May 22, 2012

#37. WIA: Part 2 of 3 – Forgotten Workbenches and Workholding

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Total running time: 39 mins., 52 seconds

In this episode Christopher Schwarz, Editor of Popular Woodworking and Woodworking Magazine, presents, discusses, and points out pros and cons of several benches and their features:

  1. The European bench: He is not happy with this form, but also is not anti-European-form. His problem with this one: People take old principles and apply them to other benches. He likes to apply the kitchen door test (typical sizes we work on) and the kitchen carcase test (pushes him to narrower benches) to all benches, for suitability.
  2. Materials: For example, the Nicholson bench required only a small amount of material. He likes soft woods for his benches; SYP (Southern yellow pine) does not move much, is stiff ((no flexing), it dents (no detriment), and he can flatten a workbench in 45 minutes using a #8 jointer hand plane diagonally. Also, SYP does not sag; however, one of his benches has developed a low spot i.n the middle. He believes the critical area that requires total flatness on a bench top is the front 8 inches to 10 inches.
  3. Roman style bench: This is the one he finds in most pro shops. Pros: It is simple, and stout. Con: No planing stops, etc.
  4. The French undercarriage: Pros: Great clamping ability. Con: Requires a log of material, primarily due to its massive legs.
  5. The English bench: Pros: Requires very little wood. Con: Undercarriage clamping is tough.
  6. The Danish bench: Pro: Easy to knock down. Don: Can’t clamp easily on the front.
  7. The Shaker bench: Pros: Great looks, and storage for everything and everybody. Cons: Hard to clamp on.
  8. Tool trays: Cons: They are always full of “stuff”.
  9. The Hayward bench: The thin top flexes; but the front apron takes away some of the flex.
  10. Top thickness: At 3″ to 4″, the beam strength is enough to provide support on the legs. Holdfasts reach their holding limit around 4 inches.
  11. Bench height: For hand planing, it should hit the joint between the pinkie and the palm of the hand.
  12. Bench width: Finds that 22″ is great, but 18″ tends to be tippy.
  13. Bench finish: NO slick film. The formula he uses is 50/50 BLO (boiled linseed oil) / varnish, with solvent added to make it possible to wipe on the mixture. There is no need to finish the underside, unless the owner wants to finish it.

Next: The ending of the session on Forgotten Workbenches and Workholding.

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Related posts: Watch more videos from Woodworking in America on this blog.

#33. WIA – Scrapers: History, Preparation and Use, Part 1

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Run time: 34 minutes, 30 seconds

Christopher Schwarz, Editor of Popular Woodworking (PW) magazine, does a terrific job in this session. He is entertaining, and has an uncanny ability to convey his message accurately and succinctly. I split this session into three parts, for easier downloading and viewing. This is the high-resolution video (as high as I can get with an old video camera).

Background:

This session is Schwarz’s presentation on a topic he researched, and published on the PW blog on April 20, 2007. The published article shows the steps required to properly do the job, and mentions “…a list of 14 different techniques for sharpening this rectangle of steel that have been published since 1875.” In the video he talks about the references he found, from “12 dead guys and 2 living”, and which were the foundation of this work.

For Part 1:

In this first Part, Chris covers the historical background (nothing about sharpening scrapers appears in the literature until 1875), his work on wood failure (Types 1, 2, and 3 shavings, and why tearout occurs), and the first part of scraper preparation: Filing the edge.

The next two episodes will show the rest of the session with Chris, and the wonderful shavings he produces with a well-sharpened scraper.

Apologies:

In three areas I came close to disaster – the camera and tripod came close to falling to the floor… My apologies, as I also had trouble with tight tripod movement. But the entire session is on video.

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