Archive for the Category ◊ Tools and Shop ◊

Author:
• Tuesday, July 20th, 2010

If you’ve read the two previous posts on this topic, you might think that I’ve thus settled contentedly into scraping plane heaven. Not quite, there is one more thing.

The scraping plane is generally thought of as a finishing tool, analogous to a smoothing plane, suited for difficult, figured, dense woods that are prone to dreaded tearout. However, there are times when I use the scraping plane one step prior to finishing the surface. I will explain.

Like most woodworkers, I dimension almost all my wood by machine. With figured woods, shallow tearout often remains despite using good technique and well-tuned machinery. One method to get rid of this shallow tearout would be to first use the jack plane cross grain, possibly initially with a toothed blade, then go to the scraping plane.

Now I’ve got another option that is on a finer scale. I have prepared one of my Hock scraping plane blades with what I will call “microtoothing.” This toothed blade is not quite like those that are commercially available and often used to prepare a substrate for hammer veneering. I abrade, lengthwise, the unbeveled side of a 0.094″ thick Hock blade using a coarse file and very coarse abrasive paper, then make very shallow cuts with a fine saw file, about 20 or more per inch. I then file and medium hone the 45̊ bevel and burnish as usual at 15̊.

The photo below shows the microtoothed blade below a conventionally prepared blade.

The result is not a dull scraper. It is sharp, but has “microteeth.” It does not produce dust, as would a dull scraper blade, but rather shavings that resemble ultra thin cheese shreddings. (See photo at top.) The fine or coarse serrations split the shavings at every depth of cut. The huge advantage is the extremely smooth cutting action. There’s never a hang-up, slice, or chatter. The plane can be worked back and forth on the wood with abandon. The very shallow ridges that remain on the wood are quickly dispensed with by a conventionally prepared blade in the scraping plane.

This has been a very effective way to reliably remove shallow tearout with the scraping plane in the worst of woods. I use it when the jack plane procedure would be too much, but going to a clean, conventionally sharpened scraping plane blade would take too many fastidious passes. It has even allowed me to do away with thoughts of purchasing a drum sander.

Author:
• Sunday, July 18th, 2010

Now for the blades. Veritas offers three choices: a 0.055″ thick blade that is meant to be bowed, a 0.125″ (1/8″) that is not bowed because of its thickness, and a 0.125″ (1/8″) thick toothed blade. I find that the 0.055″ blade, when sharpened with a 45̊ bevel and burnished at 15̊, as recommended, is too thin to fully avoid chatter on tough woods, even with a skewed stroke. I sharpen this blade at 90̊ and burnish at about 7-8̊, just like a card scraper. This avoids chatter and works well, but I would like the cutting action to be more aggressive. As for the 0.125″ blade, I feel it has the disadvantages of a thick, unbowed scraper blade: the tendencies to catch, dig in, and slice out of control.

Here is what I now like best in the Veritas plane: Ron Hock’s 0.094″ (3/32″) blade. I think it’s just right! It can bend in the Veritas plane just enough to take a slight bow and is thick enough to eliminate chatter. Preparing the blade with a clean edge, 45̊ bevel, 15̊ (off horizontal) burnishing, setting the angle as described in the previous post, and adjusting for a light cut, produces a nice cutting action and a beautiful surface on wildly figured, dense woods – just the kind of wood that you need this tool for.

The photo below shows the Veritas 0.055″ blade on top and the Hock 0.094″ blade underneath.

I prefer to sharpen the blades with a straight, not cambered, edge because when the plane bows the blade, a sufficiently cambered blade projection is automatically produced. I’ve tried sharpening with a cambered edge and have found that it is more difficult to file and stone the edge. Furthermore, it is more difficult to initially set a cambered-edged blade into the plane with a centered, symmetrical projection because it can rock against the bench surface. A straight-edge blade produces no doubt.

In summary, I love the Veritas large scraping plane with a Hock blade. Hopefully, I will be able to upgrade the rear handle soon, though for some reason the Veritas tote doesn’t bother me as much on the scraping plane as it does on their bevel-up bench planes.

In the next post, I will describe an unconventional preparation for a second Hock blade in the arsenal which further expands the usefulness of this plane.

Author:
• Saturday, July 17th, 2010

Here are my preferences in a scraping plane, followed by the styles that are thus disqualified in parentheses:

  • a sole long enough relative to its width to register on the work and not “fall off” at the end of a stroke (not: Stanley #80 and other spokeshave-like styles)
  • an adjustable frog angle (not: #’s 80, 85, Veritas small scraping plane)
  • a mechanism to camber (bow) the blade (not: #’s 80, 85, 12, 112, 212, Veritas small)
  • a mechanism to easily and precisely fine tune the depth of cut (not: #’s 80, 85, Veritas small)

I know of only one manufactured tool that meets all these criteria: the Veritas large scraping plane. All of this is a matter of personal preference, and there are many other high quality scraping planes available, most notably from Lie-Nielsen, that you may like better. I will explain why I like the Veritas, a patented, unique tool.

The deal-sealer for me is that the blade can be bowed. This is done by simply applying pressure with a thumbscrew which meets the lower back of the blade. This does more than just avoid the corners of the blade from digging in. That effect, after all, could be accomplished on a non-bowed blade just by cambering the cutting edge (and/or rounding the corners) in the sharpening process, just as one might do with a plane blade. More important, this bowing pre-tensions the cutting edge, just as you do with your fingers when using a card scraper. This greatly helps reduce blade chatter.

The frog angle adjustment mechanism can be set just right considering the angle at which you burnished the blade, the wood, the desired aggressiveness of the cut, and the state of wear of the blade’s hook. I sharpen the blade bevel at about the standard 45̊, and take the final burnishing passes at about 15̊ off horizontal. I set the frog at the same angle that the blade lightly bites into the wood when held by hand. This is usually somewhere around 10-12̊ forward of vertical for a fresh hook.

Just as important, this mechanism acts as a very precise depth of cut adjuster. Because the pivot point of the frog is slightly behind (closer to the tote than) the point where the blade meets the wood, slightly tilting the frog further forward from vertical will deepen the blade projection (depth of cut).

The procedure to do this precisely is somewhat counterintuitive. To tilt the frog less (shallower cut), spin the front nut away from the thread housing to create clearance, put light forward pressure against the frog, and “tighten” the rear nut against the housing. Retighten the front nut. To tilt the frog more (deeper cut), spin the rear nut away from the housing, put light rearward pressure against the frog, and turn the front nut against the housing. Retighten the rear nut. This method allows you to see and feel the frog moving slowly and precisely.

Next, I will discuss blade options.

Author:
• Saturday, July 10th, 2010

I like my Veritas low-angle, bevel-up smoothing and jack planes, but I do not like their rear handles (totes). The handle has broad flat sides, and is more vertical and less curvy than a classic Stanley or Lie-Nielsen.  

While some woodworkers may like the design, I find it to be unfriendly to my hand. Here is my prototype (in poplar wood) of an alternative. The shape is based on the classic handles. It feels right to me.

Adapting this shape to the Veritas handle mount takes some engineering. The Veritas handle is secured with two bolts that enter the base at an angle. The company supplies a full-scale measured drawing of its handle that also helps to design your own version. However, the two-bolt system prevents what I consider a nicely shaped handle because the curve intersects one or both of the bolt pathways.

 

 

 

 

 

 

 

 

My solution involves using a short front bolt to replace the stock bolt. The counterbored stock rear bolt runs through the full length of the handle while the countersunk replacement front bolt goes through just the front projection of wood to enter its hole on the mount. This allows the wood above it to be cut away to create a hand-friendly curve in a classic style. The back of the new handle projects beyond the mount.

 

 

 

 

 

 

 

 

For a permanent handle, bubinga would be the best choice because of its strength. It is also a beautiful wood and will match the Veritas front knob.

I mentioned my dislike of the Veritas bench plane totes in a previous post. Since then I learned from Chris Schwarz’ blog that Bill Rittner is making superb quality replacement handles for old Stanley planes. I asked Bill if he was making an alternative for the Veritas handles. He is not yet but is interested. I hope he will because, while I enjoyed developing a solution to the Veritas tote “problem,” it was painstaking to make even the prototype in easy-going poplar, inelegantly sanded to 120 grit. I’d rather make furniture. Pending further testing and refinement, I think that many otherwise happy Veritas bench plane users would appreciate this kind of tote professionally made.

A helpful article, “Totes and Knobs for Handplanes,” by Charles Murray, in the November 2009 Popular Woodworking describes the use of a shop-made jig to make a plane tote. The resulting tote has flat sides with roundovers made on the router table. However, it would take considerable additional hand work, starting with a thicker blank, to produce the nice elliptical cross section seen in Bill’s totes. 

I will have more detail on the design and construction in a future post, and possibly an update from Bill. I also have to do more shop testing of the prototype.

Category: Tools and Shop  | 8 Comments
Author:
• Tuesday, July 06th, 2010

Here’s a little tip that you may find helpful. I use these little brushes constantly in the shop.

The lower one in the picture, with the red collar, is labeled “oily.” I use it often to clear plane and spokeshave throats of dust and jammed shavings, especially when I need a clear look to adjust the projection of a blade. The bristles have been shortened to give them helpful stiffness. This brush gets all sorts of other duties clearing dust and chips in small tool places and spaces, including where there may be some oil hanging around. This might include bandsaw bearings, screw heads in machinery, plane and blade parts, and so forth.

When cutting joinery, I do not want to use that brush for clearing chips and dust that didn’t get blown away from tiny spaces. So, I use the other brush in the photo, labeled “for joinery.” It stays away from any oil.

I doubt this simple work habit would be found in woodworking books and articles. It’s the kind of thing that I imagine an apprentice might pick up from his teacher without it ever being mentioned. That’s one place where blogs are handy, to share this kind of tip.

Category: Tools and Shop  | 3 Comments
Author:
• Saturday, June 26th, 2010

Bevel-up, low-angle smoothing, jack, and jointer planes made by Lie-Nielsen and Lee Valley have 12 degree beds for their blades. This style of plane is simple to set up and especially versatile. The use of a thick blade, 3/16″ or more, supported very close to its cutting edge, and an easily adjustable throat opening contribute to effective planing.

One of the most important advantages of these planes is their ability to employ blades sharpened at different angles to manage a range of woods. With the 12 degree bed, a blade sharpened with a 33 or 38 degree bevel (secondary bevel) results in a 45 or 50 degree cutting angle, respectively. Either would be a reasonable choice for general work.

To get a 60 degree cutting angle for difficult figured woods, the blade needs a 48 degree bevel. The result is effective but this makes the blade more difficult to sharpen to a keen edge. Furthermore, this is a large wedge to drive through the wood. I believe this creates more resistance at the cutting edge, making the tool cut less cleanly and harder to push, even aside from the effects of the higher cutting angle.

If the blade bed was 20 degrees, it would require a more manageable 40 degree blade bevel to achieve the 60 degree cutting angle. A 25 degree (perhaps in O-1 steel) or 30 degree blade bevel (giving a 45 or 50 degree cutting angle, respectively) could be used for tamer woods. Another point, minor but helpful, is that a blade bedded at 20 degrees does not require as much actual camber to achieve the same functional camber as does one bedded at 12 degrees. Explanation here.

I imagine a 20 degree bed would also make the sole of the plane less prone to distortion from the pressure of the lever cap. Supporting this idea, I have not found distortion to be a problem with Lie-Nielsen’s shoulder planes with their 18 degree beds, but Lee Valley’s shoulder planes with their 15 degree beds have been a problem for me, even with rather gentle tightening of the lever cap. The 3 degrees seems to make a difference.

Considering other bevel-up planes, the fabulous Lie-Nielsen #9 “iron miter plane,” which I use for shooting end grain as well as long grain, has a 20 degree bed. Block planes come in 12 and 20 degree beds. The 20 degree tools seem to work just fine on long grain. Karl Holtey’s #98 Smoother has a 22.5 degree bed, and Philip Marcou’s S20A, which is designed to use standard Veritas blades, has a 20 degree bed. I’ve never used the Holtey or Marcou but I can’t imagine they are anything less than wonderful.

I also do not think cutting end grain is good justification for the 12 degree beds on the smoothing, jack, and jointer planes. I do not think end grain requires a 12 degree blade bed and I am skeptical of even an advantage over a 20 degree bed. Indeed, my Lie-Nielsen shoulder plane at 18 degrees works beautifully on end grain.

I own the Veritas bevel-up, low angle smoother and jack and have used the Lie-Nielsen bevel up planes. While their features differ, both makers produce superb planes. It is the 12 degree bed that I question.

I am a plane user, not a plane maker, and certainly have room to learn more. I wonder if any of these makers would care to comment on this issue.

Author:
• Tuesday, June 15th, 2010

The bandsaw holds a truly special place among woodworking machines because the woodworker interacts with it differently. I steadfastly contend that developing skill with a quality bandsaw can have greater effect on a craftsman’s development than with any other machine.

In use, the bandsaw feels to me more like a motorized hand tool. In contrast to operating a table saw, where the idea is to make the outcome of the cut a done-deal as much as possible beforehand, cutting at the bandsaw usually has an aspect of freedom. With the exception of resawing, I much more often cut to a line by eye than by using a fence, using it as a mostly non-jigged power tool. As evidence of the creativity fostered by the bandsaw, I use it almost exclusively in sawing pieces for mock ups. I can also feel the bandsaw’s cutting action – much like a hand tool – much more than with a table saw or router.

The bandsaw also allows us to use wood in ways no other power tool can. Resawing, cutting curves in thick stock, and cutting non-parallel to the edge of a board are tasks at the heart of how I build with wood. True, I could do those jobs with hand saws, but I prefer the bandsaw the great majority of the time. For woodworkers doing other types of work, such as turning, chairmaking, shop-made veneering, boatbuilding, and musical instrument making, the bandsaw is pivotal in getting the most from nature’s bounty of wood.

Consider what is involved with setting up and tuning a bandsaw compared with other machines. When setting up a jointer, it is a fairly clear-cut, though hardly easy, task: tables flat and parallel, all knife edges parallel to the tables, fence square to the table, etc. Lots of imperatives, not many decisions.

The bandsaw, on the other hand, leaves more room for personal preferences within a range of reasonable options. Do you like the wheels flat or crowned? What style of blade guides do you prefer? Where do you like to set the thrust bearing? How much tension on the blade? On these and many other bandsaw tuning issues, reasonable people can disagree. Though only two different blades cover almost all of my needs, it took me considerable research and trial and error to refine those choices from the myriad available, leaving aside many other good ones.

This is another way of saying that the bandsaw allows for personalization. In fact, it really demands that a skilled user exercise his preferences more than with other machines.

So, while I might sound like a bandsaw salesman, my real purpose in this post is to encourage woodworkers who are building their tool set, and who might be, ahem, on the fence, to put the bandsaw– and bandsaw skills – high on the list. It has the versatility and freedom of a hand tool, with a machine’s muscle.

Category: Tools and Shop  | 6 Comments
Author:
• Sunday, May 30th, 2010

Sometimes an inexpensive tool can be designed and made perfectly well enough to do its job.

I wanted a new crosscut saw for breaking down stock, something faster than what I had been using. I found it at my local Woodcraft store: a Pony brand 22″ handsaw, manufacturer’s model #66221, for $15.99. For the inelegant task of rough crosscutting, this tool vastly exceeded my expectations. It cuts like a Tasmanian devil and tracks surprisingly well.

The diamond ground teeth, 8 ppi, each have 3 bevels which make them essentially Japanese cross cut teeth with a negative rake. The induction hardening makes them unable to be sharpened in the shop, so when they dull, no doubt after a very long time, the saw will go to the metal recycling pile. The manufacturer states that the saw cuts on both the push and pull stroke, though the push stroke does most of the work. Not surprisingly, the saw does not rip very well.

I measured the saw plate, which is straight enough, at 0.040″ with 0.004″ set, each side. The plate is not taper ground (of course, it’s $15.99!) so it is helpful to keep it waxed to avoid pitch build up from some woods and thus slower sawing. The soft-grip handle is adequate, though it tends to lure my hand into a hammer grip rather than a better grip with the index finger extended. The handle acts as a 45/90 square, quick and handy for stock breakdown.

Several times in this blog, I’ve made the case for buying the best quality tools one can afford, going beyond tools that are just “OK.” Yet, I really like this saw because it does its job, which requires more power than finesse, very well and with ease. I think that makes it a good saw even though it lacks certain refinements that I can do without. That leaves more of my woodworking budget to devote elsewhere. Where? Take your pick of great saw makers – Lie-Nielsen, Bad Axe, Wenzloff, Lunn, etc., or what I own several of: Gramercy.

[As with other tool reviews on this blog, this is unsolicited and unpaid.]