May 17th, 2009 by tom

Following the ‘Signs’

This morning, while edge planing a piece of Cherry I decided it would be a good time to demonstrate a trick I frequently do to determine the ‘flatness’ of the surface being worked. In the next photograph I’ve just taken a few through shavings down the reference edge. Please note that the stock is simply sitting on my bench top; it isn’t ‘dogged-down’ or clamped in any way. This will insure I’m not pinching the work, creating a bump or hollow over it’s length. I do have it resting up against a thin, scrap piece of plywood secured across the width of my work bench as well as having my bench dogs raised slightly along the front edge to keep the piece from moving about. With this method there’s no danger of transforming the profile of this important, reference edge in any way while I’m working it.

 

This is important and should be noted.

I arrived at this point after the larger ‘work’ or ‘reference’ surface was first determined and flattened. This first face surface being the most important, it will be our ‘reference’ surface to which all of our other lay-out will be referenced from. Some woodworkers when using the term ‘face side’ are usually referring to the outside ’show surface’ which can get a bit confusing…so to be clear-the work surface is actually my inside ‘reference face’ while dimensioning and laying out.
Now the trick I mentioned is a simple visual solution that clearly determines what your surface edge really looks like. Winding sticks and straight edges are great tools and visual aids showing you how straight and square you’re work really is; even a light rub with your finger tips can assist the eyes in determining this narrow, ’surface flattening’. But to be absolutely sure the reference edge is flat you’ll need some hard evidence…these are the shavings lying before you.If you look closely at the photos you’ll see the shavings I’m taking-these are only possible with a depth of cut in the neighborhood of one thousandth of an inch and taking a full, through shaving you’ll begin to see the signs. This type of shaving can only be obtained after you’ve flattened and tuned the sole of your bench plane as well as working with a plane iron that is razor sharp!
Lying there before me is a kind of road map…this clearly shows where there are still dips or hollows in the surface. In the next photo you’ll see how I’m getting closer to a truly flat edge. Again, the ‘map’ in the edge grain is unequaled in its ability to clearly demonstrate the progress. Simply take a fresh shaving and carefully unroll it. I’ve laid it on my steel flat edge to make it easier for you to see. With each pass these small ‘holes’ in the shavings get smaller. Another shaving and I’m almost there. The small ‘holes’ or ‘tears’ in the edge grain shaving mark any low or hollow spots in the surface. I can plane ‘around’ these valleys and bring things closer together. In the bottom photo you can see the three passes it took: from right, my first pass with two big sections that are obviously low. The middle shaving in the photo represents the next pass bringing the surfaces closer together; and finally the left shaving being my third pass is almost complete. I’ll follow with one or two stopped shavings to uniformly ‘hollow’ the length of the edge slightly and finish off with one or two more through shavings calling this side done.

My steel straight edge, winding sticks and engineers square together will tell the story of square and straight but for these tiny surface hollows, in the thousandth of an inch range, this road-map trick is something you should try. It can be difficult to see with the naked eye any slight valleys and a finger tip touch can only get you so far…this method of watching these signs will give you the confidence to move on with the dimensioning process of the lumber being worked. I should also mention the technique of ‘hollowing’ the edge along it’s length is a technique best demonstrated by David Charlesworth. His DVD on hand planing techniques available through Lie Nilesen Toolworks is extremely imformative and should be viewed by all using hand planes in the workshop.

Cheers!

March 16th, 2009 by tom

“All work and no play makes Jack a dull boy…”

One cold evening, this past November I was taking a break from writing; surfing around the web, from E-Bay to Kijiji through Craig’s List and the like. I stumbled over an add that simply read ‘Old Tools’. I clicked on the add and viewed the pictures; nothing out of the ordinary, a few old hand saws, a couple of wooden planes and then the usual bottom of the tool box items such as auger bits, broken hammers a screwdriver or two…
I noticed as well in the photo a decent looking wooden bodied plough plane and decided to e-mail the seller for a quote. $100. bucks for the lot. Perfect. I made the deal and received the box of antiques. They’ve been sitting in my shop now for a few months and last night I decided to go through the items and have a closer look. Turns out the two wooden bodied planes, a Jointer and this Jack are pretty nice. They’ve both seen some use and have the normal wear and tear, a few decades of grime and decay but both seemed to have been well kept by their previous owners. I took the Jack plane out and disassembled the parts. I gave the entire surface a good going over with some mineral spirits and then this morning I started to re-tune it. The following are the steps I took to resurrect this old Jack plane.
Beginning at the soul, where everything should begin, I took some 100 grit 3X Norton sandpaper and with some double sided tape applied it down to a sheet of safety glass I have for sharpening. I checked the bottom before hitting the abrasive with my winding sticks to see if I could detect any noticeable humps or valleys. Some dark pencil lines scribbled across the bottom will help to keep track of my progress. I’d say no more than 10 minutes on the 100 grit and things were getting pretty smooth. From there I moved along to some 220 grit and repeated the process, again making some pencil marks and carefully monitoring my work. A few more minutes and I was done. I repeated these same steps with the wedge until it too was in the ‘house of pancake range’.
With the soul of the plane addressed and the wedge ready to work I moved onto the chip breaker and iron. If and when you watch my new DVD, (hopefully this coming Christmas when Santa stuffs it in your work sock) you’ll see me explaining some of the advantages and disadvantages in Flea Market tools. I mention that if you do decide to fix up an old tool that I don’t recommend reusing the iron. Instead I usually opt to replace it with a thicker, modern variety. I should say that this philosophy usually rings true, especially with old Stanley planes that originally came with thin irons that are prone to chatter. This plane however had a nice thick iron that seemed like it had lots of life left in it. With that I went to work on flattening the back. Beginning with an aggressive 220 grit Norton water stone I started the ‘ol pushin’ and pullin’ routine. About two solid hours in I had to ask my wife to give my back a rub…serious muscle aches. I was thinking to myself that I should have listened to my own advice but with the couple of hours already invested, I had to continue on. Moving on up from 220 to 1000 to 4000 and finally 8000 the iron was finally there.

Flat…just like the tender spots on my thumbs from pressing down onto and into the antique tool steel. I turned the piece over and checked it across the width for square; not too bad but needed some work. I re-established a straight, square edge on my slow speed wet-grinder, (the only powered tool in my workshop I might add) and then onto re-establishing the bevel. 25 degrees and back to the stones. 1000, 4000 and finally 8000 to finish adding a secondary micro-bevel to the leading edge.

Back over to hone and cut off the burr I finish with the ‘ruler trick’ and call the iron done. I cleaned and dressed the chip breaker as well, actually using my water stones to flatten the leading edge. Some more sand paper on glass to clean up the years of rust and a nice light coat of machine oil for both. You’d be surprised at how quickly rust will develop on old tool steel like these. Seems even more so once you’ve cleaned off the grime that was probably preserving them in some strange way. A nice thing now, which always happens at some point in the refinishing of old tools is the story starts to emerge. Up until this point I really had no idea of where this plane had come from. There were no visible marks or emblems anywhere until the dark dirt was removed from the top of the iron. Ohio Tool Co. Ahhh, good to meet you sir. I Googled the company name and found very little information; the company it seems didn’t last all too long but here is a little history for the galoots in the room.


1823-The Ohio Tool Company started operations in Columbus, Ohio.

1841 to 1880-The firm made use of Prison Contract Labor from the nearby Ohio State Penitentiary.

1851-The company was incorporated with a capital stock of $190,000. It employed about 200 and was frequently called “The Plane Factory” since carpenters’ planes were the chief article of manufacture.

1858-The Ohio Tool Co. officers this year were George Gere, President; A. Thomas, Secretary and Treasurer; and C. H. Clark, Superintendent.

1865-Patents issued in this year for mortising machines used in cutting plane stocks helped to speed production.

1887-The Ohio Tool Co. employed 70 hands.

1893-The Auburn Tool Co. and the Ohio Tool Co. merged with offices in New York and factories in Auburn, N.Y. and Columbus, Ohio.

1900-The Ohio Tool Co. received the highest award given on carpenter’s tools at the Paris Exposition.

1903-The Business Directory of Columbus lists the company at 63 North Scioto Street which was close to the Scioto River. “Scioto” was marked on their second grade planes.

1914-The Company moved to a new plant at Charleston, West Virginia.

1920-The Ohio Tool Company ceased operations.”

With the chip breaker and iron ready to go to work I turned my attention to the throat and mouth of the plane. A little file work to re-establish the edges of the mouth and then into my tail vise to clean out the throat.I test fitted

the newly sharpened iron assembly and was happy with the fit. I then gave the entire body of the plane a nice heavy bath of boiled linseed oil. Ahhh….goes down good. The age of the tool and the dryness of the wood soaked up the oil in no time at all. From there it was now late afternoon and finally time to take it for a test drive. A few small knocks with one of the hammers that came in the box of tools and voila! A nice paper thin shaving rolled up and out of the throat. Like a boxer past his prime getting a second chance at the belt; a title shot. This was a good day for the Ohio Tool Company and a good day for me. It wasn’t about how much the plane cost or how long it took me to get it back in working order; it was simply a day spent in discovering a small piece of some history all but forgotten…Cheers!

The overall dimensions of the plane are 16″ long x 2 7/8″ wide. The iron is 2 1/4″ wide and slightly better than 3/16″ in thickness. I mentioned the nice old Jointer and wooden bodied plough plane; they’ll no doubt get this same treatment sometime in the future when my back stops aching and my thumbs return to their normal shapes! Stay tuned…