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• Thursday, November 03rd, 2011

This is the best shooting board I have ever used. I believe it is probably the best available anywhere. Tico Vogt made it and he can make one for you – the Super Chute 2.0. A shooting board is an extremely useful, almost magical, tool that can greatly elevate your control of woodworking processes. After watching Tico develop and improve his version of this tool, I finally had a chance to use it last week at a Lie-Nielsen Hand Tool Event at the Connecticut Valley School of Woodworking.

That’s Tico in the photos using his Super Chute 2.0.

It was like slicing baloney with a sled on an ice track. Tico showed me the tool’s incredible quality details and nuances that only could come from a seasoned woodworker who knows from experience what really works in the shop. To elaborate on all of them here would make this post too long, but I will point out a few highlights.

The plane rides on a track of super-slick UHMW plastic. Importantly, the work piece sits on an angled bed which facilitates a strong stroke with the plane and distributes wear and cutting resistance over a greater width of the blade than a flat bed would. The 90̊ and instantly-installed 45̊ fences register in eccentric bushings which make their angles micro adjustable. The fences are also laterally adjustable to completely eliminate end grain spelching. To my mind, these user-controlled features respect the skill and intelligence of the craftsman using the tool. A donkey ear miter attachment that installs easily is also available.

Tico uses CNC technology and sources components manufactured with a high degree of sophistication to a produce a product with quality evident throughout. No, it’s not cheap; excellence never is. This is Lie-Nielsen-type quality in a shooting board.

A plane such as L-N’s sweet #9 makes shooting all the more of a pleasure but don’t feel you must have a dedicated miter plane to start shooting. A well-tuned and well-sharpened jack plane, bevel-up or bevel-down, can shoot very effectively. Shooting is a gateway technique, easily learned, that will allow you to produce precise ends on components of casework. It is a must for making precision high-end drawers with hand tools.

This review is unsolicited and uncompensated. I just think the Super Chute 2.0 is a heckuva tool.

Author:
• Tuesday, October 25th, 2011

Using a straightedge is easy, right? Yes, but it does pay to use a technique that is both practical and consistent with the tolerance to which want to work.

Pictured above are, from front to back, a 6″ Bridge City rule, the 18″ beveled Starrett #385, the 24″ unbeveled Starrett #380, and a Lee Valley 50″ aluminum straightedge. The photo below shows the thicknesses, from left to right, of the 6″ rule, a Starrett combination square blade, the #385, and the #380. The Lee Valley is about 7/16″ thick at its base. 

Let’s look at three techniques for using a straightedge and consider some of the related features of different straightedges.

1. Eyes won’t lie

This is the way a straightedge is usually thought to be used. You simply hold the tool against the surface and look for gaps against a light. Done properly, this allows the eye to easily detect gaps of 0.0005″ (half a thou) or less.

It is helpful to use a diffuse, linear background light, such as a fluorescent bulb, and a thin edge against the work, such as a beveled edge. If a wider edge is used, ensure that your line of sight is parallel to the surface. A false impression of accuracy will result if the light under a gap is blocked from view simply because there is an angle between your line of sight and the width of the tool’s edge.

This technique can be awkward and tiring because you have to hold the tool and the work up to the light, or bend and maneuver to view a stationary surface. It is good for testing a plane sole or other small, very precise work. The #385 or an accurate small rule are good choices. Avoid tipping the straightedge which can introduce errors caused by any slight bow of the tool along the length of its face.

2. Shim it, shim it again

Here you lay the straightedge on the surface and use feeler gauges to seek out gaps. Look for hollows near the middle of the tool, but also press down near an end to check for gaps at the opposite end created by a bump somewhere in the middle.

A good way to work to a specific tolerance, say 0.001″ for a plane sole that you are lapping, is to put a leaf gauge under a wide-edged straightedge, and then gently pull the leaf to see if it drags the straightedge or slips through freely. The former indicates you are within tolerance (as long as there was no previous rocking of the straightedge), the later indicates a gap. Decide how large and where you can tolerate errors.

This technique is also handy to test a tablesaw top or jointer bed which you cannot lift and where bending is difficult or impossible to get your line of sight parallel to the surface.

The #380, or any tool with a similar wide edge, is a good choice for this technique.

3. Swing it easy

The first two techniques are slow and almost always overkill for wood preparation. So here’s the quick, easy, practical method that I suggest for dressing stock.

Set the straightedge on the wood, grasp and unweight one end, but do not lift it, and gently swing it along the surface. See where the tool “grips” or pivots. If it pivots just barely at the opposite end, the surface is slightly concave. If it pivots somewhere in the middle, you’ve got a bump. In woodworking, bumps are generally undesirable so you work with a one-sided tolerance, flat or a trace concave. You’ll quickly get the feel of this method.

Here is where a heavy, wide-edged, metal straightedge gives you a nice feel on the wood. The steel Starretts or the big Lee Valley aluminum work well.

This is convenient – no lifting or unclamping the work – and it quickly tells you what you want to know – that one-sided tolerance. It allows you to work in rhythm with your craftsman’s intuition.

In conclusion, the straightedge, while the simplest of tools, requires matching the technique to the task.

Category: Techniques, Tools and Shop  | Comments off
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• Thursday, October 20th, 2011

It can be argued that a straightedge is unnecessary. When using a handplane, for example, a woodworker can sense the flatness of a board from the bite of the blade and the shavings produced as the work progresses. As another example, the ultimate test of an edge-to-edge glue joint is how the boards meet each other rather than an external standard. You would, however, mostly have to just trust that your planes’ soles, tablesaw top, jointer beds, and so forth are accurately flat.

As a practical matter, a high quality straightedge is a fundamental reference tool that is very useful in the shop and is easy to acquire. I prefer factory-made metal straightedges, but wooden straightedges can be made in the shop to a very high standard. 

Here’s a simple method:

Start with two pieces of a stable, fine-textured wood such as mahogany or cherry, quartersawn, flat, with straight grain, about 2″ wide, 18″ – 30″ long, and 3/8″ – 1/2″ thick. MDF will also do. Join the two pieces face to face by clamping, or by pinning with nails or dowels that are snug but removable. Bevel a pair of adjacent edges to make each 3/32″ – 1/8″ wide.

Now plane both the thick and the thin pairs of edges as flat as you can. I think the easiest way to accurately plane the edges is to shoot them. Put the plane on its side, clamp the pair of sticks on a flat board with a pair of edges overhanging, and plane away. Uncouple the pieces and check the edges against each other.

You can start off by simply ripping each piece on an accurately set up table saw and then go to the planing steps.

Because two edges are being planed together, they will have the same type of inaccuracy – concave or convex – at the same places. The inaccuracy will be effectively doubled when you place the edges against each other and compare them against a lighted background. [There is no realistic possibility of creating a falsely acceptable result by producing one concave edge which happens to mate with the other edge being symmetrically convex.] Work until you achieve whatever level of accuracy that you think is practical for your work.

You now have made two straightedges AND a pair of winding sticks!

I made the 30″ winding sticks, pictured above, from 3/4″ MDF. Only minimal planing was required to refine tablesawn edges. They’re good to about 0.001″ over their lengths. I use them only as winding sticks, which is another topic for another time.

For straightedges, I like steel and, in some cases, aluminum. A quality metal straightedge, such as a Starrett, is accurate to an extremely high tolerance and has the advantage of durability. I like the weight, contact feel, and affordability of a steel straightedge in lengths up to 24″. For longer ones, aluminum keeps the weight and cost down. Properly cared for, these tools will last a lifetime.

Next: a selection of straightedges and techniques for using them.

Category: Tools and Shop  | 4 Comments
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• Thursday, October 06th, 2011

First and foremost, a woodworker needs to know wood. No degree of prowess with tools and techniques can compensate for a lack of understanding of the material into which steel cuts. The guys at American Woodworker magazine have put together a sawdust-in-your-pockets practical collection of topics that I think would benefit any woodworker: Getting the Most From Your Wood-Buying Bucks, published last year. My recommendation is unsolicited and uncompensated; I just want to share good information.

The sections of the book are:

  • Finding Great Wood. This includes getting wood from locally cut trees, using salvaged wood, dealing with wood defects, and understanding lumber grading.
  • Sawing & Milling Great Wood. Topics include flitch-cut logs, resawing, milling rough boards, and the best explanation of reading grain direction that I’ve ever read.
  • Drying Your Own Wood. Even though you might not use the plans to build your own kiln, the explanations of drying wood and moisture meters are very helpful.
  • Very Special Wood. My favorite section. Five different authors share their intimate knowledge of eight different wood types and species, such as spalted wood and mahogany and its look-alikes.
  • Special Finishes. This is a sampling of finishing strategies and principles for woods including pine, walnut, cherry, and oak.
  • Projects for Special Wood. Here are some interesting furniture projects and techniques for managing large slabs.

Even in areas where I think I have a good amount of knowledge and experience, I was able to pick up useful tips and helpful clarifications. Typical of Fox Chapel books, the layout and photography are attractive and inviting.

What I do not like about this book is the title. The book does give information for you to achieve that goal but, as a title, it underestimates the scope and value of the contents. One of the reasons I wanted to write this review was my concern that the book might be overlooked because of its title.

I’ve tried to open the cover for you in this review, but I think if you take a look for yourself, you’ll like it. Its practical approach makes it a good addition to books I’ve previously recommendedUnderstanding Wood, by Bruce Hoadley, and the encyclopedic volumes, Wood, by Terry Porter, and Wood Handbook, from the US Forest Products Laboratory.

Don’t you just love wood?

Category: Resources  | 2 Comments
Author:
• Wednesday, September 28th, 2011

That title may make my spam-comment filter work overtime. Anyway, this post continues the discussion of managing figure in wood. Let’s look at the orientation of the annual rings in the rectangular blanks from which curved legs will be cut. Short sections of Douglas fir will be used to illustrate the principles.

All of this refers to legs which curve in three dimensions (planes). The curves may be cut on all four faces (e.g., a cabriole leg) or just two adjacent faces. Legs in which the curves are cut only on two opposite faces are curved in only two dimensions (picture the leg sandwiched between two flat sheets of plywood) and are a somewhat different matter. Bent lamination legs are an entirely different matter. Please do not ask me about legs which alter the time-space continuum.

The photo above shows the three possible basic orientations. The dot on the end grain indicates the inside corner of the legs. The two faces adjacent to this corner usually each have a flat portion where the aprons are attached with mortise and tenon joints.

In the three legs, from left to right, consider the endgrain patterns:

  • The annual rings are approximately parallel to one face and perpendicular to the other, producing one flatsawn face and one quartered face.
  • The annual rings are approximately 45° to all four faces and run “across” the inside corner.
  • The annual rings are approximately 45° to all four faces but run parallel to an axis from the inside corner to the outside corner.

For simplicity, I cut the curves into two adjacent faces. The effects would be the same if curves were cut into all four faces such as in a cabriole leg.

Let’s look at the results.

The leg on the left is bad news. The irregular figure produced by cutting a curve into the flatsawn face is unpleasant in itself, and the inconsistent figure among the faces distracts from the shape of the leg.

The middle leg is an improvement but, to my eye, the figure lines fight the curves of the legs. There is too much run-on and run-out of the annual ring lines.

I like the leg on the right. By cutting the blank from approximately 45̊ riftsawn stock and orienting the growth rings in this way relative to the inside corner, a good lookin’ leg arises. The shape of the leg (though uninteresting in this example) coordinates with the figure.

Here are closer views: 

Note that another disadvantage of the leg on the left is the exaggerated consequence of a small knot intersecting the cut line. Small pin knots, such as are common in cherry, can be difficult to avoid, but the middle leg demonstrates that they will have much less consequence with that grain orientation.

It is hard to find a thick, purely riftsawn board from which to make leg blanks, but most fairly wide flatsawn boards contain some effectively riftsawn stock toward the sides. I examine the end grain and face grain and carefully select the best sections of such boards. I pay attention to the straightness of the figure along the length of the board, recutting the edge to “straighten” the figure lines if necessary. I also try to somewhat coordinate bends in the figure with bends in the leg design.

Of course, you can choose however you like to use figure, but the key is to be aware of it and manage it. Making your design and the beauty of the wood work together, each enhancing the other, can bring class, beauty, and quality to your woodworking projects.

Happy woodworking to you.

Category: Techniques  | Tags:  | 2 Comments
Author:
• Tuesday, September 27th, 2011

Wood has figure that was created from life, which, in turn, helps bring life to a creation in wood. Throughout designing a piece, choosing wood, and building, I want to make the most of what the wood has to offer so a synergy develops between the design and the wood. This is not aluminum, Corian, or clay upon which a design is imposed; this is wood!

When cutting curves in wood, it is helpful to predict how the figure will change. The figure should work with, not fight, the contours of the piece. The interpretation of that task is subjective but it pays to be aware of and work skillfully with the figure. (Bent lamination, by the way, is a different matter.)

Here is a visual guide to some of the issues that arise in curved work. I used home center Douglas fir which has obvious figure lines created by the large difference between the earlywood and latewood. This is for purpose of illustration, it is not meant to be pretty.

In the photo above and the next two below, a concave curve (marked on the top surface) cut into the rift face causes the figure to bend. The end grain is emphasized with pen lines to show that the annual ring lines go downward as you go deeper into the wood. Thus, the concave curve creates a smiley bend from the straight face. A convex curve would do the opposite. 

Below is the result if we started with the block with the opposite face on top. (I just turned the same block upside down.)

Now let’s cut a similar curve into a nearly-flat-sawn face. The end grain lines meet the face at an extreme angle and so the figure changes rapidly as we cut the depth of the curve. The result is, to my eye, unattractive. Some of the figure lines run off the resultant face at the bottom and jump on at the top.

Now let’s cut the curve into the quartered face. Since the annual ring lines meet the face at about 90̊, there is almost no shift in the direction of the figure after the curve is cut. 

Of course, many other variables come into play, including the depth and consistency of the curves, and their placement in the piece. None of this would matter much in basswood which is nearly absent in figure.

The main ideas:

  • appreciate that the figure changes as curves are cut into wood
  • it is helpful to be able to generally predict how the figure will change
  • use this to the best advantage of the wood and the piece you are making.

Next, we’ll look at how this applies to curved legs. The appreciation of figure and legs, now there’s a worthwhile topic.

Category: Techniques  | Tags:  | Comments off
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• Thursday, September 22nd, 2011

1. Be a control freak

Once a machine woodworking procedure starts, any unexpected event will occur suddenly, probably too quickly for you to react. At that point, your defense is whatever margins of safety, such as guards and hand clearances, that have been built into the setup and come into play after the mishap. You have to hope they are adequate to prevent injury.

The safest way to use a woodworking machine is to know, before starting, exactly what is about to happen. It should be a completely predictable operation. We know the machine itself will operate in a fully predictable manner (the blade or bit spins), and so your job is to thoroughly understand and control the interactions among you, the wood, and the machine. You must understand all the forces at work. In short, don’t hit the start switch if your mind harbors doubts!

Of course, still use the guards and clearances.

2. Cut or throw?

A machine blade or cutter, given the opportunity, will always throw the wood rather than cut it. You must deny the machine that opportunity by restricting the movement of the wood, and ensure that it has the capacity to cut the wood. Using hand-held power tools, it may be the tool itself, with your hands still holding it, that gets kicked.

All of the following mishaps, among many more, are essentially a cutter throwing the work piece because the operator gave the machine an alternative to cutting it:

  • Table saw kickback – the absence of a splitter/riving knife allows the kerf to pinch the rising blade which grips and violently throws the wood.
  • Thickness planer kickback – a short board is freed from the infeed roller before reaching the outfeed roller so the blades grab and eject the unrestricted wood.
  • Drill press – the rim of a bit, such as a large diameter Forstner, snags an unclamped work piece and throws it, or worse, pulls in the hand that is trying to hold it. Re-entering a hole with a spinning bit increases the chance of this disaster.
  • Bandsaw – wood held above the table surface is presented to a coarse tooth blade and gets slammed to the table, drawing the worker’s hands with it, possibly into the blade.
  • Router table – uncontrolled climb cutting (feeding the work piece in the direction of the cutting edge rotation) zooms the wood across the table, possibly carrying the woodworker’s hands into the cutter.

Well, I’m getting uneasy just writing these scenarios. Of course, these two concepts are just part of safe practice, and there are many more ways to get hurt with machines. However, keeping these two basic principles in mind – and in action – will go a long way toward using machines safely.

Stay safe in the shop!

Category: Techniques  | 3 Comments
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• Tuesday, September 13th, 2011

When I want an absolutely reliable reference measuring tool, I reach for a Starrett. It’s that simple.

We’ve all had our frustrations with tools that seemed promising when new but proved to be deficient in design or construction and thus do not perform. I particularly avoid tools that are unnecessarily complicated or are merely solutions chasing a problem. Worst of all are tools that are made just to be pretty. On the other hand, don’t get me wrong, there are some great small-scale toolmakers out there making high quality, useful, and often innovative products.

Reliable primary references for straight and square are necessities in the shop – specifically, a straightedge at least 24″ long and a combination square (a large machinist square is a more expensive and less versatile alternative). Don’t skimp on quality for these; they are lifetime tools. Get Starretts and be done with it. (A flat reference, such as a granite surface plate, though not a must, is also helpful and can be had economically.) My Starrett tools include a 24″ straightedge, a combination square with a hardened head and 12″ and 18″ blades, a 6″ adjustable square, and several others that would be considered more optional than basic.

The integrity of most shop procedures and tools can be traced to verifications using these reference tools. Examples are a flat jointer table with a square fence, the soles of handplanes, a table saw crosscut jig, shop-made jigs, and so forth. Things such as these allow you to start a project on a reliable basis rather than dealing with fundamental inaccuracies that will be carried like an infection through the building process.

Top grade straight and square reference tools are like the Constitution of your shop and you’re the Supreme Court.

Starrett is a solid American company with a proud history, and is technologically current and innovative. They continue to manufacture most of their precision tools at their Athol, Massachusetts plant, working to unsurpassed tolerances. Every one of their measuring tools that I own or have seen has been exquisitely well finished. A Starrett is a mensch at the bench.