Archive for the Category ◊ Tools and Shop ◊

Author:
• Tuesday, January 28th, 2014

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The Veritas Shooting Sander uses the principle of shooting – a guided vertical cutter is pushed to engage a work piece that is stably oriented by a surface and a fence – but uses sandpaper instead of a plane blade as the cutter. It’s simple and useful.

Though it certainly is not intended to replace shooting with a plane and a good shooting board, I’ve been so far finding it handy for odd-shaped parts that cannot be fully backed by a conventional shooting board fence, and for small parts.

As we would expect from Veritas, the tool is well made and thought out. The accurately made anodized aluminum extrusion body and the nifty adjustable wooden handle are good reasons to forego a shop-made attempt at this low-cost tool.

The shooting board I made for it is straightforward but there are a few fine points. The base is 3/4″ MDF, 23″ long. The work surface is 7 3/4″ wide with a nice straight edge against which the sander runs. The track for the sander is 2 1/8″ wide with a 1″-wide outer guide rail.

The work surface must be elevated at least 9/32″ above the track surface for the sandpaper to meet the lowest part of the work piece. I made the work surface from two pieces of MDF (just what was handy) for a total thickness of 11/32″, which gives a little margin for error when applying the sandpaper to the tool. That is, the bottom edge of the work piece is sure to be within the width of the sandpaper, even if I don’t apply the PSA paper to the tool perfectly accurately.

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The fence is about 1 3/8″ high, screwed down 3 1/2″ from the end of the board with slightly oversized clearance holes that allow fine tuning for squareness.

Break in the shooting board just as you would for a plane shooting board by running the sander along the edge of the work surface so that a tiny width of sandpaper, say 1/16″, cuts a miniscule rabbet along the edge of the work surface. Then screw down the 1″-wide guide rail on the outside of the track so it is snug against the sander for the full length of the track.

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A generous amount of oil-varnish finish toughens the MDF surfaces. Finally, I waxed the track. It all works well.

1 1/4″ wide adhesive-backed sandpaper strips are used for this tool. These are most economically made by slicing 2 1/2″ Klingspor PSA abrasive roll paper down the middle of its width. The paper strips that Lee Valley supplies are Klingspor’s.

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After removing the first piece of sandpaper from the tool, I cleaned the residual adhesive off the tool with a citrus-based remover, but did not then clean off the slightly greasy residue of the remover. I found that subsequent sandpaper stuck plenty well enough and left hardly any residual adhesive when removed.

The tool is very easy to use but there are a few caveats. The sandpaper leaves grooves that are surprisingly deep for a given grit. That is simply because the tiny grits on the sandpaper are running in the same tracks over and over, unlike with regular hand sanding where the slight variations in movement erase most of the tiny grooves.

The work goes slower than shooting with a plane, especially since sandpaper seems to cut slowy on endgrain. Also, the thickness (height) of the work piece is limited to just under 1 1/4″.

The tool can be used ad lib to sand odd angles without using the fence by holding the work piece very firmly and offering its edge at the desired angle (such as indicated by a scribed line) to the sander running in the track.

All in all, this so far has been a worthwhile addition to the shop. My sense is that it will increasingly become a valuable quick “problem solver” tool that I’m very glad to have.

Category: Jigs and Fixtures, Tools and Shop  | Tags:  | Comments off
Author:
• Monday, December 23rd, 2013

First, the tips:

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The cutoffs from thick curved cuts on the bandsaw will probably prove useful, so think twice before trashing them. With a little cleaning up, they can become clamp blocks, sanding blocks, or supports under the work pieces for hand tool work.

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Camellia oil oxidizes very little but enough to make it somewhat gummy after a long time in a tool oiler or on the surface of infrequently used tools. Since adding a generous amount of vitamin E oil, an antioxidant, to my storage bottle of camellia oil, the problem has been all but eliminated.

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After just a few weeks, the magnetic-mount LED work light from Lee Valley has become a shop favorite. I always use it for bandsaw work where the powerful magnet keeps it stable while the 18″ flexible neck stays put. At the workbench, it is easily set up for joinery work by using the mounting plate with the 3/4″ post in a dog hole. It is also invaluable for creating a low raking light for surface finishing tasks.

[Addendum: Over time I have found this lamp to be unreliable. High quality batteries seem to drain unusually fast and leaked in the original lamp and again in a replacement lamp. I no longer recommend it.]

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I find this simple bandsaw push stick (above) handy and safe. The key is the hacked-up tip that grips a corner of the work piece. The tip is self-renewing as it gets passed into the moving blade (so my fingers won’t), until the stick gets too short, when it takes only a minute to make a new one.

Now, the irritations:

While A2 steel certainly has merits, it dulls differently than O-1, often with minute chip-outs, even with higher secondary bevel angles. I am also convinced that it must be very difficult to manufacture consistently with regard to carbide grain size, because I have some durable A-2 blades that almost never chip out and some that do so much more often, despite all being from highly regarded makers.

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Jorgensen’s otherwise excellent #37 series heavy-duty bar clamps come with soft orange pads that leave oily stains on the wood when tightened hard. (On sanded mahogany in the photo below.) The stains do seem to get obscured by oil or varnish finishes, but are a risk and annoyance better avoided. The manufacturer acknowledged the issue when I contacted them, but I have seen no changes in the product in the more than one year since. I replaced the OEM pads with Bessey pads on the screw end and thin adhesive cork on the fixed end.

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This one goes in the DAMHIKT file. I think I’d work outdoors in single digit temperatures rather than do topside routing of MDF in the shop, at least when a router dust collection attachment is impractical. It’s just not healthful.

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Another one: Non-tapered sliding dovetails longer than about 3 or 4 inches should be considered a major risk factor for insanity. This was a situation where a tapered sliding DT would not work, but some things are just not meant to be.

It’s all OK though, because making things continues.

Category: Tools and Shop  | Tags:  | 3 Comments
Author:
• Saturday, December 14th, 2013

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The 0.5 HB, despite limitations, is convenient and versatile to perform most layout work. However, as in most matters of woodworking, it is valuable to have a range of options to suit the tool to the task.

In the photo above, the line on the left was made with 0.5 HB, the next with a worn chisel point 2.0 mm 2H, and the three on the right with fresher chisel points.

What about the flat carpenter’s pencil? It won’t roll away while you are building on a roof but I do not like them for furniture making layout. The lead is too soft in the widely available regular ones, and though harder lead is available, I find them generally too coarse. A chisel point can be made with a knife, and renewed with sandpaper, but the process is slower and messier than the 2.0 mm and 0.9 mm 2H.

This is just personal preference and you may find you like them. Another option for sharpening the carpenter’s pencil is the clever Keson sharpener, which uses two blades in succession. Other sharpeners that bring the flat pencil to a rounded point are a good example of defeating a design with “improvements.”

Since only the timid and fools don’t make mistakes, those who use pencils must use erasers. The pink eraser on the end of a wooden pencil is adequate for spot use but it tends to smudge. The refillable white eraser on the end of the Pentel Twist-Erase is much better.

However, I like to make big, head-slapping mistakes so I keep two types of separate erasers available. A kneaded eraser is convenient in that it does not produce crumbs, and it lasts a long time, but often it cannot fully remove lines on wood. Its surface is refreshed by folding and kneading. More thorough is a white “plastic” eraser, such as the Staedtler Mars. It does produce crumbs but this serves to keep its surface clean and thus prevent smudges on the wood.

Finally, you might like this short video of great insight drawn from the humble pencil.

Category: Tools and Shop  | 2 Comments
Author:
• Saturday, December 14th, 2013

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Lines made with pencils are a ubiquitous and essential part of woodworking, so it pays to take a close look at pencils, points, and how they are used.

The basic hexagonal wood pencil with HB (#2) lead, such as the classic yellow Dixon Ticonderoga is a handy workhorse for general non-critical layout and labeling. I stay away from round pencils and the annoyingly flexible cheap ones made from composite material.

The point wears quickly on the ol’ #2, so consider using a 2H art/drafting pencil. The harder lead retains a point better so it draws a finer line for a longer time. I find that pencils harder than 2H tend to dent many woods, or make lines that are too light.

For dark woods, I prefer a white pencil, though some like red. Colored pencils are softer than regular ones so must be sharpened more frequently. The Sanford/Prismacolor Verithin #734 seems to be the most durable white pencil.

A battery-powered sharpener at the front of the drawer under my bench top is fast and handy for these wooden pencils.

For a more consistently fine line, a 0.5 mm mechanical pencil is useful. The ratcheting style allows the point to be easily advanced with one hand, a significant advantage when the other hand is holding a square in place. My favorite is the Pentel Twist-Erase. It has a bulky rubbery grip and a robust eraser that is not hidden by a cap and has plenty of spare length. (It is the black pencil at the top left in the opening photo.)

For these pencils, I find HB lead to be the most practical. There is little advantage to the harder 2H since the line will always be about 0.5 wide anyway.

Unless the 0.5 mm lead is extended and held vertically against the layout tool, which is not always possible or desirable, one is not quite sure exactly what distal point on the lead will actually contact the wood, and thus how far from the tool the line will be drawn. This can make it difficult to accurately meet a previously drawn line or mark. Sometimes it helps to place the pencil point on the mark and then slide the layout tool up to it.

0.3 mm pencils make finer, more accurately placed lines, but I gave up using them a while ago because the lead is so prone to breaking, even Pentel Hi-Polymer. I have also found colored 0.5 lead to be too fragile.

The way to step up to greater accuracy when you need it is to use a chisel point. For this, I use 2.0 mm 2H lead in a drafting “lead holder.” (It is the silver pencil at the lower right in the opening photo.) Here is a close up of the point:

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For tighter quarters, 0.9 mm 2H in a slim Pentel P209 drafting pencil is useful. (Below, and it is the yellow mechanical pencil at the top right in the opening photo.)

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The chisel point is created with a single pass of 2-3 inches on 400 grit sandpaper with the pencil held at about a 45° angle. Use the location of the clip to consistently orient the pencil – I always keep it down and to the right.

The flat side of the chisel point is placed against the edge of the square to make a very fine line that is placed with near marking-knife precision. In situations where the pencil cannot be held at such a steep angle, the rounded side of the chisel point can be held against the tool or other layout edge.

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A chisel edge can be made with a wood pencil but I find this is messier, slower, and lacks the same feel of precision.

Next: comparison of lines and more on the subject.

Category: Tools and Shop  | One Comment
Author:
• Wednesday, November 20th, 2013

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Or a block plane? Answer: It’s out on the bench almost every time I’m working there. I don’t always know ahead of time what I’m going to use it for, but I know I am going to use it for something, and I know it will get the job done.

Really, this Bad Axe Hybrid Dovetail/Small Tenon saw is the most versatile backsaw I have ever used. The amazing aspect is not only how many tasks it can do, but how well it does them. It cuts wonderfully smoothly. For example, it is now my favorite saw for tenon shoulder cuts – a crucial crosscut, but it also does a nice job for small tenon cheeks – a rip cut.

Here are the specs of my saw, which I have been using for about three months: 12″ long, 0.020″ saw plate, 14 ppi, “hybrid” filing, depth under the back 2 1/2″ at the heel, tapering to 2 3/8″ at the toe. The hybrid filing is about 10° (negative) rake and 12.5° fleam. Remember ladies and gentlemen, BATW makes exquisite handles in a variety of woods in five sizes to fit your hand. As I have discussed in other posts, I also very much like the hang of BA saws.

This is the saw I recommend if you are working with small to moderate size projects and want to own only one backsaw that must be as versatile as possible but that will never be displaced by more specialized backsaws as you expand your tool kit. If you want to further specialize, Mark Harrell has a great offer to facilitate this (see the ninth paragraph down in the linked page).

There is a “soul” in these Bad Axe saws that I feel is very special. These tools improve my work.

There are excellent saw maintenance tutorials and learning materials on the BATW site. Mark also offers hands-on saw sharpening and maintenance seminars at BATW HQ that will doubtlessly take your skills to the way beyond.

Category: Tools and Shop  | One Comment
Author:
• Saturday, November 09th, 2013

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The teeth of a traditional woodworking float, very much unlike a rasp, span the full width of the tool. The cutting surface looks somewhat like a super-wide ripsaw. Iwasaki floats share some characteristics with traditional floats but have important differences in design.

These modern floats are remarkably smooth cutting and leave an amazingly smooth surface on the wood. They have almost no tendency to “catch” on the wood. They also allow great control to produce a true surface, such as in making fine adjustments to tenon cheeks. Aside from very hard steel and very sharp teeth, these floats have interesting features that contribute to their wonderful working properties. 

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As you can see from the photos, unlike a traditional float, each tooth row is discontinuous across its width. Furthermore, each row is curved so that most of the cutting edges are presented to the wood at a skew to the length of the tool. Each gap in the row is followed by a cutting edge just behind it. In this way, these tools act similarly to a segmented spiral cutterhead in a thickness planer, which is also very smooth cutting and produces small shavings and tearout-free surfaces. 

This also helps reduce clogging in the floats. The wood that does accumulate in the grooves is easily cleared by tapping the tool or, more thoroughly, by brushing.

Click on the thumbnail (below) to see the macro photograph and note that below the leading faces of the teeth is a small curvilinear bump. This acts as a chipbreaker, further facilitating a smooth cut without tearout.

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It is easy to get the feel of using these tools – use a firm but gentle approach to the wood. However, keep in mind that a skew is built in to the cutting edge. Since the tool is “pre-skewed,” your natural tendency to skew it as you would a rasp might work against you. If you use a skewed stroke, the actual presentation to the wood of one side of the tooth line is being less skewed and may tend to catch. The other side is being more skewed, and the tooth line may tend to slice along its length. This is more intuitive than it sounds and you will quickly work out an effective approach with the tool for the particular task at hand.

I’ve been using the 200 mm fine flat model for a few years now, and recently bought the coarse 10″ flat model. Even this, the coarsest grade, leaves a nice fine surface on the wood. The chamfer in the enlarged photo (below) is directly from this float.

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Iwasaki floats come in coarse, medium, fine, and extra fine grades, and flat, half-round, round, curved, and plane maker’s models. Woodcraft, Lee Valley, The Best Things, and Highland Hardware have good, though different, selections. They’re a good buy.

Author:
• Monday, August 26th, 2013

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This is the best screwdriver I have ever used. Made by Spec Tools, the Overdriver Pro has been in service in my shop for 23 years.

Similar to many drivers, the magnetic shaft accepts 1/4″ hex bits, which makes it a versatile space and money saver, and it has a ratchet mechanism to reduce hand fatigue and speed the work, though this one is exceptionally smooth and quiet. There is room to store several bits inside the handle.

What makes this tool unique and great is its patented 4:1 on-demand gear ratio. When you want low speed with high torque, use it like a regular driver with a 1:1 gear. When you want high speed with low torque, use your second hand to grip the large collar at the top of the shaft to actuate the 4:1 mechanism, making it easy to exceed 400 RPM. The smaller collar at the base of the handle reverses the ratchet direction.

None of this would matter if it was flimsily built, but this tool is very well made and tough. It has seen plenty of use in all sorts of DIY work in addition to the woodshop. The handle is hard plastic that gives a surprisingly good grip and is very durable, but can be a little rough in sweaty hands. There is no lock setting on the ratchet mechanism, which I would sometimes find convenient when making a final torque adjustment on a screw and want to back off a little.

The model pictured above has been replaced by the OD-2001 – same tool, different color. It and the RGO-5412, which has a friendlier looking handle containing some firm rubber, are the company’s pro model straight drivers. They cost more but are worth it.

This screwdriver does not seem to be sold by many stores so I thought readers would like to know about it. Spec Tools is located in eastern Massachusetts, and you can order from their site.

This review is unsolicited and uncompensated.

Addendum: I would like readers to know that after I posted this review, the nice people at Spec Tools sent me a package of a few tools, which they insisted I keep with no expectations on their part. I did not solicit, hope for, or at all anticipate this, nor did I subsequently change the content of the post. It is not why I wrote the review. Therefore, I have kept the tools.

Author:
• Friday, May 03rd, 2013

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These saws solve problems.

The Japanese azebiki saw, at the top in the photo, has curved tooth lines designed to start a cut in the middle of a board. One side is rip, the other crosscut. The neck is thicker toward the handle, which, along with the short cutting length, makes this saw fairly stiff for a Japanese saw.

The azebiki works well cutting against a straightedge wood guide to make kerfs for starting grooves and dados, including sliding dovetail sockets. Use a chisel to clear the waste and a router plane to true the bottom. I prefer an electric router for this work but sometimes it is too risky or awkward, so it is good to have hand tool options.

For all sorts of odd small-scale sawing tasks, the azebiki saves the day. It is inexpensive and worth having in the shop.

The Z brand 6″ keyhole/compass saw (S-150), at the bottom in the photo, has Japanese three-bevel crosscut-style teeth (17 tpi) with variations in the set to help clear waste. This saw cuts more smoothly than other Japanese and Western keyhole saws that I have tried.

At .035″ thick, it is stiff enough to maintain control when sawing curves, as long as the stock is not too thick. Of course, it cuts on the pull stroke, which occasionally is a disadvantage when jabbing into a small hole to start a cut.

I bought the skinny keyhole saw with the wooden handle many years ago, and it hangs around waiting for an odd situation where there is only a tiny hole or narrow slot to sneak into with the nose of the saw. It would be expecting a lot for a saw of this size to cut smoothly, and indeed, it does not.

The little guy keeps his place on the roster because, though infrequently, he continues to make plays when needed. And he doesn’t take up much space on the bench.

Second from the top in the photo is a Z brand flush cut saw (S-150). You might not need this type of saw if you use the trick I discussed in an earlier post, but I still like having it as an option. The .016″ thick plate is very flexible, so it can be bent to allow the handle to be lifted away from the work surface, as you use the fingers of your other hand to press down on the saw blade.

To prevent scratching the work, the three-bevel crosscut style teeth (21 tpi) have no set whatsoever. I prepped the saw by lightly working each side on a medium sharpening stone to ensure that any trace of burr would be gone. As discussed here, binding can be a problem with this saw but it works well enough for shallow cuts.

Z brand saws are well made. The replaceable blades are inexpensive, so there is no worry if you occasionally abuse them when desperately trying to do an awkward job.

This part 8 concludes the My Saws series. Or does it? Our current woodworking world has some great saw makers at work, modern technology, and an expanding appreciation of the woodworking wisdom of our forebears, so a new saw for my shop is always a possibility. The bottom line will always be: how the tool can help me make things that I so dearly want to make.

Note: The entire series, parts 1-8, of “East meets West: My Saws” can viewed on a single page via this link.