Friday, July 25, 2008

Cabinet base (2)...

I have let the components of the cabinet base or the cabinet stand sit for a couple of days to have them release any internal tension from the resawing operations performed earlier. This tension is due to the interior part of the wood not being as dry as the outside , therefore typically contracting inwards to form a concave form. After a day or so I began to plane the legs a small amount to create flat reference surfaces on two adjacent sides. I then use these perfectly flat sides to dimension the legs to the proper thickness all around. This is one area where it is best to take the time and do it right regarding the judicious dimensioning. I monitor the leg stability every so often, making sure there is no bowing or twist occurring from pent up tension. Th extra material I had left in each dimension would allow me to remove this safely if it does occur. I have also highlighted the grain orientation of the legs and aprons.

I also have the parts for the four aprons almost ready, they are rough dimensioned at this stage with a flat reference surface. I also check this flat reference surface periodically to confirm that it is still flat and not cupped, bowed, etc. When these base or stand components have stabilized further, I will dimension them to the finished sizes. Afterwards, I introduce a taper to each of the legs which I perform initially with the bandsaw and then handplaning the surfaces flat. I also have the blank for the drawer faces selected. The blank is a straight, fine grained Santos mahogany and from it I will rough cut three drawer faces.

Well, it's that time of year again. My wife and I are off to the mountains for a few days of hiking, kayaking and relaxing. With our warm and humid summers up here, we like to go to the mountains as it's cooler and drier. I'll continue where I left off when I am back.

Wednesday, July 23, 2008

Cabinet base (1)...

We have decided to go ahead with a cabinet base of the European beech. The process of creating a base from the beech slab involves a few steps. Initially the slab is partitioned for optimum use and minimal waste with an important consideration to grain orientation. Ideally, the slab is quarter-sawn. This particular slab is a cross between rift-sawn and quarter-sawn but I do need to pay attention to how the grain is oriented on the individual pieces. Ideally, the grain should be straight along the length of the aprons and all faces of the legs. The grain pattern in this case is diagonal to each face and not parallel to any of the four faces of the individual legs. I will saw the four leg blanks from the larger pieces I have already sawn with this in mind, and the possibility of re-orienting the leg blank within the larger piece of beech.

The original beech slab has now been sawn into three parts. Two of the three parts comprise the legs and the remaining part is utilized for the aprons. There are a total of four aprons, front, back, two sides. I'm cutting this slab in three stages leaving the sawn pieces to stabilize and to release any internal tensions. Since the original slab is resawn into smaller pieces, internal tension in the slab is released when resawing occurs. This isn't a hard and fast rule but in my experience occurs every time. I have also sawn the pieces oversized to allow for sawing at the next stage and the possibility of any cupping or bowing from internal stress. I leave these three sawn components to stabilize for a day or so before proceeding to the next stage of rough cutting the actual pieces which comprise the cabinet base.

Friday, July 18, 2008

Cabinet base design (1)...

The other option of wood for the cabinet base is European beech from the same slabs I used to build the cabinet itself. This would provide a uniform color between the cabinet and base. I need to weigh this uniformity vs. the contrasting wood and color of a mahogany base. Since there is a client involved in this commission, the best thing for me to is defer the decision to the client. In the meantime, I have possibly found just the right slab of beech to be able to accomplish the build of the cabinet base. The cabinet base will be composed of four aprons and four legs. I have a slab of European beech with possibly enough wood to cover these eight components. Another option I have is to have the cabinet floating above the base, this would involve two more components.

In the photo, the beech slab is marked at one end with the divisions of the different components along with a small percentage of waste and dressing for each component. If the decision is made for the beech, this will be somewhat of a challenge for me. There is little margin or error when slicing this slab, with almost no wood to make spare pieces. Forgot to mention, this is the last of the European beech I have in my studio, and would need to source some more if I need it. It is not readily available in my area. Since I love challenges, I'm looking forward to this if the client decides on a beech base.

To be continued...

Thursday, July 17, 2008

Cabinet base design...

I'm picking up where I left off on the beech cabinet I began a few weeks ago. The cabinet itself is fairly complete except for three dovetailed drawers. I will build the drawers only after having decided on the type of wood to use for the cabinet base. The reason I am doing this is to bring some of the color from the cabinet base up to the cabinet itself. The very first step in this process is to select the type and color of wood to use for the base. I have the option of either making the base of the same wood (European beech) as the cabinet itself, or selecting a contrasting wood instead. If contrasting, how much variation in the color and grain pattern also.

I've been mulling over this for a few days now as I complete some smaller items in my studio. It is not a simple decision as it can affect the complete aesthetics of the piece. I need to consider if the eyes are going to be drawn away from the upper cabinet and how much so. I also need to design the cabinet and base to be in harmony with each other. I have the actual design in mind, the stumbling block now is the color and which wood to use for the base.

In the photo, I have a fairly large plank of mahogany I have kept for quite a while now. The plank is rift-sawn and has ribbons of color in it, although subtle. Using this wood would provide the base with a reddish-brown color once the patina of the wood has developed completely. This is something that should always be considered when selecting woods for a piece of furniture. after a number of months or years, what color will the wood finally attain. It is important when using two colors or tones of wood, as the initial contrast might either become subdued or more pronounced over time.

This is one option I have, to use this plank for the base components. I should decide in the next few days however...

Saturday, July 12, 2008

Perspective on design (1)...

I sometimes ask myself, what constitutes good design. Is it the aesthetics of the piece, the pleasing proportions, the balance of form and function... or all these characteristics combined? Taking a step back, the aesthetics and pleasing proportions are definitely at the forefront. I'm usually drawn to a piece of furniture that stands out with respect to the "look" of the piece. This one characteristic causes me to stop and further examine the piece by trying to understand what has drawn me to this particular design over another design on the same page. This analysis helps me in my own design process as I better understand what characteristics of a piece of furniture I am drawn to. Of course, we all have different styles of furniture that we are drawn to, but the common theme is good design. I am convinced that even an admirer of period styles of furniture will stop at a well-designed modern piece of furniture to further analyze it.

We've all heard the saying that everything has already been discovered or invented. I have even heard of this saying applied to furniture design. After all, we're re-shaping the same objects over and over... adding curves, changing proportions, adding ornamentation, removing the ornamentation, using darker or lighter woods, utilizing curves, replacing curves with straight lines, utilizing thicker or thinner components, etc. It is easy to come to this conclusion, however, I regularly see new pieces of furniture that make me sit back and say "wow, that is an interesting design".. or "that is a cool design, I wonder if it's been done before". In light of this, I think the boundaries of design are limitless, one just needs to think outside the box. Also, I feel that often using pre-existing styles as templates for a new design sometimes handicaps the designer , the designer subconsciously has the existing style in mind and cannot get past it. Sometimes it is better to begin with a clean slate, in our case, a pad and pencil and begin to sketch without any existing furniture designs to influence our design. All for now...

Thursday, July 10, 2008

Perspective on design...

This is a previous post, but I never did continue the discourse. I find it fascinating how furniture design has evolved over the centuries. If we go back to the middle ages and the era before, quite a few developments in furniture construction techniques were in progress. Prior to this era, in the centuries before, very little furniture was available, it was considered a luxury to have chairs, tables and cabinets. The larger, more finely made furniture of this era was typically destined for the aristocracy of the time as a display of their wealth and status.

Most conventional furniture of these early periods was assembled without consideration to wood expansion and contraction or wood movement. This worked for many years, since the interior of buildings in this era was often at the same temperature as the exterior. With the advent of heated interiors, wood movement became much more of a factor to deal with in construction and design of furniture, and the practice of simply assembling wood planks together to form furniture needed to evolve. It was in the middle ages that frame and panel construction was adopted. This technique allowed a solid wood panel to literally float within a wood frame composed of rails and stiles. The solid wood panel could expand and contract on a seasonal basis, and not cause any structural failure within the furniture.

All of a sudden many more possibilities were created for furniture design and its widespread appeal began in earnest. Furniture also began to become more affordable as of the 18th and 19th century, more furniture makers existed and sound construction techniques began to become standardized. There are numerous periods over the past centuries and each of these had a style or styles associated with them. Additionally, each country had a style of its own within these periods. One can see how similar furniture design principles were adopted by successive countries over the different periods. Popular furniture styles which are widely recognized have familiar names such as English Chippendale, German Biedermeier, American Federal and Arts & Crafts, French Art Nouveau, Italian Rococo, etc. The evolution continues to more recent styles such as Modern Swedish ( Krenov style) and Contemporary styles.

One interesting tidbit is that a style of furniture is never really defined until the particular period has elapsed, almost like looking through a rear view mirror. Today's styles might be referred to as a particular period of style, but only after the period has lapsed. In the photo, a small swedish modern styled tabletop cabinet . To be continued...

Tuesday, June 24, 2008

Dash almost complete...

In my last post I had the dash veneered on both sides and the cutouts for the gauges and switches prepared . I am now kicking myself for not taking a picture of the dash panel when I received it and the dismal state it was in. In any case, I began to apply the finish which consisted of a lightly tinted danish oil, the tint a light colored shade of walnut. After I let this dry for two days, I began to apply the top coat of a wipe-on polyurethane. Since the dash panel is exposed to temperature and environmental extremes, humidity, and possibly direct sunlight, polyurethane is a good finish to seal out the elements. The original dash panel delaminated and the veneer was flaking off due to these same environmental extremes, so I had to make sure the correct finish is applied.

I'm just about done with applying the multiple coats of this wipe-on poly with light sanding between coats with fine sandpaper. The back of the dash panel is similarly top coated with a polyurethane finish along with the continuous edge of the dash panel and the gauge openings. I'm trying to leave nothing to chance with respect to moisture or humidity permeating the dash panel.

In the photo, I have a portion of the dash panel. The bird's eye figure stands out well and is deep and vibrant. Next I will complete assembly of the small glove box hardware and ship off to the owner. From what I understand the restore of the vintage TR6 is going to be complete in a matter of weeks and I also look forward to seeing the dash in the car. If you click the image you can see more detail in a larger photo.

Thursday, June 19, 2008

A different type of woodworking...

I've been tasked with reconstructing the wood dash panel from a vintage British automobile which is currently being restored. The dash was previously veneered and after about thirty five years, it succumbed to the elements and began to delaminate. Along with this, the original veneered surfaces were cracked and flaking off. This is a type of work I have not done before. The only effective way to remove the veneer completely and uniformly was with a sanding machine. After performing this on either side of the dash panel, I had clean wood underneath. The wood was high grade plywood with many plies. I judiciously re-laminated the laminations which were separating, which was no small feat. Once I was completely satisfied that the plywood dash had regained its strength and rigidity I began to plan the application of veneers both on the face and back of the dash panel.

The veneers were applied one at a time, beginning with the back of the dash panel. I cross banded or alternated two layers of the back cherry veneers to add rigidity and strength to the dash panel. I next cut out the multitude of holes from the back along with screw holes and rectangular cut-outs. I used reamers, sanding pads, and small half-round and round files to accomplish this.After I was satisfied with this, I applied veneer, bird's eye maple, to the face of the dash. Similar to the back, I re-created the holes, cut-outs, etc. from the front. Next, I veneered the glove compartment box door following the same procedure.

In the photo, I have just completed veneering and sanding the dash panel, glove compartment door, and have it fitted in its opening. Some more small detail work and I am almost ready to apply finish to the dash panel. There were some stressful moments in all this, veneer being so thin with very little margin for error, but it seems to have worked out. I thought I would share this experience.

Thursday, May 29, 2008

Drawer cases installed...

After some deliberation, I decided that I really like the drawer case layout and went ahead and permanently installed them in the cabinet. The mounting method I arrived at is actually quite straightforward. The right hand drawer case is pegged to the bottom of the cabinet with four short dowel pieces. It is not directly attached to either the back or right side of the cabinet with this method, eliminating any wood movement issues however small they might be. The left hand single drawer case is also not directly attached to the cabinet side or back for the same reason. Instead I created a small platform for the left drawer case using two pieces of beech with grain in the same direction as the rest of the cabinet.

The two pieces of beech are directly below the left drawer case on either side and do not extend completely to the front, but approximately one half the distance. The drawer case can be considered to be cantilevered on this small platform. Also, to make the platform sides somewhat subtle in appearance, I created a fair size chamfer at the leading edges rather than have a square edge. This has successfully accomplished the effect I intended. The platform sides are pegged to the cabinet and right hand drawer case with one alignment dowel and subsequently glued to the left side and right drawer case. The back is open however, and the back panel can be seen in the opening.

I attached the left drawer case to the platform sides with 3 vertical lengths of dowels on either side, this adds considerable strength to the left drawer case. In doing so, I have left myself the option for the hidden compartment panel I might or might not install later on. In the photo, you can see the chamfered platform sides. Next, I begin to plan the actual drawers, something I've been longing to begin.

Wednesday, May 14, 2008

Laying out the drawer cases (1)...

I have had to take a short break from this project due to circumstances and other work in my schedule. I'm back on track with this cabinet now and I am in the process of laying out the configuration of the drawer cases. The original plan had one upper drawer at the top left and the two drawer assembly at the lower right. Upon reflection, I decided to configure the drawer cases differently as in the photo. This is somewhat of a staggered, stepped arrangement with the appearance of a floating drawer at the left with the original location of the two drawer case at the right. Since I have complete freedom to lay out the drawer cases as long as there is sufficient room above either of the drawer cases for art objects, I have taken this liberty in the design process.

At the left, beneath the single drawer case, I am also considering a false front which would appear as a solid piece of wood and is only removable through a hidden slot. This feature can be considered a secret compartment. I like the idea, but I also like the design of having the left drawer case appear to be floating as in the photo. I have mocked up the drawer cases with the empty compartment at the bottom left.

This is my current design dilemma and I will continue to experiment with the layout of the drawer cases.

Sunday, April 27, 2008

Preparing the drawer cases (5)...

I left off with the individual boards which comprise the two drawer cases. I moved on, trimmed the boards and created the joinery for the sides and top and bottom. The joinery will consist of a rabbet with some small reinforcement. I need to accurately trim the sides of the dual drawer case since there is an allowance for the middle drawer divider which needs to be taken into consideration. The accuracy revolves around the fact that I want each of the three drawers to be of the same general height.The dado for this particular divider will also be stopped, end just short of the front of the drawer case. This allows me to have the upper drawer have a lower lip to meet with the bottom drawer, hiding the center divider in the process.

In the photo, the drawer cases, not yet complete are placed sided by side and amazingly enough, there is hardly a gap between them. This allows me some flexibility in placement of the drawer cases, which has not quite been finalized yet.