, to allow for bottom slips (in the photo after this one):

drawer-box-dts-on-back

I had a great feeling when I got to this point:

drawer-box-completed

This next photo shows a little more detail on the spacing available for the drawer slips – the slips will run the entire length of the sides:

drawer-box-awaiting-slips

I will write in a future blog entry some details of the preparation of the drawer slips, and on the machining of the solid wood drawer bottoms. In the meantime, three additional drawers await. I have milled sufficient stock, including some extras to match for color and appearance, just in case my saw starts to wander a bit:

drawer-side-boards

I hope to share with the client some of the recent progress on this desk.

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—— Al Navas

My entry in the Winter 2009 Woodworking Awards at Lumberjocks

table-knot-1

table-knot-3

table-knot-4

table-knot-2

I entered in the Category A Knot Like No Other. If you click on the link, it will take you to my entry at Lumberjocks.

This is a half-scale table I made to fully visualize proportions. And I got away with hand planing the bevel, as the grain reversed at the knot near the corner.

This little table is the model on which I will base a full-scale table I just started building. The table is fashioned after Frank Klausz’s famous table with a beveled edge. In the full-scale table, the bevel gives a comfortable feel to the arm as it lays on the edge.

Joinery: Mortise & tenon. Top thickness is 3/4 inch; the square legs are 1-1/2 inches; aprons are 2 inches wide; table height is 15.5 inches. The top is attached to the base using buttons inserted into a groove machined on the aprons – to allow for wood movement I provided a clearance of just under 1/8-inch on both of the long edges; I used screws to hold the buttons in place.

The lighter wood is quarter-sawn white oak, and the dark wood is walnut. The finish for the white oak is as follows: First, I sanded to 150 grit, followed by two thin coats of Zinsser SealCoat™ applied with a rag, followed by 4 spray coats of Target Coatings’ EM2000wvx waterborne alkyd varnish, in satin sheen. I sanded to 320 grit between every coat. This finish schedule imparts a straw color to the white oak; it is reminiscent of a vintage finish. The finish for the walnut consisted of two thin coats of garnet shellac, followed by four coats of Target Coatings’ EM2000wvx waterborne alkyd varnish, satin sheen.

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