To mark the centerline, set a compass to span something more than half the width of the leg. Draw an arc from corner of the leg. The point where the arcs intersect will be on the centerline. With a centerline point on each end of the leg, place a scribe on the point, slide a straightedge up to touch the scribe. Do the same on the other end. When you have the straightedge positioned so that you can touch both points with the scribe, and in each case it is touching the straightedge - without moving the straightedge - scribe the line. Use scribes, rather than pencils or pens, because they make more precise marks.
The top is supported by the top ends of the legs and the top sides of the top stretchers. Stand your legs on end on a flat surface (like my door) and see if they wobble. If you have an end that isn't quite stable, use it as a foot, where the leveler will make it's flaws unimportant. Check the top edge of each stretcher for straightness. If one has a bit of a bow, use it for a lower stretcher. It's less critical that the shelf be well supported along its length.
Ok, I’ve had my morning coffee and now it’s about time to get out to the shop to see what I can do to make that bench a little more pleasing to my eye. I like that Craftsman flair idea. That was my intent at the time I built it, too bad I got lazy and rushed the job. It’s not like I was going to make hundreds of benches for someone else and would never see it again. I should have taken the time to make it the way I wanted it to look. This could keep me entertained for awhile. I see major surgery in the forecast! Gotta plan it all out just right.
So drill the benchdog holes through the MDF layer. Begin by laying out their positions. You'll want these to be precise, so that the distances between the holes are consistent. The vises you are using will constrain your benchdog spacing. My front vise worked most naturally with two rows of holes four inches apart, my end vise with two pairs of rows, with four inches between the rows and eight inches between the pairs. Because of this, I decided on a 4" by 4" pattern.
I drilled from the mark. That way I could ensure that the hole was where it was supposed to be, on the side where the position was critical. I have two 3/8" bits -- a brad point bit that came with my doweling set, and a perfectly ordinary 3/8" twist bit. Brad-point bits are far more precise than twist bits -- they're more likely to start where you want them to, and they're more likely to stay straight. My problem is that my brad-point bit wasn't long enough to go through 3-1/2" of wood. So I started each hole with the brad-point bit, then finished it off with the twist bit. I clamped a piece of ply on the back, to reduce tear-out.
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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.
I made a low table out of a couple of step-stools, my hollow-core door, and one of the MDF panels that would eventually form part of my top. I was concerned that any oil that dripped on the door might interfere with its glue adhesion, when I finally get around to the project for which I'd purchased it. The top side of the top sheet of MDF, though, I planned to oil, anyway. (Ditto for the bottom side of the bottom sheet.
Put the upper panel of MDF on your glue-up surface, bottom side up. Put the bottom panel of MDF on your other surface, bottom side down. (The panel with the holes drilled in it is the bottom panel, and the side that has the your layout diagram on it is the bottom side.) Chuck up in your drill the appropriate driver bit for the screws your using. Make sure you have a freshly-charged battery, and crank the speed down and the torque way down. You don't want to over-tighten the screws, MDF strips easily.
You are absolutely right on your advise. When I was agonizing over how to build a workbench my good friend turned me on to your book on workbenches. I was planning on having an overhang until I read your advise about building a workbench and not a table. So the entire front and rear surfaces; top, legs and bottom shelf are all in the same plane to clamp my work to. The addition of a sliding dead man was also something that I would have never thought of on my own. Thanks again for your advise.
This particular tray is made using reclaimed barn wood but the author of the project Beyond The Picket Fence surprised everyone with one fact: reclaimed barn wood has often some areas turned pink due to cow urine. If you check the project more closely, you’ll also notice some areas of the tray being almost bright pink. That’s something you don’t see every day!
They immediately tried 2 of the projects, and first found that the instructions were a little vague (so many similar sized/shaped pieces - it was difficult to sort them!). The glue included in the kit had separated, and was not usable - but basic wood glue, which we had on hand, worked just fine. The projects turned out great, and, the time spent working on them was priceless!
Even with all of those faults my only regret is that it is too ugly. I didn’t take the time to make it more visually attractive as I was eager to get right into making beautiful furniture instead. Twenty years later the furniture is still beautiful (or not) but I go out to the shop and look at a drab uninspiring workplace. Yeah, nothing wrong with having a visually inspiring workplace in my opinion. All that shop furniture I slapped together years ago with no concern about aesthetics is getting replaced bit by bit. Why should my shop be downright ugly when it is one of my favorite places in the world to spend my time? I see no reason for that, but that’s just my opinion and as we all know everyone has their own one of those… Sadly, no one pays nor reveres me when I offer mine. bummer, I could be a rich egotistical maniac if they did coz I sure offer it enough. 😉
The book is well written and easy to read. The illustrations, I'm sure were excellent in 1914 and, are still adequite now. Most of the designs seemed repetitive, though. I wish more attention had been given to lashing materials. If you are looking for that you will find almost none here. The book was fun to read and provided enough inspiration to make my brother and me attempt a large hut.