May 22, 2012

New Leigh hold-down clamps: Workholding made easy

Christopher Schwarz made a terrific presentation at Woodworking in America in November: Forgotten Workbenches and Workholding.

During his presentation Chris covered workholding (it will appear in the videos for Parts 2 and 3 on this blog). As a result of this presentation, I started doing some serious thinking about my European style workbench, and how I could improve clamping of work pieces when hand cutting dovetails, clamping jigs in place, etc.

The existing setup was slow and cumbersome:

One option was to use holdfasts; but this meant drilling holes through the 3-1/2-inch thick bench top. And during The Schwarz’s presentation, a little light went on in my brain. I remembered Leigh Industries had announced a new product not long before the conference in Berea: Their hold-down clamps, available in two models. The capacity of the clamps is 3 inches, good for most work we normally do at the bench.

You can read a terrific review of these clamps by Dean Bielanowski, at OnlineToolReviews.com. I am not writing this to do another review; but rather, to share some uses I quickly found for these new clamps since I received them, 20 hours ago. In my opinion, these clamps solve many workholding problems at the workbench; they are terrific! Well, I did manage to include a quick review.

The two versions of the hold-down clamps:

Bench mount: This version allows use of existing bench dog holes and, therefore, would allow use close to the front edge of the bench. The bench mount is a quick, easy way to hold down even small work pieces:

A huge plus: The bench mount version is also used on the drill press! I have not tried it, but will dedicate one as soon as another clamp arrives.

Surface mount: The surface hold-down clamp provides another way of cutting dovetails at the bench:

Sometimes, clamping jigs can be cumbersome; it depends on the style of the workbench. My European-style bench, with the bank of cabinets below the stretcher under the top slab, created a challenge to use clamps. But holding down the FMT is no longer a challenge:

1. On the left side, the bench clamp:

2. And on the right, the surface mount clamp:

3. The FMT with both sides clamped – easy:

I now envision installing several anchors, to hold surface mount clamps along the front face of the bench. Think crochet (pronounced crow-shay) the easy way; but now you can have one crochet on the left, and one on the right-hand side. Great for edge-jointing, and a terrific way to hold a board on edge on the front face of the bench, in addition to using the face vise. I invite you to read several references to the crochet and its use in workbenches at the Woodworking Magazine blog.

I will not sell my D4: I have been asked several times if I want to sell my Leigh D4 dovetail jig, since I am improving my skill at hand-cutting dovetails. My reply is still that I cannot, and will not sell the D4; it is my workhorse when I make multiple drawers and large dovetails carcases. I am reserving hand-cutting dovetails for very small drawers, impossible to cut with the D4.

What other uses can I find for these new clamps? I will share as I find them. In the meantime, I would love to learn how you are using them.

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#36. WIA: Part 1 of 3 – Forgotten Workbenches and Workholding

Download Quicktime
Run time: 40 minutes, 21 seconds

First, a lengthy apology: The lighting in the room used for this session was challenging at best. As a result, I compensated exposure in the video camera manually, as the automatic system kept being fooled by some lights in the background. An overhead light was in front of the projections screen, which interfered with a small portion of the images. And I also I continued to have tripod problems, so panning side-to-side, and tilting, were terrible at best (I tried to keep these to a minimum).

Second: Be on the lookout for the moves, now famous, that lead to The Schwarz Dances. NOW you can see them in the context of his terrific presentation. Hint: Around 31:30, and also 36:45 of this Part.

Over the years, Christopher Schwarz has built many benches – from the Roman style door-and-saw horse, to much-improved models based on old references. And he has published a book that has become a true library reference for many woodworkers: Workbenches, From Design & Theory to Construction & Use.

Now to Part 1: From my notes, a mix of some comments and facts from the presentation by Christopher Schwarz. I hope the following will get your interest in watching the video:

  • Target: How to build a bench at a reasonable cost – It must appeal to readers. Thus, the $175 bench.
  • Evolution of a simple bench, over time.
  • “Fights” with Joel Moskowitz in Joel’s apartment, while looking at his world-class woodworking library – Roubo found; Plate 11, the start of The Schwarz’s “conversion”.
  • Built the first Roubo for $300, including the crochet (pronounced “crow-shay”, not “croh-chett”…) and leg vise, and put it through its paces.
  • Some comments on the minuses of the European benches.
  • His research led Chris to ask himself “…what other early, cool benches might be buried in the literature?”

I have several pages of notes, but won’t post the remainder here. It is all in the video.

Next: Part 2 of the session on Forgotten Workbenches and Workholding.

Related Posts:
More stuff from Woodworking in America on this blog.

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