Regardless of which type of screw you use, you'll need to flip the panel and use a countersink drill to on all of the exit holes. Drilling MDF leaves bumps, the countersink bit will remove them, and will create a little bit of space for material drawn up by the screw from the second sheet of MDF. You want to remove anything that might keep the two panels from mating up flat. I set a block plane to a very shallow bite and ran it over what was left of the bumps and over the edges. The edges of MDF can be bulged by by sawing or just by handling, and you want to knock that down.
Over 1,400 color photos and drawings illustrate the methods, from simple butt joints to angled tenons and complex scarf joints. A project as simple as a box, for example, has a dozen ways to solve the joinery question. And, since many joints can be used interchangeably, Joinery leads you through making the right choice for your project based on the function of the piece, the time you have to work on it, your skill level, and your tooling.
The last thing is to semi-permanently attach the bolts for the vises. Given the amount of work necessary to get to the bolt heads, once the top is joined, I had intended to tighten them up so they wouldn't spin, and lock them that way with blue Loctite. (That's the strongest non-permanent grade.) That didn't work. What I found was that the bottoms of the countersinks weren't quite flat, and when I tightened the nuts down that far, the ends of the bolts would be pulled far enough out of alignment that the vise bases would no longer fit. In order for the vises to fit over the bolts, I had to leave the nuts loose enough that the bolts had a bit of wiggle - which meant that they were almost loose enough for the bolts to spin. So I put Loctite on the nuts, to keep them from unscrewing, and filled the countersinks with Liquid Nails, in hopes of keeping the bolts from spinning. I considered using epoxy, or a metal-epoxy mix like JB Weld, but I didn't have enough of either on hand. It seems to be working for now, though the real test won't be until I have to take the vises off.
The decision to be made with respect to the end vise is whether the support plate should be mounted to on the inside or on the outside of the stretcher. Mounting the plate on the inside of the stretcher reduces the reach of the vise - it can't open as far, because the support plate is back from the edge by a couple of inches. But mounting the plate on the outside of the stretcher means that we need to add some support structure for the inner jaw of the vise, which the legs would have provided if we'd mounted the plate on the inside.
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Thanks Chris! I found this page while looking for a link to your e-mail address. I recently finished your erudite volumes on workbench design, and am about to embark on my own bench inspired by your take on the Holtzapffel design. As my vices and planer arrive, I’ve been agonizing over whether to use SYP or rough maple for the top. I don’t have a big budget, so all-maple is not an option. But after reading your ten tips here, I’ll stop agonizing — all SYP it is! This is, after all, my first of what I hope are at least several handmade benches. Your scholarship and craftsmanship are truly inspiring.
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I ended up making a number of practice cuts. The first revealed that I hadn't tightened the screws on the edge guide enough. The second revealed that the design of the edge guide provided very little support at the end of a board, because of the cut-out for the router bit. In the "Getting Started in Woodworking" video, they had screwed a piece of hardwood to the edge-guide, to provide a continuous -- and longer -- bearing surface. I may do that myself, some day, but I didn't have the materials at hand, so I clamped some 2x4 scrap to the end of each board, to provide a continuous bearing surface past the ends. The two grooves in the long stretchers and the side groove in the short stretchers have identical layout. I made practice cuts in scrap until I had the edge guide set correctly, then I cut them all with that one setting. The bottom groove of the short stretchers uses a different setup, so it was back to the scrap, before cutting them.
My woodworking mentor, Robert Van Norman, studied under the esteemed woodworker James Krenov. Robert remembers many of JK’s wise words, especially “trust your eye”. When it was time for me to hear those words, I remember feeling such relief and permission to embrace my inherent perspicacity. Intuition is essential in the design and creation process, and for developing work that reflects the maker beyond his or her technical skill alone. At times, the craftsperson is called on to explain the aesthetics of his design and saying “it just feels right” doesn’t always cut it. This article covers seven common design considerations, their definition and how they are generally accepted and understood. Not only will the article help increase design vocabulary and awareness, but it may also assist in problem solving and recognizing the aesthetic strengths and weaknesses of a furniture piece.
Another aspect that might irk some buyers is the fact that the capacity of this bench is less than great outside of weight. The top’s surface area is a bit on the smaller end, though its length is more in line with larger models. The width though is less than two feet which can limit some projects. Similarly, the vice capacity is the second smallest on our list at 4 ½”, though this too can be modded with optional additions.