Archive for the Category ◊ Tools and Shop ◊

Author:
• Tuesday, July 17th, 2012

It’s time . . . for the table saw-bandsaw matchup for building a table. Most of this applies to other post-and-rail or leg-and-apron construction such as cabinets-on-stand, beds, benches, and frame-and-panel casework. I’m afraid this is going to be a brutal mismatch, but don’t worry, the referee is nearby.

The bandsaw has decisive advantages over the table saw for making the legs. First, it allows for the artful selection of long-grain figure unrestricted by its original orientation to the edge of the board.

Equally important is the orientation of the end grain. As discussed in an earlier post, this is critical for shaped legs. In most cases, diagonally oriented annual rings in the leg blanks give the best look. Even if suitable riftsawn stock is unavailable, the effect can be created from thick flatsawn stock by ripping it at appropriate angles, as shown in the photo below. The 12/4 mahogany can be ripped as indicated by the squares drawn on its endgrain to yield the same desirable ring orientation of the maple leg blanks. (The markings on the maple are not cut lines.)

Of course, the ability of the bandsaw to cut curves allows infinite options beyond simple straight tapers. However, straight cuts in the thick stock usually used for legs are also more comfortably done with the bandsaw, used in conjunction with a jointer (hand or machine). Ripping 10/4 bubinga with even a 3HP cabinet saw is not fun.

Now just in case the faint of heart are wincing at this lopsided bout, I point out again that it is best to have a bandsaw and a table saw. As discussed in the previous posts, this match-up is really about the priorities that guide one’s approach to woodworking.

Moving on to the aprons and top, figure selection and options for resawing are again important. You might consider a bookmatched solid wood top for small tables. Curves in the rail members are also more likely to come from bandsaw thinking. Interesting designs can be created with thick veneer which can readily be produced with the bandsaw. The photo below shows 11″ wide ribbon-stripe khaya directly from my bandsaw. The pieces to the left will finish to 3/16″ thick after minimal planing, suitable for false drawer fronts, and the pieces to the right will finish to 3/32″, suitable for thick veneer. 

For mortise and tenon joinery, the heart of leg and apron construction, both the table saw and the bandsaw can make good tenon cheeks, though the table saw can also easily cut clean shoulders. Otherwise, there are few straight, clean, critical crosscuts required in building most tables, thus neutralizing one of the table saw’s strengths.

Don’t forget that in the design stage, as you unleash your creativity, the bandsaw makes mock-ups wonderfully fast and fun.

The referee steps in to stop the carnage and declare a TKO. (And, thankfully, also puts a stop to this ridiculous metaphor.)

Some woodworkers may be concerned that the bandsaw takes more setup, learning, and tuning. I do not think it is harder to set up a new bandsaw than a new table saw. Learning the bandsaw is mostly fun, with less intimidation than posed by the table saw. Further, there are many excellent sources of information, including books by Mark Duginske, Lonnie Bird, and Roland Johnson. I admit, however, that changing and cleaning bandsaw blades are among the least pleasant jobs in the shop.

I suggest get a steel frame bandsaw with at least 12″ of resaw height with motor power to match. Fortunately, bandsaws do not take up much space. Minimax and Agazanni are among the makers of excellent machines, and Grizzly and Rikon make very good, less expensive ones. If you have any money left over, consider buying a table saw; I hear they’re quite handy.

Finally, consider the wisdom of the late James Krenov, who wrote in The Fine Art of Cabinetmaking, “Of all my machines, the band saw has done the most to help me use wood the way I really want to.”

Author:
• Sunday, July 08th, 2012

Here – we – GO!

Let’s look at building a wall cabinet with two frame-and-panel doors. The style can be Krenovian, Arts and Crafts, Shaker, whatever you like. The same principles can be applied to other casework such as boxes and chests. I will make the somewhat artificial distinction between a table saw-centric and a bandsaw-centric craftsman. As discussed in the previous post, this is not a question of using one machine to the exclusion of the other, rather it is about which tool tends to guide your approach. Furthermore, this does not imply that one machine defines a craftsman’s entire methodology; obviously there are other tools in the shop.

Wood is selected, and the project starts with the case top, bottom, and sides. The table saw woodworker is likely to accept one of the sawmill’s edges of each board as starting points. After flattening a face and thicknessing, that edge is jointed and the opposite edge is ripped parallel.

The bandsaw guy is likely to start with more design freedom and not assume that the case will have straight edges, but even for a customary case with rectangular components, he has more opportunity to sensitively make the most of the wood. One of the most common pitfalls early in a project is automatically accepting the board’s edges that were sawn at the mill. The bandsaw guy studies the board and extracts the best parts, unfettered by the original orientation of the figure.

Resawing, the bandsaw’s forte, gives the freedom to seek out and use excellent wood in any thickness. For example, matched sides could be created from a figured billet.

Well fans, it looks like the bandsaw is doing moves the table saw has never seen. Ouch.

Wait, you say, isn’t it more accurate to rip the opposite edge parallel on the table saw? Yes, and if the table saw is available, use it. However, the advantage is small, especially with a well-tuned bandsaw. Furthermore, in both cases, the most accurate and well-surfaced final rendition of fitted edges will come from a handplane.

What about crosscutting? Again, the table saw has an advantage but it is only a little more trouble, and it is more controlled, to shoot the ends by hand which can be done after they come off the bandsaw.

The bandsaw is an MMA fighter and the table saw is a classic boxer.

Let’s consider making the doors. This is where the fight goes to the ground. With the bandsaw you can easily resaw a beautiful boardto make bookmatched panels that will be the best feature of the piece. Yes, you can resaw with the table saw but it is awkward and limited. Resawing is a gateway technique that can change how you think about wood.

Ha, you say, making the door rails and stiles has got to be where the table saw has the advantage. Yes and no. Once again, the all-important management of the wood is best done on the bandsaw. The figure in the wood used for the frame should be harmonious. Some craftsmen even like to resaw and bookmatch these pieces. The inside edges of the frame members will come off the jointer (hand or machine), and it is handy to then rip them on the table saw. However, for fine work, the width of these pieces will be cut a bit oversize and the final fitting of the doors to the case is best produced with a hand plane. A bandsawn edge is an adequate starting point for that.

Creative, interesting handles for the doors are more likely to come from a shop with a bandsaw.

And so the table saw taps out.

The main points are that the bandsaw facilitates more creativity in design, and far more artful use of wood. Though the table saw does have advantages in ripping and crosscutting accuracy, these are easily circumvented by using the bandsaw in conjunction with hand tools in an incremental, controlled approach to fitting the parts of a project. In short, a bandsaw-centric approach can produce better craftsmanship.

Next: The Rematch. Let’s look at how this applies to making a table. Now this could get ugly.

Author:
• Wednesday, July 04th, 2012

I have had many conversations over the years with woodworkers who were building or upgrading their shops and facing the question of where to place the higher priority, on the table saw or the bandsaw. Sure, with enough money and shop space, as well as time to set up, learn, and fuss with these tools, the most versatility is gained by having both machines. However, since we all deal with practical limitations, and shops are usually built incrementally, it is worthwhile to compare their merits. You might be able to buy only one of these two machines, or there might be a long wait before buying the second. If you are buying both, you might be wondering which one warrants a bigger share of your money.

More fundamentally, we tend to think through the building process, and even the design options, with our tools in mind. We steer our work toward the tools with which we are most comfortable – our “go-to” tools and skills. So this discussion is more significantly about which of these two machines do you mentally reach for first.

Let the sawdust fly.

The table saw excels at accurate ripping parallel to an existing straight edge. It can also very accurately crosscut at a chosen angle, usually 90º, to a straightedge. Some joinery can be accomplished, such at making tenons, slip joints, and dovetail work. Grooves and dadoes can be cut with the addition of a dado set.

The bandsaw can also rip and crosscut, but the sawn surface is generally not as exquisitely accurate nor as clean as that produced by the table saw. Truing and smoothing, sometimes tedious, are required. Using the bandsaw may seem like more work and even feel crude compared to the table saw.

I suspect this imagery is what causes some woodworkers to view the bandsaw as the second-banana sawing machine in the shop. They may figure that it is nice to have for cutting curves, but since they mostly make Arts and Crafts and Shaker style furniture, it gets dropped down on the priority list.

As you might guess, I strongly disagree with this “table saw-centric” view. Further, to those woodworkers who are making a priority decision as discussed above, I contend that placing the bandsaw first will, in most cases, make you a better craftsman.

Too often with issues like this, there is the tendency to think of the tool’s functions in isolation. It is more useful to think through the design and building processes, and how the tool can change what you can accomplish. So instead of listing what each machine can do, salesman-style, let’s look at real project scenarios using these machines.

For the record, I own and happily use a Saw Stop 10″ cabinet saw and a Minimax 16″ bandsaw. This is not a question of one machine to the exclusion of the other but a matter of prioritizing which machine tends to guide your woodworking.

Next: Round 2, the real action starts. We’ll consider these projects: a wall cabinet with frame and panel doors, and a table with straight-tapered or curved legs.

Author:
• Friday, June 29th, 2012

It is handy to have an arsenal to scrape contours and details. This is mostly clean-up work done after routing or planing.

The “gooseneck” scraper, above, handles a lot of concave contours. This Eberle model is about 0.028 inches thick. I do not know the Rc hardness but it seems softer than the Rc 48-52 of my other scrapers. Lee Valley has nice choices.

Cleaning up a cove, on a raised panel, for example, can be done by setting this scraper into the cove and then angling it to make the edge match the contour. To understand this, hold a coin in front of you and observe how the visible curve at the bottom changes as you turn the coin on the vertical axis. Angling the scraper also facilitates a smooth cut, though too great an angle will cause the edge to slice the wood and create tracks.

By the way, does that scraper look like a goose neck to you? To me it looks more like a whale or maybe a goose body without its legs and head.

The two little guys below are handy for all sorts of clean ups such as scraping glue out of a corner. They are 1″ x 2″, 0.020″ thick, Rc 48-52, and available from Lee Valley. Because their small size makes them hard to bend, you might want to file a slight camber in one or two of the edges to avoid gouging by the corners when doing work on an open surface.

The set of Flexcut scrapers, below, are earning their place in the shop. The scrapers are inserted into the handle and secured without screws or hassle. At 0.050″ thick, they are quite stiff. The handle can be held in various ways – like a pencil, in a fist-grip, or a fist-grip with the thumb behind the scraper. Both the ends and the long side edges are useful. I don’t use this tool frequently but its versatility sure is handy when the need arises.

Lynx makes a set of contour-edged scrapers that looks like a good option, but I have not tried them. 

Here are the Flexcuts tucked away in the little holder I made for them.

Sharpening these small and curved scrapers can be awkward. The small scrapers do not necessarily need a burr but I find they work better with it. The short carbide burnisher, available from Lee Valley, is convenient for preparing these scrapers.

Once again, my purpose here is to present a range of options and discuss what has worked for me, with the hope that this will help you sort out what is useful in your shop where you are the supreme commander, king, lord, and unquestioned deity, unless of course, your spouse or pet happens by.

Category: Tools and Shop  | 2 Comments
Author:
• Tuesday, June 26th, 2012

The outward simplicity of the hand scraper belies the many options available for this wonderful tool. For a card scraper, several parameters influence its utility. These are: thickness, width, steel hardness, and, to a lesser degree, height. In this post, I will discuss the card scrapers that I find useful in my shop.

The 0.032-inch thick (usually listed as 0.80mm) scraper is the one most commonly referred to in discussion, instructional materials, and in catalogs, but is the one I use least. This is a thick scraper suited, in my view, primarily for heavy use on bare wood or for removing finishes. I have Bahco and Lee Valley versions, both Rc 48-52, 6″ wide, and 2 3/8 – 2 1/2″ high. One of them is filed to a slightly concave edge along its length for use in creating subtle convexity on the surfaces of legs.

For general use, this relatively stiff scraper does not afford the sensitivity of the thinner models. For my work, hand scraping is usually done near the end of the surfacing sequence when a delicate touch is desirable.

The 0.024-inch thick (0.60mm) scrapers are the most used in my shop. They are from Lee Valley. I like the 6″ width which makes it easy to camber sensitively for long work sessions. The same thickness available from Bahco is only 5″ wide which reduces some of that sensitivity, and just seems too narrow for my hands. I wish Lee Valley would make them taller than 2″. I own two and always sharpen them at the same time, giving eight edges ready to work. They are Rc 48-52 as are all of Lee Valley’s card scrapers. By the way, Lee Valley’s scrapers come with the edges ready for burnishing.

For especially delicate work, including touch-ups and error correction, Lie-Nielsen’s 0.020-inch thick (0.50mm), 6-inch wide, 2 1/2-inches high, Rc 49-51, is just right. It bends easily, allowing light shavings in a small area. This flexibility, however, makes it hard to avoid unevenness in larger areas of work. Lie-Nielsen also makes a 0.032″ model.

I also keep an 0.020-inch thick Bracht scraper as stock to cut and shape for special applications. Thin and soft at Rc 38-42, it is easy to cut and modify for dedicated use in a project.

In the photo below, from left to right, are 0.024″, 0.032″, and 0.020″ scrapers. The holder is a hunk of 2×4 with some slots bandsawn at an angle.

In summary, my go-to scraper is 0.024″ thick, but the other options are still very useful. Most important, I want to call attention to the available options and encourage readers to try them and find what works best for them. These are just my preferences. Scrapers are inexpensive tools so I suggest get a bunch. Having one scraper is like owning one pair of socks.

Next: more sizes and shapes.

Category: Tools and Shop  | 3 Comments
Author:
• Wednesday, April 04th, 2012

This installment of the Q&A features questions from readers about shop electrical supply, convex-sole planes, gel varnishes, ripping, and Claro walnut.

A woodworker who is planning a new small shop is considering how much and what type of juice to have the electrician wire into it. Here’s what I use in my little playpen and why.

The pre-existing wimpy household 110V-15A wiring takes care of shop lighting and a few other small items such as a battery charger. Then there is a 220V-20A line with a single receptacle. This runs the bandsaw, table saw, and jointer-planer; one machine at a time, of course, because there’s only one guy in the shop. A 220V-15A line would not reliably handle a surge from the jointer-planer rated at 14A or the cabinet saw at 13A. There are also two 110V-20A lines, each with a pair of receptacles. Two lines are necessary to run the DW735 at 15A along with the dust collector at 16A. This also accommodates any portable power tool that I own along with the Fein shop vac.

It pays to plan carefully for the shop you have now and for the shop you aspire to. I think I’ll never need more juice than this in my one-man small shop.

A woodworker planning to make a coopered door inquires about options in planes with the sole and blade convex across their widths. The radius of the blade needs to be just a bit smaller than the curve it planes. Calculating an example, a 14″ wide door with a curve depth of 2″ has a radius of 13.25″. A 1-1/2″ wide plane blade of this radius will have a curve depth of 0.02″. Taking into account the effect of the blade bedded at 45 degrees (formula here), the blade must be cambered .03″, or about 1/32″. A tiny bit more depth than that will keep the outer corners of the blade clear of the wood and enhance control.

For this, my solution is to take any small wooden plane and camber the blade, and shape the sole to match it. Test and adjust. One nice option might be to get a Krenov style plane kit from Ron Hock and alter it accordingly. A Japanese convex sole plane is a more expensive option that is not tailored to the specific task, and is likely to be too curved for it.

I was a fan of Bartley’s gel varnish, which is no longer available as far as I know. A few questions came in regarding alternatives. Here are three:

A reader asked about my preferences in handsaws for long rips. My preference is the bandsaw, the “hand tool with a motor.” In most cases, I see no particular virtue in sweating out a long rip by hand, but the Disston D-7 is my weapon of choice if I really want to commune with the wood.

Speaking of communing with wood, I’ll hang out with Claro walnut any day. A reader wonders what woods might make a good combination with Claro. Of course, this is personal preference, but consider pear. The pink blush of pear seems to bring out the red hues in Claro, and its fine, delicate texture contrasts with the moderately open-grain nature of Claro. Unity and variety, right Mr Heath?

One combination that might seem promising but falls flat to my eye, is walnut and cherry. Maple and walnut usually don’t seem to work together. Claro and zebrawood look cool together, and ash also has potential with Claro. Just opinions.

Email questions (see the About page) and I’ll try to answer as time permits. Thanks, and happy woodworking.

Category: Tools and Shop  | 2 Comments
Author:
• Tuesday, March 20th, 2012

Here are the other rasps that have been useful in my work. There are, of course, many more specialty rasps available than discussed here. Hopefully, you will have the opportunity to use high quality rasps that are suited for your work.

For the enjoyable work of shaping table legs, the Auriou curved “ironing” rasps have been very helpful. Pictured are the larger #8 grain, 1-1/8″ wide, and the #10 grain, 3/4″ wide. (I do not see the #8 grain available now, but there is a #9.) This type of rasp has a shallow curve along its length, useful for the gradual concave curves found in legs and other work. These smooth-cutting tools give excellent feedback to the hand when fairing curves.

Half-round rasps can be used to fair these curves but there are some disadvantages. As the convex face of the rasp is angled to the length of the leg, the contact profile is asymmetrical and often becomes confusing to feel. Also, there is less contact length, somewhat like a short-soled plane, and this makes it harder to feel the lumps and bumps that must be removed to fair the curve. There is also more tendency to tear the wood fibers. Do not be tempted to hold the rasp almost parallel perpendicular to the length of the leg because the teeth will slice the wood like tiny knives, you will not be able to control the rasp well, and deep scratches will be created; not how a rasp should cut.

Now, let’s say you’re at the bandsaw and both your mind and the cut wander, hopefully on the safe side of the line, and you end up with a lump on your otherwise nice leg. Hack it down with this beast, the Surform shaver. Don’t expect a lot of control or a uniform surface, but it is cheap and works quickly.

Click the thumbnail below to enlarge.

Returning to refined tools, for detail work, the Auriou #14 grain modeler’s rasp can be a lifesaver. It is thin and can be exquisitely controlled. It leaves only a very shallow scratch pattern, but can be made to remove wood remarkably fast for its size and grain.

Similarly useful, though a bit less smooth-working, is the Grobet detail file. While not a true rasp, its double-cut file pattern makes it function similar to a rasp. It is also versatile – four faces, flat and convex, each in coarse and fine.

Click the thumbnail below to enlarge.

The larger round rasp is an inexpensive model from Lee ValleyThe round needle rasp, made by Corradi, is helpful for various detail work such as enlarging holes. The handle, also from Corradi, has a chuck which allows the rasp to be removed.

Click the thumbnail below to enlarge.

This wraps up the rasp series. I hope it has been helpful. A final thought: it is easy to underestimate the value of a quality rasp. They are not pretty tools, but they can make a big difference in your work.

Author:
• Monday, February 27th, 2012

In the two previous posts, note the orange-colored handles on the Nicholson, Corradi, and Iwasaki tools. These are labeled “Disston” but, as far as I can tell, are no longer manufactured. I last bought some at least several years ago, I’ve forgotten from where, and have about eight in use and a few spares. Disston called them “Stronghold” handles as seen in this ad from 1930. They came in five sizes, from #1, the smallest, through #4, and the long, thin #0 for use with taper files for saw sharpening. The #3 is good for a 10″ rasp or file.

There are three relief slits at the front of the handle which is surrounded by a steel spring ferrule. This construction grips the tang of the rasp well, prevents extension of the built-in slits, and makes the handle reusable because there is some flexibility to the bore. Best of all, these handles feel just right in my hand.

I wonder if one of the hand tool manufacturers such as Lie-Nielsen or Lee Valley would be interested in making these handles if patent issues could be cleared. By the way, I do not have the Disston handles on my Auriou rasps only because I am unable to remove the less comfortable original handles despite lots of pounding.

Rasps are used more effectively if one adopts the attitude that this truly is a tool to be used with sensitivity. The rear hand (on the handle) supplies power and direction while the forward hand aids control with a light hold. Push to cut, disengage with a slight lift, retract, and repeat. The rasp is angled to the direction of push (remember the teeth are in diagonal rows), but avoid a pronounced sideways motion which will make the teeth slice into the wood across their width, causing the tool to grab and create deep scratches in the wood.

Adjust your push and pressure to the grade of the selected rasp which is based on the stage of the shaping process. Flip freely from the flat side of the rasp to the convex side depending on the contour of the work. As you get closer to finishing, lighten your touch. Use the weight and stiffness of the tool to sense lump and bump irregularities as you fair the curves of the wood. As with all woodworking, good adjustable lighting helps a lot.

For purchasing 10″ half-round rasps for fine furniture making, the subject of these posts, here are some suggestions. You can try out tools prior to making your choices at shows, some stores, Lie-Nielsen Hand Tool Events, woodworking schools, or your friends’ shops.

  • Low budget: Shinto + one medium lower cost hand-cut or maybe a Nicholson
  • Middle ground: Shinto + one hand-cut such as an Auriou #9 or #11
  • Better still: Shinto + #9 Auriou + #13 Auriou, and use a medium/coarse lower cost rasp that you may have acquired earlier for rougher or less critical work
Next: more rasps